Teach the driver on Linux to respect -nodefaultlibs.
Patch from Andrew C. Morrow.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156771 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 769bd81..e396669 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -5313,7 +5313,9 @@
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
- if (D.CCCIsCXX && !Args.hasArg(options::OPT_nostdlib)) {
+ if (D.CCCIsCXX &&
+ !Args.hasArg(options::OPT_nostdlib) &&
+ !Args.hasArg(options::OPT_nodefaultlibs)) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (OnlyLibstdcxxStatic)
@@ -5328,22 +5330,23 @@
addAsanRTLinux(getToolChain(), Args, CmdArgs);
if (!Args.hasArg(options::OPT_nostdlib)) {
- if (Args.hasArg(options::OPT_static))
- CmdArgs.push_back("--start-group");
+ if (!Args.hasArg(options::OPT_nodefaultlibs)) {
+ if (Args.hasArg(options::OPT_static))
+ CmdArgs.push_back("--start-group");
- AddLibgcc(ToolChain.getTriple(), D, CmdArgs, Args);
-
- if (Args.hasArg(options::OPT_pthread) ||
- Args.hasArg(options::OPT_pthreads))
- CmdArgs.push_back("-lpthread");
-
- CmdArgs.push_back("-lc");
-
- if (Args.hasArg(options::OPT_static))
- CmdArgs.push_back("--end-group");
- else
AddLibgcc(ToolChain.getTriple(), D, CmdArgs, Args);
+ if (Args.hasArg(options::OPT_pthread) ||
+ Args.hasArg(options::OPT_pthreads))
+ CmdArgs.push_back("-lpthread");
+
+ CmdArgs.push_back("-lc");
+
+ if (Args.hasArg(options::OPT_static))
+ CmdArgs.push_back("--end-group");
+ else
+ AddLibgcc(ToolChain.getTriple(), D, CmdArgs, Args);
+ }
if (!Args.hasArg(options::OPT_nostartfiles)) {
const char *crtend;
diff --git a/test/Driver/nodefaultlib.c b/test/Driver/nodefaultlib.c
new file mode 100644
index 0000000..518928a
--- /dev/null
+++ b/test/Driver/nodefaultlib.c
@@ -0,0 +1,8 @@
+// RUN: %clang -target i686-pc-linux-gnu -### -nodefaultlibs %s 2> %t
+// RUN: FileCheck < %t %s
+//
+// CHECK-NOT: start-group
+// CHECK-NOT: -lgcc
+// CHECK-NOT: -lc
+// CHECK: crtbegin
+// CHECK: crtend