Disable "-Wl,-plugin-opt,-import-instr-limit=5" on MacOS
This option is unsupported on the MacOS ld used in Android, leading to
compilation errors when LTO is enabled for binaries.
In particular the error includes:
```
ld64.lld: error: unknown argument '-plugin-opt'
ld64.lld: error: unknown argument '-import-instr-limit=5'
```
Test: m libc++ on a Mac OS machine
Bug: 288983988
Change-Id: I1873e0a77777832f833f211beb42633d462f04d5
diff --git a/cc/lto.go b/cc/lto.go
index 878c21f..547ebff 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -109,7 +109,7 @@
// If the module does not have a profile, be conservative and limit cross TU inline
// limit to 5 LLVM IR instructions, to balance binary size increase and performance.
- if !ctx.isPgoCompile() && !ctx.isAfdoCompile() {
+ if !ctx.Darwin() && !ctx.isPgoCompile() && !ctx.isAfdoCompile() {
flags.Local.LdFlags = append(flags.Local.LdFlags,
"-Wl,-plugin-opt,-import-instr-limit=5")
}
