build.rs: support libc++ Linux distros

[Ella-0]

Some Linux distros use LLVM libc++ instead of GNU libstdc++. Would support for this in build.rs be possible?

[antiagainst]

Hi @Ella-0, thanks for the request. But unfortunately I at the moment won't have the bandwidth to work on this. Patches welcome!! :)

[Ella-0]

The following fixes it. I would create a PR but I do not want to sign the CLA.

diff --git a/shaderc-sys/build/build.rs b/shaderc-sys/build/build.rs
index 946309e..50f76ee 100644
--- a/shaderc-sys/build/build.rs
+++ b/shaderc-sys/build/build.rs
@@ -253,9 +253,13 @@ fn main() {
         } {
             match (target_os.as_str(), target_env.as_str()) {
                 ("linux", _) => {
+                    use std::process::Command;
                     println!("cargo:rustc-link-search=native={}", search_dir_str);
                     println!("cargo:rustc-link-lib={}={}", lib_kind, lib_name);
-                    println!("cargo:rustc-link-lib=dylib=stdc++");
+                    match Command::new("cc").arg("-nostdlib").arg("-lstdc++").output() {
+                        Ok(_) => println!("cargo:rustc-link-lib=dylib=stdc++"),
+                        Err(_) => println!("cargo:rustc-link-lib=dylib=c++"),
+                    }
                     return;
                 }
                 ("windows", "msvc") => {