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linux: search for system libc++

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When linking system llvm/clang/lld, add system libc++ to the searchlist.
This is needed for certain distros (eg. chimera linux).

closes #16754
This commit is contained in:
Michael Dusan 2023-08-09 22:27:35 -04:00 committed by Andrew Kelley
parent 9f88b3ae89
commit 6ef836bfff
1 changed files with 10 additions and 8 deletions
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18
build.zig
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@ -630,14 +630,16 @@ fn addCmakeCfgOptionsToExe(
const lib_suffix = if (static) exe.target.staticLibSuffix()[1..] else exe.target.dynamicLibSuffix()[1..];
switch (exe.target.getOsTag()) {
.linux => {
// First we try to link against gcc libstdc++. If that doesn't work, we fall
// back to -lc++ and cross our fingers.
addCxxKnownPath(b, cfg, exe, b.fmt("libstdc++.{s}", .{lib_suffix}), "", need_cpp_includes) catch |err| switch (err) {
error.RequiredLibraryNotFound => {
exe.linkLibCpp();
},
else => |e| return e,
};
// First we try to link against system libstdc++ or libc++.
// If that doesn't work, we fall to -lc++ and cross our fingers.
const found = for ([_][]const u8{ "stdc++", "c++" }) |name| {
addCxxKnownPath(b, cfg, exe, b.fmt("lib{s}.{s}", .{ name, lib_suffix }), "", need_cpp_includes) catch |err| switch (err) {
error.RequiredLibraryNotFound => continue,
else => |e| return e,
};
break true;
} else false;
if (!found) exe.linkLibCpp();
exe.linkSystemLibrary("unwind");
},
.ios, .macos, .watchos, .tvos => {