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Add an option for libraries to opt out of libcrt

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Test: m checkbuild
Bug: 29275768
Change-Id: I9c0999ddc15ad152c47089509f91dc1dc901f7e4
This commit is contained in:
Yi Kong
2018-10-10 13:43:02 -07:00
parent 38441856ca
commit 2c188bea78
1 changed files with 11 additions and 4 deletions
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15
cc/linker.go
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@@ -59,6 +59,9 @@ type BaseLinkerProperties struct {
// don't link in libgcc.a
No_libgcc *bool
// don't link in libclang_rt.builtins-*.a
No_libcrt *bool
// Use clang lld instead of gnu ld.
Use_clang_lld *bool `android:"arch_variant"`
@@ -216,10 +219,14 @@ func (linker *baseLinker) linkerDeps(ctx DepsContext, deps Deps) Deps {
}
if ctx.toolchain().Bionic() {
// libclang_rt.builtins, libgcc and libatomic have to be last on the command line
// TODO: Also enable for libc and libm
if ctx.ModuleName() != "libc" && ctx.ModuleName() != "libm" {
deps.LateStaticLibs = append(deps.LateStaticLibs, config.BuiltinsRuntimeLibrary(ctx.toolchain()))
// Allow individual projects to opt out of libcrt,builtins
// b/117565638
if !Bool(linker.Properties.No_libcrt) {
// libclang_rt.builtins, libgcc and libatomic have to be last on the command line
// TODO: Also enable for libc and libm
if ctx.ModuleName() != "libc" && ctx.ModuleName() != "libm" {
deps.LateStaticLibs = append(deps.LateStaticLibs, config.BuiltinsRuntimeLibrary(ctx.toolchain()))
}
}
deps.LateStaticLibs = append(deps.LateStaticLibs, "libatomic")