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self-hosted build: print helpful message when libstdc++.a not found

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closes #843
This commit is contained in:
Andrew Kelley 2018-03-20 13:48:25 -04:00
parent 71b4ee931e
commit cb744f3a28
1 changed files with 8 additions and 0 deletions
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8
build.zig
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@ -64,6 +64,14 @@ pub fn build(b: &Builder) !void {
if (exe.target.getOs() == builtin.Os.linux) {
const libstdcxx_path_padded = try b.exec([][]const u8{cxx_compiler, "-print-file-name=libstdc++.a"});
const libstdcxx_path = ??mem.split(libstdcxx_path_padded, "\r\n").next();
if (mem.eql(u8, libstdcxx_path, "libstdc++.a")) {
warn(
\\Unable to determine path to libstdc++.a
\\On Fedora, install libstdc++-static and try again.
\\
);
return error.RequiredLibraryNotFound;
}
exe.addObjectFile(libstdcxx_path);
exe.linkSystemLibrary("pthread");