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libcxx: fix C++ builds with glibc <2.16 without aligned_alloc

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Emil Tywoniak 2024-01-18 14:16:52 +01:00 committed by Andrew Kelley
parent 9b714e019c
commit b80cad2484
1 changed files with 14 additions and 0 deletions
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14
src/libcxx.zig
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@ -233,6 +233,13 @@ pub fn buildLibCXX(comp: *Compilation, prog_node: *std.Progress.Node) !void {
try cflags.append("-D_LIBCPP_HAS_MUSL_LIBC");
}
if (target.isGnuLibC()) {
// glibc 2.16 introduced aligned_alloc
if (target.os.version_range.linux.glibc.order(.{ .major = 2, .minor = 16, .patch = 0 }) == .lt) {
try cflags.append("-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION");
}
}
if (target.os.tag == .wasi) {
// WASI doesn't support exceptions yet.
try cflags.append("-fno-exceptions");
@ -433,6 +440,13 @@ pub fn buildLibCXXABI(comp: *Compilation, prog_node: *std.Progress.Node) !void {
try cflags.append("-D_LIBCPP_HAS_MUSL_LIBC");
}
if (target.isGnuLibC()) {
// glibc 2.16 introduced aligned_alloc
if (target.os.version_range.linux.glibc.order(.{ .major = 2, .minor = 16, .patch = 0 }) == .lt) {
try cflags.append("-D_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION");
}
}
if (target_util.supports_fpic(target)) {
try cflags.append("-fPIC");
}