From: Dimitry Andric <dimitry@andric.com>
Date: Sun, 14 Feb 2016 16:08:20 +0000 (+0000)
Subject: As reported in https://llvm.org/bugs/show_bug.cgi?id=25496, on FreeBSD,
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3c7f04f6360bef27557212d7c1b4662f6e5aeb76;p=clang

As reported in https://llvm.org/bugs/show_bug.cgi?id=25496, on FreeBSD,
C++ programs compiled for profiling (using `-pg`) should be linked with
`-lc++_p` (or `-lstdc++_p`, depending on the `-stdlib=` setting), not
with the regular C++ libraries.

Add a `FreeBSD::AddCXXStdlibLibArgs()` override to handle this, and add
a test case for it.  While here, extend the test case for the proper
passing of -lm and -lm_p.

Reviewers: compnerd, davide, dws, emaste
Reviewed By: compnerd
Differential Revision: http://reviews.llvm.org/D16264


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@260851 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index cb5e7329cd..ae24e4731b 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -3128,6 +3128,22 @@ void FreeBSD::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
   }
 }
 
+void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
+                                  ArgStringList &CmdArgs) const {
+  CXXStdlibType Type = GetCXXStdlibType(Args);
+  bool Profiling = Args.hasArg(options::OPT_pg);
+
+  switch (Type) {
+  case ToolChain::CST_Libcxx:
+    CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
+    break;
+
+  case ToolChain::CST_Libstdcxx:
+    CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
+    break;
+  }
+}
+
 Tool *FreeBSD::buildAssembler() const {
   return new tools::freebsd::Assembler(*this);
 }
diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index 127f37f549..11e4c834b4 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -728,6 +728,8 @@ public:
   void AddClangCXXStdlibIncludeArgs(
       const llvm::opt::ArgList &DriverArgs,
       llvm::opt::ArgStringList &CC1Args) const override;
+  void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
+                           llvm::opt::ArgStringList &CmdArgs) const override;
 
   bool UseSjLjExceptions(const llvm::opt::ArgList &Args) const override;
   bool isPIEDefault() const override;
diff --git a/test/Driver/freebsd.cpp b/test/Driver/freebsd.cpp
index dea3267233..175b873bf4 100644
--- a/test/Driver/freebsd.cpp
+++ b/test/Driver/freebsd.cpp
@@ -2,5 +2,12 @@
 // RUN:   | FileCheck --check-prefix=CHECK-TEN %s
 // RUN: %clangxx %s -### -o %t.o -target amd64-unknown-freebsd9.2 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NINE %s
-// CHECK-TEN: -lc++
-// CHECK-NINE: -lstdc++
+// CHECK-TEN: "-lc++" "-lm"
+// CHECK-NINE: "-lstdc++" "-lm"
+
+// RUN: %clangxx %s -### -pg -o %t.o -target amd64-unknown-freebsd10.0 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-PG-TEN %s
+// RUN: %clangxx %s -### -pg -o %t.o -target amd64-unknown-freebsd9.2 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-PG-NINE %s
+// CHECK-PG-TEN: "-lc++_p" "-lm_p"
+// CHECK-PG-NINE: "-lstdc++_p" "-lm_p"