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Merge pull request #8876 from xxxbxxx/cxx-lto

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build libc++ with lto and function-sections
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Andrew Kelley 2021-05-24 13:58:02 -04:00 committed by GitHub
commit 8c5d4295e5
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2 changed files with 12 additions and 1 deletions
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9
src/libcxx.zig
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@ -129,6 +129,8 @@ pub fn buildLibCXX(comp: *Compilation) !void {
try cflags.append("-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-D_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS");
try cflags.append("-fvisibility=hidden");
try cflags.append("-fvisibility-inlines-hidden");
if (target.abi.isMusl()) {
try cflags.append("-D_LIBCPP_HAS_MUSL_LIBC");
@ -144,7 +146,6 @@ pub fn buildLibCXX(comp: *Compilation) !void {
try cflags.append("-fPIC");
}
try cflags.append("-nostdinc++");
try cflags.append("-fvisibility-inlines-hidden");
try cflags.append("-std=c++14");
try cflags.append("-Wno-user-defined-literals");
@ -174,6 +175,8 @@ pub fn buildLibCXX(comp: *Compilation) !void {
.want_tsan = comp.bin_file.options.tsan,
.want_pic = comp.bin_file.options.pic,
.want_pie = comp.bin_file.options.pie,
.want_lto = comp.bin_file.options.lto,
.function_sections = comp.bin_file.options.function_sections,
.emit_h = null,
.strip = comp.compilerRtStrip(),
.is_native_os = comp.bin_file.options.is_native_os,
@ -247,6 +250,8 @@ pub fn buildLibCXXABI(comp: *Compilation) !void {
try cflags.append("-D_LIBCXXABI_BUILDING_LIBRARY");
try cflags.append("-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-fvisibility=hidden");
try cflags.append("-fvisibility-inlines-hidden");
if (target.abi.isMusl()) {
try cflags.append("-D_LIBCPP_HAS_MUSL_LIBC");
@ -292,6 +297,8 @@ pub fn buildLibCXXABI(comp: *Compilation) !void {
.want_tsan = comp.bin_file.options.tsan,
.want_pic = comp.bin_file.options.pic,
.want_pie = comp.bin_file.options.pie,
.want_lto = comp.bin_file.options.lto,
.function_sections = comp.bin_file.options.function_sections,
.emit_h = null,
.strip = comp.compilerRtStrip(),
.is_native_os = comp.bin_file.options.is_native_os,

4
src/libunwind.zig
View File

@ -69,6 +69,8 @@ pub fn buildStaticLib(comp: *Compilation) !void {
}
try cflags.append("-D_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-Wa,--noexecstack");
try cflags.append("-fvisibility=hidden");
try cflags.append("-fvisibility-inlines-hidden");
// This is intentionally always defined because the macro definition means, should it only
// build for the target specified by compiler defines. Since we pass -target the compiler
@ -113,6 +115,8 @@ pub fn buildStaticLib(comp: *Compilation) !void {
.want_tsan = false,
.want_pic = comp.bin_file.options.pic,
.want_pie = comp.bin_file.options.pie,
.want_lto = comp.bin_file.options.lto,
.function_sections = comp.bin_file.options.function_sections,
.emit_h = null,
.strip = comp.compilerRtStrip(),
.is_native_os = comp.bin_file.options.is_native_os,