diff options
Diffstat (limited to 'gnu/packages/patches/clang-3.5-libc-search-path.patch')
| -rw-r--r-- | gnu/packages/patches/clang-3.5-libc-search-path.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/gnu/packages/patches/clang-3.5-libc-search-path.patch b/gnu/packages/patches/clang-3.5-libc-search-path.patch new file mode 100644 index 0000000000..50e4480239 --- /dev/null +++ b/gnu/packages/patches/clang-3.5-libc-search-path.patch @@ -0,0 +1,66 @@ +Clang attempts to guess file names based on the OS and distro (yes!), +but unfortunately, that doesn't work for us. + +This patch makes it easy to insert libc's $libdir so that Clang passes the +correct absolute file name of crt1.o etc. to 'ld'. It also disables all +the distro-specific stuff and removes the hard-coded FHS directory names +to make sure Clang also works on non-GuixSD systems. + +--- cfe-3.6.0.src/lib/Driver/ToolChains.cpp 2015-02-18 22:03:07.000000000 +0100 ++++ cfe-3.6.0.src/lib/Driver/ToolChains.cpp 2015-06-19 16:37:20.459701044 +0200 +@@ -2931,6 +2931,9 @@ Linux::Linux(const Driver &D, const llvm + + Linker = GetLinkerPath(); + ++ // Comment out the distro-specific tweaks so that they don't bite when ++ // using Guix on a foreign distro. ++#if 0 + Distro Distro = DetectDistro(Arch); + + if (IsOpenSUSE(Distro) || IsUbuntu(Distro)) { +@@ -2973,6 +2976,7 @@ Linux::Linux(const Driver &D, const llvm + + if (IsOpenSUSE(Distro)) + ExtraOpts.push_back("--enable-new-dtags"); ++#endif + + // The selection of paths to try here is designed to match the patterns which + // the GCC driver itself uses, as this is part of the GCC-compatible driver. +@@ -3043,14 +3047,12 @@ Linux::Linux(const Driver &D, const llvm + addPathIfExists(D.Dir + "/../" + OSLibDir, Paths); + } + +- addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths); +- addPathIfExists(SysRoot + "/lib/../" + OSLibDir, Paths); +- addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths); +- addPathIfExists(SysRoot + "/usr/lib/../" + OSLibDir, Paths); +- + // Try walking via the GCC triple path in case of biarch or multiarch GCC + // installations with strange symlinks. + if (GCCInstallation.isValid()) { ++ // The following code would end up adding things like ++ // "/usr/lib/x86_64-unknown-linux-gnu/../../lib64" to the search path. ++#if 0 + addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + + "/../../" + OSLibDir, Paths); + +@@ -3060,6 +3062,7 @@ Linux::Linux(const Driver &D, const llvm + addPathIfExists(GCCInstallation.getInstallPath() + + BiarchSibling.gccSuffix(), Paths); + } ++#endif + + // See comments above on the multilib variant for details of why this is + // included even from outside the sysroot. +@@ -3083,8 +3086,9 @@ Linux::Linux(const Driver &D, const llvm + if (StringRef(D.Dir).startswith(SysRoot)) + addPathIfExists(D.Dir + "/../lib", Paths); + +- addPathIfExists(SysRoot + "/lib", Paths); +- addPathIfExists(SysRoot + "/usr/lib", Paths); ++ // Add libc's lib/ directory to the search path, so that crt1.o, crti.o, ++ // and friends can be found. ++ addPathIfExists("@GLIBC_LIBDIR@", Paths); + } + + bool Linux::HasNativeLLVMSupport() const { |