Use -std=c++14 flag when compiling libnitrokey

Based on the patch proposed by Philippe Normand at [0].

[0] https://github.com/d-e-s-o/nitrocli/pull/42

1 files changed, 1 insertions, 0 deletions

diff --git a/build.rs b/build.rs
index a22bbd0..38950d3 100644
--- a/build.rs
+++ b/build.rs
@@ -95,6 +95,7 @@ fn main() {
 
     cc::Build::new()
         .cpp(true)
+        .flag("-std=c++14")
         .include(library_path.join("libnitrokey"))
         .files(sources.iter().map(|s| library_path.join(s)))
         .file(version_source)