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| author | Daniel Mueller <deso@posteo.net> | 2018-12-29 09:55:11 -0800 |
|---|---|---|
| committer | Daniel Mueller <deso@posteo.net> | 2018-12-29 09:55:11 -0800 |
| commit | 175f321e822308839d2a4d7ae89437cd29945e65 (patch) | |
| tree | 1385c25412153d00bbcdcdcdb481df06ef48ba27 /nitrocli/Cargo.toml | |
| parent | 32c22bd1eb9fe05db30cf1062d089b21bd00c3a7 (diff) | |
| download | nitrocli-175f321e822308839d2a4d7ae89437cd29945e65.tar.gz nitrocli-175f321e822308839d2a4d7ae89437cd29945e65.tar.bz2 | |
Enable LTO and more optimizations for release builds
The program's binary is more than 1,5 MiB in size (after stripping debug
symbols). Although in general that is not a size to worry about, keeping
a small binary and memory footprint is beneficial in the majority of
cases and leaves a tangentially better impression with users.
To that end, this change enables the following optimizations to be
performed when creating a release build:
1) We compile with optimization for code size. We have no performance
sensitive code and are communicating with a slow I/O device to begin
with, meaning that binary size will ultimately have the most weight
when judging the program. Hence, minimizing it seems like the best
trade-off.
2) We enable link-time optimization (LTO). At the expense of compilation
time (which is not a concern for what may almost be considered a
one-off operation), this step can reduce binary size by eliminating
more unused code as well as enable performance related optimizations
not possible without this setting. For similar reasons we disable
incremental builds and treat the entire compilation as one unit.
The end result of these optimizations is a reduction of binary size by
almost a fourth (420 KiB).
Those optimizations come at little to no cost (depending on one's view).
There is another one that we could enable and that is to abort on panics
instead of unwinding, yielding savings of 44 KiB. However, we refrained
from doing so because that has a negative impact on the amount of error
reporting happening in case of a panic.
Diffstat (limited to 'nitrocli/Cargo.toml')
| -rw-r--r-- | nitrocli/Cargo.toml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/nitrocli/Cargo.toml b/nitrocli/Cargo.toml index ff3034a..9a692e4 100644 --- a/nitrocli/Cargo.toml +++ b/nitrocli/Cargo.toml @@ -35,6 +35,12 @@ A command line tool for interacting with the Nitrokey Storage device. [badges] gitlab = { repository = "d-e-s-o/nitrocli", branch = "master" } +[profile.release] +opt-level = "z" +lto = true +codegen-units = 1 +incremental = false + [dependencies.argparse] version = "0.2.2" path = "../argparse" |