Remove vendored dependencies

While it appears that by now we actually can get successful builds
without Cargo insisting on Internet access by virtue of using the
--frozen flag, maintaining vendored dependencies is somewhat of a pain
point. This state will also get worse with upcoming changes that replace
argparse in favor of structopt and pull in a slew of new dependencies by
doing so. Then there is also the repository structure aspect, which is
non-standard due to the way we vendor dependencies and a potential
source of confusion.
In order to fix these problems, this change removes all the vendored
dependencies we have.

Delete subrepo argparse/:argparse
Delete subrepo base32/:base32
Delete subrepo cc/:cc
Delete subrepo cfg-if/:cfg-if
Delete subrepo getrandom/:getrandom
Delete subrepo lazy-static/:lazy-static
Delete subrepo libc/:libc
Delete subrepo nitrokey-sys/:nitrokey-sys
Delete subrepo nitrokey/:nitrokey
Delete subrepo rand/:rand

1 files changed, 0 insertions, 2658 deletions

diff --git a/libc/libc-test/build.rs b/libc/libc-test/build.rs
deleted file mode 100644
index 977ff51..0000000
--- a/libc/libc-test/build.rs
+++ /dev/null
@@ -1,2658 +0,0 @@
-#![deny(warnings)]
-
-extern crate cc;
-extern crate ctest;
-
-use std::env;
-
-fn do_cc() {
-    let target = env::var("TARGET").unwrap();
-    if cfg!(unix) && !target.contains("wasi") {
-        cc::Build::new().file("src/cmsg.c").compile("cmsg");
-    }
-}
-
-fn do_ctest() {
-    match &env::var("TARGET").unwrap() {
-        t if t.contains("android") => return test_android(t),
-        t if t.contains("apple") => return test_apple(t),
-        t if t.contains("cloudabi") => return test_cloudabi(t),
-        t if t.contains("dragonfly") => return test_dragonflybsd(t),
-        t if t.contains("emscripten") => return test_emscripten(t),
-        t if t.contains("freebsd") => return test_freebsd(t),
-        t if t.contains("linux") => return test_linux(t),
-        t if t.contains("netbsd") => return test_netbsd(t),
-        t if t.contains("openbsd") => return test_openbsd(t),
-        t if t.contains("redox") => return test_redox(t),
-        t if t.contains("solaris") => return test_solaris(t),
-        t if t.contains("wasi") => return test_wasi(t),
-        t if t.contains("windows") => return test_windows(t),
-        t if t.contains("vxworks") => return test_vxworks(t),
-        t => panic!("unknown target {}", t),
-    }
-}
-
-fn ctest_cfg() -> ctest::TestGenerator {
-    let mut cfg = ctest::TestGenerator::new();
-    let libc_cfgs = [
-        "libc_priv_mod_use",
-        "libc_union",
-        "libc_const_size_of",
-        "libc_align",
-        "libc_core_cvoid",
-        "libc_packedN",
-        "libc_thread_local",
-    ];
-    for f in &libc_cfgs {
-        cfg.cfg(f, None);
-    }
-    cfg
-}
-
-fn main() {
-    do_cc();
-    do_ctest();
-}
-
-macro_rules! headers {
-    ($cfg:ident: [$m:expr]: $header:literal) => {
-        if $m {
-            $cfg.header($header);
-        }
-    };
-    ($cfg:ident: $header:literal) => {
-        $cfg.header($header);
-    };
-    ($($cfg:ident: $([$c:expr]:)* $header:literal,)*) => {
-        $(headers!($cfg: $([$c]:)* $header);)*
-    };
-    ($cfg:ident: $( $([$c:expr]:)* $header:literal,)*) => {
-        headers!($($cfg: $([$c]:)* $header,)*);
-    };
-    ($cfg:ident: $( $([$c:expr]:)* $header:literal),*) => {
-        headers!($($cfg: $([$c]:)* $header,)*);
-    };
-}
-
-fn test_apple(target: &str) {
-    assert!(target.contains("apple"));
-    let x86_64 = target.contains("x86_64");
-    let i686 = target.contains("i686");
-
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-    cfg.define("__APPLE_USE_RFC_3542", None);
-
-    headers! { cfg:
-        "aio.h",
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "errno.h",
-        "execinfo.h",
-        "fcntl.h",
-        "glob.h",
-        "grp.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "limits.h",
-        "locale.h",
-        "mach-o/dyld.h",
-        "mach/mach_time.h",
-        "malloc/malloc.h",
-        "net/bpf.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/if_dl.h",
-        "net/if_utun.h",
-        "net/route.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/if_ether.h",
-        "netinet/in.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "pthread.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "signal.h",
-        "spawn.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "string.h",
-        "sys/event.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/ipc.h",
-        "sys/kern_control.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/proc_info.h",
-        "sys/ptrace.h",
-        "sys/quota.h",
-        "sys/resource.h",
-        "sys/sem.h",
-        "sys/shm.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/statvfs.h",
-        "sys/sys_domain.h",
-        "sys/sysctl.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "sys/xattr.h",
-        "syslog.h",
-        "termios.h",
-        "time.h",
-        "unistd.h",
-        "util.h",
-        "utime.h",
-        "utmpx.h",
-        "wchar.h",
-        "xlocale.h",
-        [x86_64]: "crt_externs.h",
-    }
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // FIXME: actually a union
-            "sigval" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // These OSX constants are removed in Sierra.
-            // https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOS10_12/Swift/Darwin.html
-            "KERN_KDENABLE_BG_TRACE" | "KERN_KDDISABLE_BG_TRACE" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" => true,
-
-            // close calls the close_nocancel system call
-            "close" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        match (struct_, field) {
-            // FIXME: actually a union
-            ("sigevent", "sigev_value") => true,
-            _ => false,
-        }
-    });
-
-    cfg.volatile_item(|i| {
-        use ctest::VolatileItemKind::*;
-        match i {
-            StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => {
-                true
-            }
-            _ => false,
-        }
-    });
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "DIR" | "Dl_info" => ty.to_string(),
-
-            // OSX calls this something else
-            "sighandler_t" => "sig_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-            t if t.ends_with("_t") => t.to_string(),
-            t if is_struct => format!("struct {}", t),
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", "espec.tv_nsec")
-            }
-            // FIXME: sigaction actually contains a union with two variants:
-            // a sa_sigaction with type: (*)(int, struct __siginfo *, void *)
-            // a sa_handler with type sig_t
-            "sa_sigaction" if struct_ == "sigaction" => {
-                "sa_handler".to_string()
-            }
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_roundtrip(move |s| match s {
-        // FIXME: this type has the wrong ABI
-        "max_align_t" if i686 => true,
-        _ => false,
-    });
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_openbsd(target: &str) {
-    assert!(target.contains("openbsd"));
-
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-
-    headers! { cfg:
-        "errno.h",
-        "fcntl.h",
-        "limits.h",
-        "locale.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "sys/stat.h",
-        "sys/types.h",
-        "time.h",
-        "wchar.h",
-        "ctype.h",
-        "dirent.h",
-        "sys/socket.h",
-        "net/if.h",
-        "net/route.h",
-        "net/if_arp.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "net/bpf.h",
-        "resolv.h",
-        "pthread.h",
-        "dlfcn.h",
-        "signal.h",
-        "string.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/mman.h",
-        "sys/resource.h",
-        "sys/socket.h",
-        "sys/time.h",
-        "sys/un.h",
-        "sys/wait.h",
-        "unistd.h",
-        "utime.h",
-        "pwd.h",
-        "grp.h",
-        "sys/utsname.h",
-        "sys/ptrace.h",
-        "sys/mount.h",
-        "sys/uio.h",
-        "sched.h",
-        "termios.h",
-        "poll.h",
-        "syslog.h",
-        "semaphore.h",
-        "sys/statvfs.h",
-        "sys/times.h",
-        "glob.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "sys/sysctl.h",
-        "utmp.h",
-        "sys/event.h",
-        "net/if_dl.h",
-        "util.h",
-        "ufs/ufs/quota.h",
-        "pthread_np.h",
-        "sys/syscall.h",
-        "sys/shm.h",
-    }
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // FIXME: actually a union
-            "sigval" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // Removed in OpenBSD 6.0
-            "KERN_USERMOUNT" | "KERN_ARND" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" => true,
-
-            // Removed in OpenBSD 6.5
-            // https://marc.info/?l=openbsd-cvs&m=154723400730318
-            "mincore" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "DIR" | "Dl_info" => ty.to_string(),
-
-            // OSX calls this something else
-            "sighandler_t" => "sig_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-            t if t.ends_with("_t") => t.to_string(),
-            t if is_struct => format!("struct {}", t),
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| match field {
-        "st_birthtime" if struct_.starts_with("stat") => {
-            "__st_birthtime".to_string()
-        }
-        "st_birthtime_nsec" if struct_.starts_with("stat") => {
-            "__st_birthtimensec".to_string()
-        }
-        s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-            s.replace("e_nsec", ".tv_nsec")
-        }
-        "sa_sigaction" if struct_ == "sigaction" => "sa_handler".to_string(),
-        s => s.to_string(),
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // type siginfo_t.si_addr changed from OpenBSD 6.0 to 6.1
-        (struct_ == "siginfo_t" && field == "si_addr")
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_windows(target: &str) {
-    assert!(target.contains("windows"));
-    let gnu = target.contains("gnu");
-
-    let mut cfg = ctest_cfg();
-    cfg.define("_WIN32_WINNT", Some("0x8000"));
-
-    headers! { cfg:
-        "direct.h",
-        "errno.h",
-        "fcntl.h",
-        "io.h",
-        "limits.h",
-        "locale.h",
-        "process.h",
-        "signal.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "sys/stat.h",
-        "sys/types.h",
-        "sys/utime.h",
-        "time.h",
-        "wchar.h",
-        [gnu]: "ws2tcpip.h",
-        [!gnu]: "Winsock2.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "DIR" | "Dl_info" => ty.to_string(),
-
-            // FIXME: these don't exist:
-            "time64_t" => "__time64_t".to_string(),
-            "ssize_t" => "SSIZE_T".to_string(),
-
-            "sighandler_t" if !gnu => "_crt_signal_t".to_string(),
-            "sighandler_t" if gnu => "__p_sig_fn_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-            t if t.ends_with("_t") => t.to_string(),
-
-            // Windows uppercase structs don't have `struct` in front:
-            t if is_struct => {
-                if ty.clone().chars().next().unwrap().is_uppercase() {
-                    t.to_string()
-                } else if t == "stat" {
-                    "struct __stat64".to_string()
-                } else if t == "utimbuf" {
-                    "struct __utimbuf64".to_string()
-                } else {
-                    // put `struct` in front of all structs:
-                    format!("struct {}", t)
-                }
-            }
-            t => t.to_string(),
-        }
-    });
-
-    cfg.fn_cname(move |name, cname| cname.unwrap_or(name).to_string());
-
-    cfg.skip_type(move |name| match name {
-        "SSIZE_T" if !gnu => true,
-        "ssize_t" if !gnu => true,
-        _ => false,
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // FIXME: API error:
-            // SIG_ERR type is "void (*)(int)", not "int"
-            "SIG_ERR" => true,
-            _ => false,
-        }
-    });
-
-    // FIXME: All functions point to the wrong addresses?
-    cfg.skip_fn_ptrcheck(|_| true);
-
-    cfg.skip_signededness(move |c| {
-        match c {
-            // windows-isms
-            n if n.starts_with("P") => true,
-            n if n.starts_with("H") => true,
-            n if n.starts_with("LP") => true,
-            "sighandler_t" if gnu => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_redox(target: &str) {
-    assert!(target.contains("redox"));
-
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-
-    headers! {
-        cfg:
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "errno.h",
-        "execinfo.h",
-        "fcntl.h",
-        "glob.h",
-        "grp.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "limits.h",
-        "locale.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "pthread.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "string.h",
-        "strings.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/ptrace.h",
-        "sys/quota.h",
-        "sys/resource.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/statvfs.h",
-        "sys/sysctl.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "syslog.h",
-        "termios.h",
-        "time.h",
-        "unistd.h",
-        "utime.h",
-        "utmpx.h",
-        "wchar.h",
-    }
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_cloudabi(target: &str) {
-    assert!(target.contains("cloudabi"));
-
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-
-    headers! {
-        cfg:
-        "execinfo.h",
-        "glob.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "sys/ptrace.h",
-        "sys/quota.h",
-        "sys/sysctl.h",
-        "utmpx.h",
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "errno.h",
-        "fcntl.h",
-        "grp.h",
-        "limits.h",
-        "locale.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "pthread.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "signal.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "string.h",
-        "strings.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/resource.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/statvfs.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "syslog.h",
-        "termios.h",
-        "time.h",
-        "unistd.h",
-        "utime.h",
-        "wchar.h",
-    }
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_solaris(target: &str) {
-    assert!(target.contains("solaris"));
-
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-
-    cfg.define("_XOPEN_SOURCE", Some("700"));
-    cfg.define("__EXTENSIONS__", None);
-    cfg.define("_LCONV_C99", None);
-
-    headers! {
-        cfg:
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "errno.h",
-        "execinfo.h",
-        "fcntl.h",
-        "glob.h",
-        "grp.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "limits.h",
-        "locale.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "port.h",
-        "pthread.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "signal.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "string.h",
-        "sys/epoll.h",
-        "sys/file.h",
-        "sys/filio.h",
-        "sys/ioctl.h",
-        "sys/loadavg.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/resource.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/statvfs.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "syslog.h",
-        "termios.h",
-        "time.h",
-        "ucontext.h",
-        "unistd.h",
-        "utime.h",
-        "utmpx.h",
-        "wchar.h",
-    }
-
-    cfg.skip_const(move |name| match name {
-        "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" | "DT_LNK"
-        | "DT_SOCK" | "USRQUOTA" | "GRPQUOTA" | "PRIO_MIN" | "PRIO_MAX" => {
-            true
-        }
-
-        _ => false,
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // const-ness only added recently
-            "dladdr" => true,
-
-            // Definition of those functions as changed since unified headers
-            // from NDK r14b These changes imply some API breaking changes but
-            // are still ABI compatible. We can wait for the next major release
-            // to be compliant with the new API.
-            //
-            // FIXME: unskip these for next major release
-            "setpriority" | "personality" => true,
-
-            // signal is defined with sighandler_t, so ignore
-            "signal" => true,
-
-            "cfmakeraw" | "cfsetspeed" => true,
-
-            // FIXME: mincore is defined with caddr_t on Solaris.
-            "mincore" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_netbsd(target: &str) {
-    assert!(target.contains("netbsd"));
-    let rumprun = target.contains("rumprun");
-    let mut cfg = ctest_cfg();
-
-    cfg.flag("-Wno-deprecated-declarations");
-    cfg.define("_NETBSD_SOURCE", Some("1"));
-
-    headers! {
-        cfg:
-        "errno.h",
-        "fcntl.h",
-        "limits.h",
-        "locale.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "sys/stat.h",
-        "sys/types.h",
-        "time.h",
-        "wchar.h",
-        "aio.h",
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "glob.h",
-        "grp.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/if_dl.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "pthread.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "signal.h",
-        "string.h",
-        "sys/extattr.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/ioctl_compat.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/ptrace.h",
-        "sys/resource.h",
-        "sys/socket.h",
-        "sys/statvfs.h",
-        "sys/sysctl.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "syslog.h",
-        "termios.h",
-        "ufs/ufs/quota.h",
-        "ufs/ufs/quota1.h",
-        "unistd.h",
-        "util.h",
-        "utime.h",
-        "mqueue.h",
-        "netinet/dccp.h",
-        "sys/event.h",
-        "sys/quota.h",
-        "sys/shm.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr"
-            | "Elf64_Phdr" | "Elf32_Shdr" | "Elf64_Shdr" | "Elf32_Sym"
-            | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr" | "Elf32_Chdr"
-            | "Elf64_Chdr" => ty.to_string(),
-
-            // OSX calls this something else
-            "sighandler_t" => "sig_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", ".tv_nsec")
-            }
-            "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_type(move |ty| {
-        match ty {
-            // FIXME: sighandler_t is crazy across platforms
-            "sighandler_t" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // This is actually a union, not a struct
-            "sigval" => true,
-            // These are tested as part of the linux_fcntl tests since there are
-            // header conflicts when including them with all the other structs.
-            "termios2" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_signededness(move |c| {
-        match c {
-            "LARGE_INTEGER" | "float" | "double" => true,
-            n if n.starts_with("pthread") => true,
-            // sem_t is a struct or pointer
-            "sem_t" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
-            "SIGUNUSED" => true,                       // removed in glibc 2.26
-
-            // weird signed extension or something like that?
-            "MS_NOUSER" => true,
-            "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
-            "BOTHER" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" => true,
-
-            "getrlimit" | "getrlimit64" |    // non-int in 1st arg
-            "setrlimit" | "setrlimit64" |    // non-int in 1st arg
-            "prlimit" | "prlimit64" |        // non-int in 2nd arg
-
-            // These functions presumably exist on netbsd but don't look like
-            // they're implemented on rumprun yet, just let them slide for now.
-            // Some of them look like they have headers but then don't have
-            // corresponding actual definitions either...
-            "shm_open" |
-            "shm_unlink" |
-            "syscall" |
-            "mq_open" |
-            "mq_close" |
-            "mq_getattr" |
-            "mq_notify" |
-            "mq_receive" |
-            "mq_send" |
-            "mq_setattr" |
-            "mq_timedreceive" |
-            "mq_timedsend" |
-            "mq_unlink" |
-            "ptrace" |
-            "sigaltstack" if rumprun => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // This is a weird union, don't check the type.
-        (struct_ == "ifaddrs" && field == "ifa_ifu") ||
-        // sighandler_t type is super weird
-        (struct_ == "sigaction" && field == "sa_sigaction") ||
-        // sigval is actually a union, but we pretend it's a struct
-        (struct_ == "sigevent" && field == "sigev_value") ||
-        // aio_buf is "volatile void*" and Rust doesn't understand volatile
-        (struct_ == "aiocb" && field == "aio_buf")
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_dragonflybsd(target: &str) {
-    assert!(target.contains("dragonfly"));
-    let mut cfg = ctest_cfg();
-    cfg.flag("-Wno-deprecated-declarations");
-
-    headers! {
-        cfg:
-        "aio.h",
-        "ctype.h",
-        "dirent.h",
-        "dlfcn.h",
-        "errno.h",
-        "execinfo.h",
-        "fcntl.h",
-        "glob.h",
-        "grp.h",
-        "ifaddrs.h",
-        "langinfo.h",
-        "limits.h",
-        "locale.h",
-        "mqueue.h",
-        "net/if.h",
-        "net/if_arp.h",
-        "net/if_dl.h",
-        "net/route.h",
-        "netdb.h",
-        "netinet/in.h",
-        "netinet/ip.h",
-        "netinet/tcp.h",
-        "netinet/udp.h",
-        "poll.h",
-        "pthread.h",
-        "pthread_np.h",
-        "pwd.h",
-        "resolv.h",
-        "sched.h",
-        "semaphore.h",
-        "signal.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "string.h",
-        "sys/event.h",
-        "sys/file.h",
-        "sys/ioctl.h",
-        "sys/mman.h",
-        "sys/mount.h",
-        "sys/ptrace.h",
-        "sys/resource.h",
-        "sys/rtprio.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/statvfs.h",
-        "sys/sysctl.h",
-        "sys/time.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/un.h",
-        "sys/utsname.h",
-        "sys/wait.h",
-        "syslog.h",
-        "termios.h",
-        "time.h",
-        "ufs/ufs/quota.h",
-        "unistd.h",
-        "util.h",
-        "utime.h",
-        "utmpx.h",
-        "wchar.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr"
-            | "Elf64_Phdr" | "Elf32_Shdr" | "Elf64_Shdr" | "Elf32_Sym"
-            | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr" | "Elf32_Chdr"
-            | "Elf64_Chdr" => ty.to_string(),
-
-            // FIXME: OSX calls this something else
-            "sighandler_t" => "sig_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", ".tv_nsec")
-            }
-            "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
-            // Field is named `type` in C but that is a Rust keyword,
-            // so these fields are translated to `type_` in the bindings.
-            "type_" if struct_ == "rtprio" => "type".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_type(move |ty| {
-        match ty {
-            // sighandler_t is crazy across platforms
-            "sighandler_t" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // This is actually a union, not a struct
-            "sigval" => true,
-
-            // FIXME: These are tested as part of the linux_fcntl tests since
-            // there are header conflicts when including them with all the other
-            // structs.
-            "termios2" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_signededness(move |c| {
-        match c {
-            "LARGE_INTEGER" | "float" | "double" => true,
-            // uuid_t is a struct, not an integer.
-            "uuid_t" => true,
-            n if n.starts_with("pthread") => true,
-            // sem_t is a struct or pointer
-            "sem_t" => true,
-            // mqd_t is a pointer on DragonFly
-            "mqd_t" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
-
-            // weird signed extension or something like that?
-            "MS_NOUSER" => true,
-            "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
-
-            // These are defined for Solaris 11, but the crate is tested on
-            // illumos, where they are currently not defined
-            "EADI"
-            | "PORT_SOURCE_POSTWAIT"
-            | "PORT_SOURCE_SIGNAL"
-            | "PTHREAD_STACK_MIN" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" => true,
-
-            "getrlimit" | "getrlimit64" |    // non-int in 1st arg
-            "setrlimit" | "setrlimit64" |    // non-int in 1st arg
-            "prlimit" | "prlimit64"        // non-int in 2nd arg
-             => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // This is a weird union, don't check the type.
-        (struct_ == "ifaddrs" && field == "ifa_ifu") ||
-        // sighandler_t type is super weird
-        (struct_ == "sigaction" && field == "sa_sigaction") ||
-        // sigval is actually a union, but we pretend it's a struct
-        (struct_ == "sigevent" && field == "sigev_value") ||
-        // aio_buf is "volatile void*" and Rust doesn't understand volatile
-        (struct_ == "aiocb" && field == "aio_buf")
-    });
-
-    cfg.skip_field(move |struct_, field| {
-        // this is actually a union on linux, so we can't represent it well and
-        // just insert some padding.
-        (struct_ == "siginfo_t" && field == "_pad") ||
-        // sigev_notify_thread_id is actually part of a sigev_un union
-        (struct_ == "sigevent" && field == "sigev_notify_thread_id")
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_wasi(target: &str) {
-    assert!(target.contains("wasi"));
-
-    let mut cfg = ctest_cfg();
-    cfg.define("_GNU_SOURCE", None);
-
-    headers! { cfg:
-        "ctype.h",
-        "dirent.h",
-        "errno.h",
-        "fcntl.h",
-        "limits.h",
-        "locale.h",
-        "malloc.h",
-        "poll.h",
-        "sched.h",
-        "stdbool.h",
-        "stddef.h",
-        "stdint.h",
-        "stdio.h",
-        "stdlib.h",
-        "string.h",
-        "sys/resource.h",
-        "sys/select.h",
-        "sys/socket.h",
-        "sys/stat.h",
-        "sys/times.h",
-        "sys/types.h",
-        "sys/uio.h",
-        "sys/utsname.h",
-        "time.h",
-        "unistd.h",
-        "wasi/core.h",
-        "wasi/libc.h",
-        "wasi/libc-find-relpath.h",
-        "wchar.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| match ty {
-        "FILE" | "fd_set" | "DIR" => ty.to_string(),
-        t if is_union => format!("union {}", t),
-        t if t.starts_with("__wasi") && t.ends_with("_u") => {
-            format!("union {}", t)
-        }
-        t if t.starts_with("__wasi") && is_struct => format!("struct {}", t),
-        t if t.ends_with("_t") => t.to_string(),
-        t if is_struct => format!("struct {}", t),
-        t => t.to_string(),
-    });
-
-    cfg.field_name(move |_struct, field| {
-        match field {
-            // deal with fields as rust keywords
-            "type_" => "type".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    // Looks like LLD doesn't merge duplicate imports, so if the Rust
-    // code imports from a module and the C code also imports from a
-    // module we end up with two imports of function pointers which
-    // import the same thing but have different function pointers
-    cfg.skip_fn_ptrcheck(|f| f.starts_with("__wasi"));
-
-    // d_name is declared as a flexible array in WASI libc, so it
-    // doesn't support sizeof.
-    cfg.skip_field(|s, field| s == "dirent" && field == "d_name");
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_android(target: &str) {
-    assert!(target.contains("android"));
-    let target_pointer_width = match target {
-        t if t.contains("aarch64") || t.contains("x86_64") => 64,
-        t if t.contains("i686") || t.contains("arm") => 32,
-        t => panic!("unsupported target: {}", t),
-    };
-    let x86 = target.contains("i686") || target.contains("x86_64");
-
-    let mut cfg = ctest_cfg();
-    cfg.define("_GNU_SOURCE", None);
-
-    headers! { cfg:
-               "arpa/inet.h",
-               "asm/mman.h",
-               "ctype.h",
-               "dirent.h",
-               "dlfcn.h",
-               "errno.h",
-               "fcntl.h",
-               "grp.h",
-               "ifaddrs.h",
-               "limits.h",
-               "linux/dccp.h",
-               "linux/futex.h",
-               "linux/fs.h",
-               "linux/genetlink.h",
-               "linux/if_alg.h",
-               "linux/if_ether.h",
-               "linux/if_tun.h",
-               "linux/magic.h",
-               "linux/memfd.h",
-               "linux/module.h",
-               "linux/net_tstamp.h",
-               "linux/netfilter/nfnetlink.h",
-               "linux/netfilter/nfnetlink_log.h",
-               "linux/netfilter/nf_tables.h",
-               "linux/netfilter_ipv4.h",
-               "linux/netfilter_ipv6.h",
-               "linux/netlink.h",
-               "linux/quota.h",
-               "linux/reboot.h",
-               "linux/seccomp.h",
-               "linux/sockios.h",
-               "locale.h",
-               "malloc.h",
-               "net/ethernet.h",
-               "net/if.h",
-               "net/if_arp.h",
-               "net/route.h",
-               "netdb.h",
-               "netinet/in.h",
-               "netinet/ip.h",
-               "netinet/tcp.h",
-               "netinet/udp.h",
-               "netpacket/packet.h",
-               "poll.h",
-               "pthread.h",
-               "pty.h",
-               "pwd.h",
-               "resolv.h",
-               "sched.h",
-               "semaphore.h",
-               "signal.h",
-               "stddef.h",
-               "stdint.h",
-               "stdio.h",
-               "stdlib.h",
-               "string.h",
-               "sys/epoll.h",
-               "sys/eventfd.h",
-               "sys/file.h",
-               "sys/fsuid.h",
-               "sys/inotify.h",
-               "sys/ioctl.h",
-               "sys/mman.h",
-               "sys/mount.h",
-               "sys/personality.h",
-               "sys/prctl.h",
-               "sys/ptrace.h",
-               "sys/random.h",
-               "sys/reboot.h",
-               "sys/resource.h",
-               "sys/sendfile.h",
-               "sys/signalfd.h",
-               "sys/socket.h",
-               "sys/stat.h",
-               "sys/statvfs.h",
-               "sys/swap.h",
-               "sys/syscall.h",
-               "sys/sysinfo.h",
-               "sys/time.h",
-               "sys/times.h",
-               "sys/types.h",
-               "sys/uio.h",
-               "sys/un.h",
-               "sys/utsname.h",
-               "sys/vfs.h",
-               "sys/xattr.h",
-               "sys/wait.h",
-               "syslog.h",
-               "termios.h",
-               "time.h",
-               "unistd.h",
-               "utime.h",
-               "utmp.h",
-               "wchar.h",
-               "xlocale.h",
-               // time64_t is not defined for 64-bit targets If included it will
-               // generate the error 'Your time_t is already 64-bit'
-               [target_pointer_width == 32]: "time64.h",
-               [x86]: "sys/reg.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" => ty.to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // sigval is a struct in Rust, but a union in C:
-            "sigval" => format!("union sigval"),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.to_string()
-            }
-            // FIXME: appears that `epoll_event.data` is an union
-            "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_type(move |ty| {
-        match ty {
-            // FIXME: `sighandler_t` type is incorrect, see:
-            // https://github.com/rust-lang/libc/issues/1359
-            "sighandler_t" => true,
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // These are tested as part of the linux_fcntl tests since there are
-            // header conflicts when including them with all the other structs.
-            "termios2" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // FIXME: deprecated: not available in any header
-            // See: https://github.com/rust-lang/libc/issues/1356
-            "ENOATTR" => true,
-
-            // FIXME: still necessary?
-            "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
-            // FIXME: deprecated - removed in glibc 2.26
-            "SIGUNUSED" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
-
-            // There are two versions of the sterror_r function, see
-            //
-            // https://linux.die.net/man/3/strerror_r
-            //
-            // An XSI-compliant version provided if:
-            //
-            // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && ! _GNU_SOURCE
-            //
-            // and a GNU specific version provided if _GNU_SOURCE is defined.
-            //
-            // libc provides bindings for the XSI-compliant version, which is
-            // preferred for portable applications.
-            //
-            // We skip the test here since here _GNU_SOURCE is defined, and
-            // test the XSI version below.
-            "strerror_r" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // This is a weird union, don't check the type.
-        (struct_ == "ifaddrs" && field == "ifa_ifu") ||
-        // sigval is actually a union, but we pretend it's a struct
-        (struct_ == "sigevent" && field == "sigev_value")
-    });
-
-    cfg.skip_field(move |struct_, field| {
-        // this is actually a union on linux, so we can't represent it well and
-        // just insert some padding.
-        (struct_ == "siginfo_t" && field == "_pad") ||
-        // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
-        // incorrect, see: https://github.com/rust-lang/libc/issues/1359
-        (struct_ == "sigaction" && field == "sa_sigaction") ||
-        // sigev_notify_thread_id is actually part of a sigev_un union
-        (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
-        // signalfd had SIGSYS fields added in Android 4.19, but CI does not have that version yet.
-        (struct_ == "signalfd_siginfo" && (field == "ssi_syscall" ||
-                                           field == "ssi_call_addr" ||
-                                           field == "ssi_arch"))
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-
-    test_linux_like_apis(target);
-}
-
-fn test_freebsd(target: &str) {
-    assert!(target.contains("freebsd"));
-    let mut cfg = ctest_cfg();
-
-    let freebsd_ver = which_freebsd();
-
-    match freebsd_ver {
-        Some(10) => cfg.cfg("freebsd10", None),
-        Some(11) => cfg.cfg("freebsd11", None),
-        Some(12) => cfg.cfg("freebsd12", None),
-        Some(13) => cfg.cfg("freebsd13", None),
-        _ => &mut cfg,
-    };
-
-    // Required for `getline`:
-    cfg.define("_WITH_GETLINE", None);
-    // Required for making freebsd11_stat available in the headers
-    match freebsd_ver {
-        Some(10) => &mut cfg,
-        _ => cfg.define("_WANT_FREEBSD11_STAT", None),
-    };
-
-    headers! { cfg:
-                "aio.h",
-                "arpa/inet.h",
-                "ctype.h",
-                "dirent.h",
-                "dlfcn.h",
-                "errno.h",
-                "fcntl.h",
-                "glob.h",
-                "grp.h",
-                "ifaddrs.h",
-                "langinfo.h",
-                "libutil.h",
-                "limits.h",
-                "locale.h",
-                "mqueue.h",
-                "net/bpf.h",
-                "net/if.h",
-                "net/if_arp.h",
-                "net/if_dl.h",
-                "net/route.h",
-                "netdb.h",
-                "netinet/ip.h",
-                "netinet/in.h",
-                "netinet/tcp.h",
-                "netinet/udp.h",
-                "poll.h",
-                "pthread.h",
-                "pthread_np.h",
-                "pwd.h",
-                "resolv.h",
-                "sched.h",
-                "semaphore.h",
-                "signal.h",
-                "spawn.h",
-                "stddef.h",
-                "stdint.h",
-                "stdio.h",
-                "stdlib.h",
-                "string.h",
-                "sys/event.h",
-                "sys/extattr.h",
-                "sys/file.h",
-                "sys/ioctl.h",
-                "sys/ipc.h",
-                "sys/jail.h",
-                "sys/mman.h",
-                "sys/mount.h",
-                "sys/msg.h",
-                "sys/procdesc.h",
-                "sys/ptrace.h",
-                "sys/resource.h",
-                "sys/rtprio.h",
-                "sys/shm.h",
-                "sys/socket.h",
-                "sys/stat.h",
-                "sys/statvfs.h",
-                "sys/sysctl.h",
-                "sys/time.h",
-                "sys/times.h",
-                "sys/types.h",
-                "sys/uio.h",
-                "sys/un.h",
-                "sys/utsname.h",
-                "sys/wait.h",
-                "syslog.h",
-                "termios.h",
-                "time.h",
-                "ufs/ufs/quota.h",
-                "unistd.h",
-                "utime.h",
-                "utmpx.h",
-                "wchar.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" | "DIR" => ty.to_string(),
-
-            // FIXME: https://github.com/rust-lang/libc/issues/1273
-            "sighandler_t" => "sig_t".to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // sigval is a struct in Rust, but a union in C:
-            "sigval" => format!("union sigval"),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", ".tv_nsec")
-            }
-            // Field is named `type` in C but that is a Rust keyword,
-            // so these fields are translated to `type_` in the bindings.
-            "type_" if struct_ == "rtprio" => "type".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // These constants were introduced in FreeBSD 12:
-            "SF_USER_READAHEAD"
-            | "EVFILT_EMPTY"
-            | "SO_REUSEPORT_LB"
-            | "IP_ORIGDSTADDR"
-            | "IP_RECVORIGDSTADDR"
-            | "IPV6_ORIGDSTADDR"
-            | "IPV6_RECVORIGDSTADDR"
-                if Some(11) == freebsd_ver =>
-            {
-                true
-            }
-
-            // These constants were introduced in FreeBSD 11:
-            "SF_USER_READAHEAD"
-            | "SF_NOCACHE"
-            | "RLIMIT_KQUEUES"
-            | "RLIMIT_UMTXP"
-            | "EVFILT_PROCDESC"
-            | "EVFILT_SENDFILE"
-            | "EVFILT_EMPTY"
-            | "SO_REUSEPORT_LB"
-            | "TCP_CCALGOOPT"
-            | "TCP_PCAP_OUT"
-            | "TCP_PCAP_IN"
-            | "IP_BINDMULTI"
-            | "IP_ORIGDSTADDR"
-            | "IP_RECVORIGDSTADDR"
-            | "IPV6_ORIGDSTADDR"
-            | "IPV6_RECVORIGDSTADDR"
-            | "PD_CLOEXEC"
-            | "PD_ALLOWED_AT_FORK"
-            | "IP_RSS_LISTEN_BUCKET"
-                if Some(10) == freebsd_ver =>
-            {
-                true
-            }
-
-            // FIXME: This constant has a different value in FreeBSD 10:
-            "RLIM_NLIMITS" if Some(10) == freebsd_ver => true,
-
-            // FIXME: There are deprecated - remove in a couple of releases.
-            // These constants were removed in FreeBSD 11 (svn r273250) but will
-            // still be accepted and ignored at runtime.
-            "MAP_RENAME" | "MAP_NORESERVE" if Some(10) != freebsd_ver => true,
-
-            // FIXME: There are deprecated - remove in a couple of releases.
-            // These constants were removed in FreeBSD 11 (svn r262489),
-            // and they've never had any legitimate use outside of the
-            // base system anyway.
-            "CTL_MAXID" | "KERN_MAXID" | "HW_MAXID" | "USER_MAXID" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // `mmsghdr` is not available in FreeBSD 10
-            "mmsghdr" if Some(10) == freebsd_ver => true,
-
-            // `max_align_t` is not available in FreeBSD 10
-            "max_align_t" if Some(10) == freebsd_ver => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
-
-            // These functions were added in FreeBSD 11:
-            "fdatasync" | "mq_getfd_np" | "sendmmsg" | "recvmmsg"
-                if Some(10) == freebsd_ver =>
-            {
-                true
-            }
-
-            // This function changed its return type from `int` in FreeBSD10 to
-            // `ssize_t` in FreeBSD11:
-            "aio_waitcomplete" if Some(10) == freebsd_ver => true,
-
-            // The `uname` function in the `utsname.h` FreeBSD header is a C
-            // inline function (has no symbol) that calls the `__xuname` symbol.
-            // Therefore the function pointer comparison does not make sense for it.
-            "uname" => true,
-
-            // FIXME: Our API is unsound. The Rust API allows aliasing
-            // pointers, but the C API requires pointers not to alias.
-            // We should probably be at least using `&`/`&mut` here, see:
-            // https://github.com/gnzlbg/ctest/issues/68
-            "lio_listio" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_signededness(move |c| {
-        match c {
-            // FIXME: has a different sign in FreeBSD10
-            "blksize_t" if Some(10) == freebsd_ver => true,
-            _ => false,
-        }
-    });
-
-    cfg.volatile_item(|i| {
-        use ctest::VolatileItemKind::*;
-        match i {
-            // aio_buf is a volatile void** but since we cannot express that in
-            // Rust types, we have to explicitly tell the checker about it here:
-            StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => {
-                true
-            }
-            _ => false,
-        }
-    });
-
-    cfg.skip_field(move |struct_, field| {
-        match (struct_, field) {
-            // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
-            // incorrect, see: https://github.com/rust-lang/libc/issues/1359
-            ("sigaction", "sa_sigaction") => true,
-
-            // FIXME: in FreeBSD10 this field has type `char*` instead of
-            // `void*`:
-            ("stack_t", "ss_sp") if Some(10) == freebsd_ver => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_emscripten(target: &str) {
-    assert!(target.contains("emscripten"));
-
-    let mut cfg = ctest_cfg();
-    cfg.define("_GNU_SOURCE", None); // FIXME: ??
-
-    headers! { cfg:
-               "aio.h",
-               "ctype.h",
-               "dirent.h",
-               "dlfcn.h",
-               "errno.h",
-               "fcntl.h",
-               "glob.h",
-               "grp.h",
-               "ifaddrs.h",
-               "langinfo.h",
-               "limits.h",
-               "locale.h",
-               "malloc.h",
-               "mntent.h",
-               "mqueue.h",
-               "net/ethernet.h",
-               "net/if.h",
-               "net/if_arp.h",
-               "net/route.h",
-               "netdb.h",
-               "netinet/in.h",
-               "netinet/ip.h",
-               "netinet/tcp.h",
-               "netinet/udp.h",
-               "netpacket/packet.h",
-               "poll.h",
-               "pthread.h",
-               "pty.h",
-               "pwd.h",
-               "resolv.h",
-               "sched.h",
-               "sched.h",
-               "semaphore.h",
-               "shadow.h",
-               "signal.h",
-               "stddef.h",
-               "stdint.h",
-               "stdio.h",
-               "stdlib.h",
-               "string.h",
-               "sys/epoll.h",
-               "sys/eventfd.h",
-               "sys/file.h",
-               "sys/ioctl.h",
-               "sys/ipc.h",
-               "sys/mman.h",
-               "sys/mount.h",
-               "sys/msg.h",
-               "sys/personality.h",
-               "sys/prctl.h",
-               "sys/ptrace.h",
-               "sys/quota.h",
-               "sys/reboot.h",
-               "sys/resource.h",
-               "sys/sem.h",
-               "sys/sendfile.h",
-               "sys/shm.h",
-               "sys/signalfd.h",
-               "sys/socket.h",
-               "sys/stat.h",
-               "sys/statvfs.h",
-               "sys/swap.h",
-               "sys/syscall.h",
-               "sys/sysctl.h",
-               "sys/sysinfo.h",
-               "sys/time.h",
-               "sys/timerfd.h",
-               "sys/times.h",
-               "sys/types.h",
-               "sys/uio.h",
-               "sys/un.h",
-               "sys/user.h",
-               "sys/utsname.h",
-               "sys/vfs.h",
-               "sys/wait.h",
-               "sys/xattr.h",
-               "syslog.h",
-               "termios.h",
-               "time.h",
-               "ucontext.h",
-               "unistd.h",
-               "utime.h",
-               "utmp.h",
-               "utmpx.h",
-               "wchar.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" | "DIR" => ty.to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", ".tv_nsec")
-            }
-            // FIXME: appears that `epoll_event.data` is an union
-            "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_type(move |ty| {
-        match ty {
-            // sighandler_t is crazy across platforms
-            // FIXME: is this necessary?
-            "sighandler_t" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // This is actually a union, not a struct
-            // FIXME: is this necessary?
-            "sigval" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // FIXME: deprecated - SIGNUNUSED was removed in glibc 2.26
-            // users should use SIGSYS instead
-            "SIGUNUSED" => true,
-
-            // FIXME: emscripten uses different constants to constructs these
-            n if n.contains("__SIZEOF_PTHREAD") => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // This is a weird union, don't check the type.
-        // FIXME: is this necessary?
-        (struct_ == "ifaddrs" && field == "ifa_ifu") ||
-        // sighandler_t type is super weird
-        // FIXME: is this necessary?
-        (struct_ == "sigaction" && field == "sa_sigaction") ||
-        // sigval is actually a union, but we pretend it's a struct
-        // FIXME: is this necessary?
-        (struct_ == "sigevent" && field == "sigev_value") ||
-        // aio_buf is "volatile void*" and Rust doesn't understand volatile
-        // FIXME: is this necessary?
-        (struct_ == "aiocb" && field == "aio_buf")
-    });
-
-    cfg.skip_field(move |struct_, field| {
-        // this is actually a union on linux, so we can't represent it well and
-        // just insert some padding.
-        // FIXME: is this necessary?
-        (struct_ == "siginfo_t" && field == "_pad") ||
-        // musl names this __dummy1 but it's still there
-        // FIXME: is this necessary?
-        (struct_ == "glob_t" && field == "gl_flags") ||
-        // musl seems to define this as an *anonymous* bitfield
-        // FIXME: is this necessary?
-        (struct_ == "statvfs" && field == "__f_unused") ||
-        // sigev_notify_thread_id is actually part of a sigev_un union
-        (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
-        // signalfd had SIGSYS fields added in Linux 4.18, but no libc release has them yet.
-        (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
-                                           field == "_pad2" ||
-                                           field == "ssi_syscall" ||
-                                           field == "ssi_call_addr" ||
-                                           field == "ssi_arch"))
-    });
-
-    // FIXME: test linux like
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_vxworks(target: &str) {
-    assert!(target.contains("vxworks"));
-
-    let mut cfg = ctest::TestGenerator::new();
-    headers! { cfg:
-               "vxWorks.h",
-               "yvals.h",
-               "nfs/nfsCommon.h",
-               "rtpLibCommon.h",
-               "randomNumGen.h",
-               "taskLib.h",
-               "sysLib.h",
-               "ioLib.h",
-               "inetLib.h",
-               "socket.h",
-               "errnoLib.h",
-               "ctype.h",
-               "dirent.h",
-               "dlfcn.h",
-               "elf.h",
-               "fcntl.h",
-               "grp.h",
-               "sys/poll.h",
-               "ifaddrs.h",
-               "langinfo.h",
-               "limits.h",
-               "link.h",
-               "locale.h",
-               "sys/stat.h",
-               "netdb.h",
-               "pthread.h",
-               "pwd.h",
-               "sched.h",
-               "semaphore.h",
-               "signal.h",
-               "stddef.h",
-               "stdint.h",
-               "stdio.h",
-               "stdlib.h",
-               "string.h",
-               "sys/file.h",
-               "sys/ioctl.h",
-               "sys/socket.h",
-               "sys/time.h",
-               "sys/times.h",
-               "sys/types.h",
-               "sys/uio.h",
-               "sys/un.h",
-               "sys/utsname.h",
-               "sys/wait.h",
-               "netinet/tcp.h",
-               "syslog.h",
-               "termios.h",
-               "time.h",
-               "ucontext.h",
-               "unistd.h",
-               "utime.h",
-               "wchar.h",
-               "errno.h",
-               "sys/mman.h",
-               "pathLib.h",
-    }
-    /* Fix me */
-    cfg.skip_const(move |name| match name {
-        // sighandler_t weirdness
-        "SIG_DFL" | "SIG_ERR" | "SIG_IGN"
-        // This is not defined in vxWorks
-        | "RTLD_DEFAULT"   => true,
-        _ => false,
-    });
-    /* Fix me */
-    cfg.skip_type(move |ty| match ty {
-        "stat64" | "sighandler_t" | "off64_t" => true,
-        _ => false,
-    });
-
-    cfg.skip_field_type(move |struct_, field| match (struct_, field) {
-        ("siginfo_t", "si_value")
-        | ("stat", "st_size")
-        | ("sigaction", "sa_u") => true,
-        _ => false,
-    });
-
-    cfg.skip_roundtrip(move |s| match s {
-        _ => false,
-    });
-
-    cfg.type_name(move |ty, is_struct, is_union| match ty {
-        "DIR" | "FILE" | "Dl_info" | "RTP_DESC" => ty.to_string(),
-        t if is_union => format!("union {}", t),
-        t if t.ends_with("_t") => t.to_string(),
-        t if is_struct => format!("struct {}", t),
-        t => t.to_string(),
-    });
-
-    /* Fix me */
-    cfg.skip_fn(move |name| match name {
-        /* sigval */
-        "sigqueue" | "_sigqueue"
-        /* sighandler_t*/
-        | "signal"
-        /* not used in static linking by default */
-        | "dlerror" => true,
-        _ => false,
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-}
-
-fn test_linux(target: &str) {
-    assert!(target.contains("linux"));
-
-    // target_env
-    let gnu = target.contains("gnu");
-    let musl = target.contains("musl");
-    let uclibc = target.contains("uclibc");
-
-    match (gnu, musl, uclibc) {
-        (true, false, false) => (),
-        (false, true, false) => (),
-        (false, false, true) => (),
-        (_, _, _) => panic!(
-            "linux target lib is gnu: {}, musl: {}, uclibc: {}",
-            gnu, musl, uclibc
-        ),
-    }
-
-    let arm = target.contains("arm");
-    let i686 = target.contains("i686");
-    let mips = target.contains("mips");
-    let mips32 = mips && !target.contains("64");
-    let mips64 = mips && target.contains("64");
-    let ppc64 = target.contains("powerpc64");
-    let s390x = target.contains("s390x");
-    let sparc64 = target.contains("sparc64");
-    let x32 = target.contains("x32");
-    let x86_32 = target.contains("i686");
-    let x86_64 = target.contains("x86_64");
-    let aarch64_musl = target.contains("aarch64") && musl;
-
-    let mut cfg = ctest_cfg();
-    cfg.define("_GNU_SOURCE", None);
-    // This macro re-deifnes fscanf,scanf,sscanf to link to the symbols that are
-    // deprecated since glibc >= 2.29. This allows Rust binaries to link against
-    // glibc versions older than 2.29.
-    cfg.define("__GLIBC_USE_DEPRECATED_SCANF", None);
-
-    headers! { cfg:
-               "ctype.h",
-               "dirent.h",
-               "dlfcn.h",
-               "elf.h",
-               "fcntl.h",
-               "glob.h",
-               "grp.h",
-               "ifaddrs.h",
-               "langinfo.h",
-               "limits.h",
-               "link.h",
-               "locale.h",
-               "malloc.h",
-               "mntent.h",
-               "mqueue.h",
-               "net/ethernet.h",
-               "net/if.h",
-               "net/if_arp.h",
-               "net/route.h",
-               "netdb.h",
-               "netinet/in.h",
-               "netinet/ip.h",
-               "netinet/tcp.h",
-               "netinet/udp.h",
-               "netpacket/packet.h",
-               "poll.h",
-               "pthread.h",
-               "pty.h",
-               "pwd.h",
-               "resolv.h",
-               "sched.h",
-               "semaphore.h",
-               "shadow.h",
-               "signal.h",
-               "spawn.h",
-               "stddef.h",
-               "stdint.h",
-               "stdio.h",
-               "stdlib.h",
-               "string.h",
-               "sys/epoll.h",
-               "sys/eventfd.h",
-               "sys/file.h",
-               "sys/fsuid.h",
-               "sys/inotify.h",
-               "sys/ioctl.h",
-               "sys/ipc.h",
-               "sys/mman.h",
-               "sys/mount.h",
-               "sys/msg.h",
-               "sys/personality.h",
-               "sys/prctl.h",
-               "sys/ptrace.h",
-               "sys/quota.h",
-               "sys/random.h",
-               "sys/reboot.h",
-               "sys/resource.h",
-               "sys/sem.h",
-               "sys/sendfile.h",
-               "sys/shm.h",
-               "sys/signalfd.h",
-               "sys/socket.h",
-               "sys/stat.h",
-               "sys/statvfs.h",
-               "sys/swap.h",
-               "sys/syscall.h",
-               "sys/time.h",
-               "sys/timerfd.h",
-               "sys/times.h",
-               "sys/types.h",
-               "sys/uio.h",
-               "sys/un.h",
-               "sys/user.h",
-               "sys/utsname.h",
-               "sys/vfs.h",
-               "sys/wait.h",
-               "syslog.h",
-               "termios.h",
-               "time.h",
-               "ucontext.h",
-               "unistd.h",
-               "utime.h",
-               "utmp.h",
-               "utmpx.h",
-               "wchar.h",
-               "errno.h",
-               // `sys/io.h` is only available on x86*, Alpha, IA64, and 32-bit
-               // ARM: https://bugzilla.redhat.com/show_bug.cgi?id=1116162
-               [x86_64 || x86_32 || arm]: "sys/io.h",
-               // `sys/reg.h` is only available on x86 and x86_64
-               [x86_64 || x86_32]: "sys/reg.h",
-               // sysctl system call is deprecated and not available on musl
-               // It is also unsupported in x32:
-               [!(x32 || musl)]: "sys/sysctl.h",
-               // <execinfo.h> is not supported by musl:
-               // https://www.openwall.com/lists/musl/2015/04/09/3
-               [!musl]: "execinfo.h",
-    }
-
-    // Include linux headers at the end:
-    headers! {
-        cfg:
-        "asm/mman.h",
-        "linux/dccp.h",
-        "linux/falloc.h",
-        "linux/fs.h",
-        "linux/futex.h",
-        "linux/genetlink.h",
-        "linux/if.h",
-        "linux/if_addr.h",
-        "linux/if_alg.h",
-        "linux/if_ether.h",
-        "linux/if_tun.h",
-        "linux/input.h",
-        "linux/magic.h",
-        "linux/memfd.h",
-        "linux/module.h",
-        "linux/net_tstamp.h",
-        "linux/netfilter/nfnetlink.h",
-        "linux/netfilter/nfnetlink_log.h",
-        "linux/netfilter/nf_tables.h",
-        "linux/netfilter_ipv4.h",
-        "linux/netfilter_ipv6.h",
-        "linux/netlink.h",
-        "linux/quota.h",
-        "linux/random.h",
-        "linux/reboot.h",
-        "linux/rtnetlink.h",
-        "linux/seccomp.h",
-        "linux/sockios.h",
-        "linux/vm_sockets.h",
-        "sys/auxv.h",
-    }
-
-    // note: aio.h must be included before sys/mount.h
-    headers! {
-        cfg:
-        "sys/xattr.h",
-        "sys/sysinfo.h",
-        "aio.h",
-    }
-
-    cfg.type_name(move |ty, is_struct, is_union| {
-        match ty {
-            // Just pass all these through, no need for a "struct" prefix
-            "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr"
-            | "Elf64_Phdr" | "Elf32_Shdr" | "Elf64_Shdr" | "Elf32_Sym"
-            | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr" | "Elf32_Chdr"
-            | "Elf64_Chdr" => ty.to_string(),
-
-            t if is_union => format!("union {}", t),
-
-            t if t.ends_with("_t") => t.to_string(),
-
-            // In MUSL `flock64` is a typedef to `flock`.
-            "flock64" if musl => format!("struct {}", ty),
-
-            // put `struct` in front of all structs:.
-            t if is_struct => format!("struct {}", t),
-
-            t => t.to_string(),
-        }
-    });
-
-    cfg.field_name(move |struct_, field| {
-        match field {
-            // Our stat *_nsec fields normally don't actually exist but are part
-            // of a timeval struct
-            s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
-                s.replace("e_nsec", ".tv_nsec")
-            }
-            // FIXME: epoll_event.data is actuall a union in C, but in Rust
-            // it is only a u64 because we only expose one field
-            // http://man7.org/linux/man-pages/man2/epoll_wait.2.html
-            "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
-            // The following structs have a field called `type` in C,
-            // but `type` is a Rust keyword, so these fields are translated
-            // to `type_` in Rust.
-            "type_"
-                if struct_ == "input_event"
-                    || struct_ == "input_mask"
-                    || struct_ == "ff_effect" =>
-            {
-                "type".to_string()
-            }
-
-            s => s.to_string(),
-        }
-    });
-
-    cfg.skip_type(move |ty| {
-        match ty {
-            // FIXME: `sighandler_t` type is incorrect, see:
-            // https://github.com/rust-lang/libc/issues/1359
-            "sighandler_t" => true,
-
-            // These cannot be tested when "resolv.h" is included and are tested
-            // in the `linux_elf.rs` file.
-            "Elf64_Phdr" | "Elf32_Phdr" => true,
-
-            // This type is private on Linux. It is implemented as a C `enum`
-            // (`c_uint`) and this clashes with the type of the `rlimit` APIs
-            // which expect a `c_int` even though both are ABI compatible.
-            "__rlimit_resource_t" => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_struct(move |ty| {
-        match ty {
-            // These cannot be tested when "resolv.h" is included and are tested
-            // in the `linux_elf.rs` file.
-            "Elf64_Phdr" | "Elf32_Phdr" => true,
-
-            // On Linux, the type of `ut_tv` field of `struct utmpx`
-            // can be an anonymous struct, so an extra struct,
-            // which is absent in glibc, has to be defined.
-            "__timeval" => true,
-
-            // FIXME: This is actually a union, not a struct
-            "sigval" => true,
-
-            // This type is tested in the `linux_termios.rs` file since there
-            // are header conflicts when including them with all the other
-            // structs.
-            "termios2" => true,
-
-            // FIXME: remove once Ubuntu 20.04 LTS is released, somewhere in 2020.
-            // ucontext_t added a new field as of glibc 2.28; our struct definition is
-            // conservative and omits the field, but that means the size doesn't match for newer
-            // glibcs (see https://github.com/rust-lang/libc/issues/1410)
-            "ucontext_t" if gnu => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_const(move |name| {
-        match name {
-            // These constants are not available if gnu headers have been included
-            // and can therefore not be tested here
-            //
-            // The IPV6 constants are tested in the `linux_ipv6.rs` tests:
-            | "IPV6_FLOWINFO"
-            | "IPV6_FLOWLABEL_MGR"
-            | "IPV6_FLOWINFO_SEND"
-            | "IPV6_FLOWINFO_FLOWLABEL"
-            | "IPV6_FLOWINFO_PRIORITY"
-            // The F_ fnctl constants are tested in the `linux_fnctl.rs` tests:
-            | "F_CANCELLK"
-            | "F_ADD_SEALS"
-            | "F_GET_SEALS"
-            | "F_SEAL_SEAL"
-            | "F_SEAL_SHRINK"
-            | "F_SEAL_GROW"
-            | "F_SEAL_WRITE" => true,
-
-            // The musl-sanitized kernel headers used in CI
-            // target the Linux kernel 4.4 and do not contain the
-            // following constants:
-            //
-            // Requires Linux kernel 4.9
-            | "FALLOC_FL_UNSHARE_RANGE"
-            //
-            // Require Linux kernel 5.x:
-            | "MSG_COPY"
-               if musl  => true,
-            // Require Linux kernel 5.1:
-            "F_SEAL_FUTURE_WRITE" => true,
-
-            // The musl version 1.1.24 used in CI does not
-            // contain these glibc constants yet:
-            | "RLIMIT_RTTIME" // should be in `resource.h`
-            | "TCP_COOKIE_TRANSACTIONS"  // should be in the `netinet/tcp.h` header
-                if musl => true,
-
-            // FIXME: deprecated: not available in any header
-            // See: https://github.com/rust-lang/libc/issues/1356
-            "ENOATTR" => true,
-
-            // FIXME: SIGUNUSED was removed in glibc 2.26
-            // Users should use SIGSYS instead.
-            "SIGUNUSED" => true,
-
-            // FIXME: conflicts with glibc headers and is tested in
-            // `linux_termios.rs` below:
-            "BOTHER" => true,
-
-            // FIXME: on musl the pthread types are defined a little differently
-            // - these constants are used by the glibc implementation.
-            n if musl && n.contains("__SIZEOF_PTHREAD") => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_fn(move |name| {
-        // skip those that are manually verified
-        match name {
-            // FIXME: https://github.com/rust-lang/libc/issues/1272
-            "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
-
-            // There are two versions of the sterror_r function, see
-            //
-            // https://linux.die.net/man/3/strerror_r
-            //
-            // An XSI-compliant version provided if:
-            //
-            // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
-            //  && ! _GNU_SOURCE
-            //
-            // and a GNU specific version provided if _GNU_SOURCE is defined.
-            //
-            // libc provides bindings for the XSI-compliant version, which is
-            // preferred for portable applications.
-            //
-            // We skip the test here since here _GNU_SOURCE is defined, and
-            // test the XSI version below.
-            "strerror_r" => true,
-
-            // FIXME: Our API is unsound. The Rust API allows aliasing
-            // pointers, but the C API requires pointers not to alias.
-            // We should probably be at least using `&`/`&mut` here, see:
-            // https://github.com/gnzlbg/ctest/issues/68
-            "lio_listio" if musl => true,
-
-            // FIXME: the glibc version used by the Sparc64 build jobs
-            // which use Debian 10.0 is too old.
-            "statx" if sparc64 => true,
-
-            _ => false,
-        }
-    });
-
-    cfg.skip_field_type(move |struct_, field| {
-        // This is a weird union, don't check the type.
-        (struct_ == "ifaddrs" && field == "ifa_ifu") ||
-        // sighandler_t type is super weird
-        (struct_ == "sigaction" && field == "sa_sigaction") ||
-        // __timeval type is a patch which doesn't exist in glibc
-        (struct_ == "utmpx" && field == "ut_tv") ||
-        // sigval is actually a union, but we pretend it's a struct
-        (struct_ == "sigevent" && field == "sigev_value") ||
-        // this one is an anonymous union
-        (struct_ == "ff_effect" && field == "u")
-    });
-
-    cfg.volatile_item(|i| {
-        use ctest::VolatileItemKind::*;
-        match i {
-            // aio_buf is a volatile void** but since we cannot express that in
-            // Rust types, we have to explicitly tell the checker about it here:
-            StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => {
-                true
-            }
-            _ => false,
-        }
-    });
-
-    cfg.skip_field(move |struct_, field| {
-        // this is actually a union on linux, so we can't represent it well and
-        // just insert some padding.
-        (struct_ == "siginfo_t" && field == "_pad") ||
-        // musl names this __dummy1 but it's still there
-        (musl && struct_ == "glob_t" && field == "gl_flags") ||
-        // musl seems to define this as an *anonymous* bitfield
-        (musl && struct_ == "statvfs" && field == "__f_unused") ||
-        // sigev_notify_thread_id is actually part of a sigev_un union
-        (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
-        // signalfd had SIGSYS fields added in Linux 4.18, but no libc release
-        // has them yet.
-        (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
-                                           field == "_pad2" ||
-                                           field == "ssi_syscall" ||
-                                           field == "ssi_call_addr" ||
-                                           field == "ssi_arch")) ||
-        // FIXME: After musl 1.1.24, it have only one field `sched_priority`,
-        // while other fields become reserved.
-        (struct_ == "sched_param" && [
-            "sched_ss_low_priority",
-            "sched_ss_repl_period",
-            "sched_ss_init_budget",
-            "sched_ss_max_repl",
-        ].contains(&field) && musl) ||
-        // FIXME: After musl 1.1.24, the type becomes `int` instead of `unsigned short`.
-        (struct_ == "ipc_perm" && field == "__seq" && aarch64_musl)
-    });
-
-    cfg.skip_roundtrip(move |s| match s {
-        // FIXME:
-        "utsname" if mips32 || mips64 => true,
-        // FIXME:
-        "mcontext_t" if s390x => true,
-
-        "sockaddr_un" | "sembuf" | "ff_constant_effect"
-            if mips32 && (gnu || musl) =>
-        {
-            true
-        }
-        "ipv6_mreq"
-        | "ip_mreq_source"
-        | "sockaddr_in6"
-        | "sockaddr_ll"
-        | "in_pktinfo"
-        | "arpreq"
-        | "arpreq_old"
-        | "sockaddr_un"
-        | "ff_constant_effect"
-        | "ff_ramp_effect"
-        | "ff_condition_effect"
-        | "Elf32_Ehdr"
-        | "Elf32_Chdr"
-        | "ucred"
-        | "in6_pktinfo"
-        | "sockaddr_nl"
-        | "termios"
-        | "nlmsgerr"
-            if (mips64 || sparc64) && gnu =>
-        {
-            true
-        }
-
-        // FIXME: the call ABI of max_align_t is incorrect on these platforms:
-        "max_align_t" if i686 || mips64 || ppc64 => true,
-
-        _ => false,
-    });
-
-    cfg.generate("../src/lib.rs", "main.rs");
-
-    test_linux_like_apis(target);
-}
-
-// This function tests APIs that are incompatible to test when other APIs
-// are included (e.g. because including both sets of headers clashes)
-fn test_linux_like_apis(target: &str) {
-    let musl = target.contains("musl");
-    let linux = target.contains("linux");
-    let emscripten = target.contains("emscripten");
-    let android = target.contains("android");
-    assert!(linux || android || emscripten);
-
-    if linux || android || emscripten {
-        // test strerror_r from the `string.h` header
-        let mut cfg = ctest_cfg();
-        cfg.skip_type(|_| true).skip_static(|_| true);
-
-        headers! { cfg: "string.h" }
-        cfg.skip_fn(|f| match f {
-            "strerror_r" => false,
-            _ => true,
-        })
-        .skip_const(|_| true)
-        .skip_struct(|_| true);
-        cfg.generate("../src/lib.rs", "linux_strerror_r.rs");
-    }
-
-    if linux || android || emscripten {
-        // test fcntl - see:
-        // http://man7.org/linux/man-pages/man2/fcntl.2.html
-        let mut cfg = ctest_cfg();
-
-        if musl {
-            cfg.header("fcntl.h");
-        } else {
-            cfg.header("linux/fcntl.h");
-        }
-
-        cfg.skip_type(|_| true)
-            .skip_static(|_| true)
-            .skip_struct(|_| true)
-            .skip_fn(|_| true)
-            .skip_const(move |name| match name {
-                // test fcntl constants:
-                "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS"
-                | "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW"
-                | "F_SEAL_WRITE" => false,
-                _ => true,
-            })
-            .type_name(move |ty, is_struct, is_union| match ty {
-                t if is_struct => format!("struct {}", t),
-                t if is_union => format!("union {}", t),
-                t => t.to_string(),
-            });
-
-        cfg.generate("../src/lib.rs", "linux_fcntl.rs");
-    }
-
-    if linux || android {
-        // test termios
-        let mut cfg = ctest_cfg();
-        cfg.header("asm/termbits.h");
-        cfg.skip_type(|_| true)
-            .skip_static(|_| true)
-            .skip_fn(|_| true)
-            .skip_const(|c| c != "BOTHER")
-            .skip_struct(|s| s != "termios2")
-            .type_name(move |ty, is_struct, is_union| match ty {
-                t if is_struct => format!("struct {}", t),
-                t if is_union => format!("union {}", t),
-                t => t.to_string(),
-            });
-        cfg.generate("../src/lib.rs", "linux_termios.rs");
-    }
-
-    if linux || android {
-        // test IPV6_ constants:
-        let mut cfg = ctest_cfg();
-        headers! {
-            cfg:
-            "linux/in6.h"
-        }
-        cfg.skip_type(|_| true)
-            .skip_static(|_| true)
-            .skip_fn(|_| true)
-            .skip_const(|_| true)
-            .skip_struct(|_| true)
-            .skip_const(move |name| match name {
-                "IPV6_FLOWINFO"
-                | "IPV6_FLOWLABEL_MGR"
-                | "IPV6_FLOWINFO_SEND"
-                | "IPV6_FLOWINFO_FLOWLABEL"
-                | "IPV6_FLOWINFO_PRIORITY" => false,
-                _ => true,
-            })
-            .type_name(move |ty, is_struct, is_union| match ty {
-                t if is_struct => format!("struct {}", t),
-                t if is_union => format!("union {}", t),
-                t => t.to_string(),
-            });
-        cfg.generate("../src/lib.rs", "linux_ipv6.rs");
-    }
-
-    if linux || android {
-        // Test Elf64_Phdr and Elf32_Phdr
-        // These types have a field called `p_type`, but including
-        // "resolve.h" defines a `p_type` macro that expands to `__p_type`
-        // making the tests for these fails when both are included.
-        let mut cfg = ctest_cfg();
-        cfg.header("elf.h");
-        cfg.skip_fn(|_| true)
-            .skip_static(|_| true)
-            .skip_fn(|_| true)
-            .skip_const(|_| true)
-            .type_name(move |ty, _is_struct, _is_union| ty.to_string())
-            .skip_struct(move |ty| match ty {
-                "Elf64_Phdr" | "Elf32_Phdr" => false,
-                _ => true,
-            })
-            .skip_type(move |ty| match ty {
-                "Elf64_Phdr" | "Elf32_Phdr" => false,
-                _ => true,
-            });
-        cfg.generate("../src/lib.rs", "linux_elf.rs");
-    }
-}
-
-fn which_freebsd() -> Option<i32> {
-    let output = std::process::Command::new("freebsd-version")
-        .output()
-        .ok()?;
-    if !output.status.success() {
-        return None;
-    }
-
-    let stdout = String::from_utf8(output.stdout).ok()?;
-
-    match &stdout {
-        s if s.starts_with("10") => Some(10),
-        s if s.starts_with("11") => Some(11),
-        s if s.starts_with("12") => Some(12),
-        s if s.starts_with("13") => Some(13),
-        _ => None,
-    }
-}