[Driver] Use -push-/-pop-state and -as-needed for libc++ on Fuchsia
This avoids introducing unnecessary DT_NEEDED entries when using
C++ driver for linking C code or C++ code that doesn't use C++
standard library.
Differential Revision: https://reviews.llvm.org/D53854
llvm-svn: 346064
diff --git a/clang/lib/Driver/ToolChains/Fuchsia.cpp b/clang/lib/Driver/ToolChains/Fuchsia.cpp
index 94441fc..f788f91 100644
--- a/clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ b/clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -122,13 +122,14 @@
if (ToolChain.ShouldLinkCXXStdlib(Args)) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
+ CmdArgs.push_back("--push-state");
+ CmdArgs.push_back("--as-needed");
if (OnlyLibstdcxxStatic)
- CmdArgs.push_back("-Bstatic");
+ CmdArgs.push_back("-static");
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
- if (OnlyLibstdcxxStatic)
- CmdArgs.push_back("-Bdynamic");
+ CmdArgs.push_back("-lm");
+ CmdArgs.push_back("--pop-state");
}
- CmdArgs.push_back("-lm");
}
AddRunTimeLibs(ToolChain, D, CmdArgs, Args);