diff options
| author | Bob Wilson <bob.wilson@apple.com> | 2012-07-03 20:42:10 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2012-07-03 20:42:10 +0000 |
| commit | 1fc6e4fa79444b2a7be8a1150f646ffbde68b744 (patch) | |
| tree | 309b13e3238d65a18c1ce1e5c9b88f14f1102cd8 | |
| parent | c70851b74c06b27df07b9a772656a2e663d432ee (diff) | |
When using -pg targeting OS X 10.8, pass -no_new_main to the linker.
By default on OS X 10.8, we don't link with a crt1.o file and the linker
knows to use _main as the entry point. But, when compiling with -pg, we
need to link with the gcrt1.o file, and the linker needs to be told to use
the "start" symbol as the entry point. The -no_new_main linker option does
that last part. <rdar://problem/11491405>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159683 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Driver/Tools.cpp | 3 | ||||
| -rw-r--r-- | test/Driver/darwin-ld.c | 5 |
2 files changed, 8 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index c5a837f3d1..601ea54c29 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -4341,6 +4341,9 @@ void darwin::Link::ConstructJob(Compilation &C, const JobAction &JA, // darwin_crt2 spec is empty. } + if (getDarwinToolChain().isTargetMacOS() && + !getDarwinToolChain().isMacosxVersionLT(10, 8)) + CmdArgs.push_back("-no_new_main"); } else { if (Args.hasArg(options::OPT_static) || Args.hasArg(options::OPT_object) || diff --git a/test/Driver/darwin-ld.c b/test/Driver/darwin-ld.c index 3206f654d5..4cda37f9b2 100644 --- a/test/Driver/darwin-ld.c +++ b/test/Driver/darwin-ld.c @@ -121,3 +121,8 @@ // RUN: %clang -target x86_64-apple-darwin12 -### %t.o 2> %t.log // RUN: FileCheck -check-prefix=LINK_NO_CRT1 %s < %t.log // LINK_NO_CRT1-NOT: crt + +// RUN: %clang -target i386-apple-darwin12 -pg -### %t.o 2> %t.log +// RUN: FileCheck -check-prefix=LINK_PG %s < %t.log +// LINK_PG: -lgcrt1.o +// LINK_PG: -no_new_main |