Add a -fuse-init-array option to cc1 and map to the UseInitArray target
option. On the driver, check if we are using libraries from gcc 4.7 or newer
and if so pass -fuse-init-array to the frontend.
The crtbegin*.o files in gcc 4.7 no longer call the constructors listed in
.ctors, so we have to use .init_array.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158694 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 53b78d2..7c75583 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -2116,6 +2116,12 @@
return *T;
}
+void Linux::addClangTargetOptions(ArgStringList &CC1Args) const {
+ const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
+ if (V >= Generic_GCC::GCCVersion::Parse("4.7.0"))
+ CC1Args.push_back("-fuse-init-array");
+}
+
void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
const Driver &D = getDriver();
@@ -2258,7 +2264,7 @@
// equivalent to '/usr/include/c++/X.Y' in almost all cases.
StringRef LibDir = GCCInstallation.getParentLibPath();
StringRef InstallDir = GCCInstallation.getInstallPath();
- StringRef Version = GCCInstallation.getVersion();
+ StringRef Version = GCCInstallation.getVersion().Text;
if (!addLibStdCXXIncludePaths(LibDir + "/../include/c++/" + Version,
(GCCInstallation.getTriple().str() +
GCCInstallation.getMultiarchSuffix()),