diff options
Diffstat (limited to 'lib/Driver')
| -rw-r--r-- | lib/Driver/Driver.cpp | 4 | ||||
| -rw-r--r-- | lib/Driver/Tools.cpp | 17 |
2 files changed, 17 insertions, 4 deletions
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp index cc5b016b03..3167e03ca4 100644 --- a/lib/Driver/Driver.cpp +++ b/lib/Driver/Driver.cpp @@ -287,7 +287,9 @@ Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) { // ccc-install-dir) can change 'Dir'. StringRef ClangResourceDir(CLANG_RESOURCE_DIR); SmallString<128> P(Dir); - if (!ClangResourceDir.empty()) + if (const Arg *A = Args->getLastArg(options::OPT_resource_dir)) + P = A->getValue(); + else if (!ClangResourceDir.empty()) llvm::sys::path::append(P, ClangResourceDir); else llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING); diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index cb84e0a547..2581ae36f7 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -1575,7 +1575,8 @@ SanitizerArgs::SanitizerArgs(const Driver &D, const ArgList &Args) static void addSanitizerRTLinkFlagsLinux( const ToolChain &TC, const ArgList &Args, ArgStringList &CmdArgs, - const StringRef Sanitizer, bool BeforeLibStdCXX) { + const StringRef Sanitizer, bool BeforeLibStdCXX, + bool ExportSymbols = true) { // Sanitizer runtime is located in the Linux library directory and // has name "libclang_rt.<Sanitizer>-<ArchName>.a". SmallString<128> LibSanitizer(TC.getDriver().ResourceDir); @@ -1599,7 +1600,17 @@ static void addSanitizerRTLinkFlagsLinux( CmdArgs.push_back("-lpthread"); CmdArgs.push_back("-ldl"); - CmdArgs.push_back("-export-dynamic"); + + // If possible, use a dynamic symbols file to export the symbols from the + // runtime library. If we can't do so, use -export-dynamic instead to export + // all symbols from the binary. + if (ExportSymbols) { + if (llvm::sys::fs::exists(LibSanitizer + ".syms")) + CmdArgs.push_back( + Args.MakeArgString("--dynamic-list=" + LibSanitizer + ".syms")); + else + CmdArgs.push_back("-export-dynamic"); + } } /// If AddressSanitizer is enabled, add appropriate linker flags (Linux). @@ -1666,7 +1677,7 @@ static void addUbsanRTLinux(const ToolChain &TC, const ArgList &Args, // Need a copy of sanitizer_common. This could come from another sanitizer // runtime; if we're not including one, include our own copy. if (!HasOtherSanitizerRt) - addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "san", true); + addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "san", true, false); addSanitizerRTLinkFlagsLinux(TC, Args, CmdArgs, "ubsan", false); |