casa-mp-base

commit bd77c59acc58e797756b0fcc6739319587e95d85

Author: Bob Wilson <bob.wilson@apple.com>

Date:   Fri Aug 2 22:25:34 2013 +0000

​

    Only use the Darwin linker's -export_dynamic option with supported versions.

    Related to <rdar://problem/14578094>.

    git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187680 91177308-0d34-0410-b5e6-96231b3b80d8

​

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp

index 33e2803..dfaffaa 100644

--- a/tools/clang/lib/Driver/Tools.cpp

+++ b/tools/clang/lib/Driver/Tools.cpp

@@ -4517,6 +4517,9 @@ void darwin::Link::AddLinkArgs(Compilation &C,

       CmdArgs.push_back("-demangle");

   }

+  if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)

+    CmdArgs.push_back("-export_dynamic");

+

   // If we are using LTO, then automatically create a temporary file path for

   // the linker to use, so that it's lifetime will extend past a possible

   // dsymutil step.

@@ -4724,9 +4727,6 @@ void darwin::Link::ConstructJob(Compilation &C, const JobAction &JA,

   if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))

     CmdArgs.push_back("-ObjC");

-  if (Args.hasArg(options::OPT_rdynamic))

-    CmdArgs.push_back("-export_dynamic");

-

   CmdArgs.push_back("-o");

   CmdArgs.push_back(Output.getFilename());

diff --git a/test/Driver/darwin-ld.c b/test/Driver/darwin-ld.c

index cd511e0..d6c5170 100644

--- a/tools/clang/test/Driver/darwin-ld.c

+++ b/tools/clang/test/Driver/darwin-ld.c

@@ -130,3 +130,17 @@

 // RUN: FileCheck -check-prefix=LINK_PG %s < %t.log

 // LINK_PG: -lgcrt1.o

 // LINK_PG: -no_new_main

+

+// RUN: %clang -target x86_64-apple-darwin12 -rdynamic -### %t.o \

+// RUN:   -mlinker-version=100 2> %t.log

+// RUN: FileCheck -check-prefix=LINK_NO_EXPORT_DYNAMIC %s < %t.log

+// LINK_NO_EXPORT_DYNAMIC: {{ld(.exe)?"}}

+// LINK_NO_EXPORT_DYNAMIC-NOT: "-export_dynamic"

+

+// RUN: %clang -target x86_64-apple-darwin12 -rdynamic -### %t.o \

+// RUN:   -mlinker-version=137 2> %t.log

+// RUN: FileCheck -check-prefix=LINK_EXPORT_DYNAMIC %s < %t.log

+// LINK_EXPORT_DYNAMIC: {{ld(.exe)?"}}

+// LINK_EXPORT_DYNAMIC: "-export_dynamic"

+

+