diff options
Diffstat (limited to 'gnu/packages/patches/clang-7.0-libc-search-path.patch')
| -rw-r--r-- | gnu/packages/patches/clang-7.0-libc-search-path.patch | 82 |
1 files changed, 47 insertions, 35 deletions
diff --git a/gnu/packages/patches/clang-7.0-libc-search-path.patch b/gnu/packages/patches/clang-7.0-libc-search-path.patch index 07ff8c90bd..cb7088eda4 100644 --- a/gnu/packages/patches/clang-7.0-libc-search-path.patch +++ b/gnu/packages/patches/clang-7.0-libc-search-path.patch @@ -4,8 +4,39 @@ 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. +to make sure Clang also works on foreign distros. +diff --git a/lib/Driver/Distro.cpp b/lib/Driver/Distro.cpp +index 2c4d44f..0493b0a 100644 +--- a/lib/Driver/Distro.cpp ++++ b/lib/Driver/Distro.cpp +@@ -18,6 +18,10 @@ using namespace clang::driver; + using namespace clang; + + static Distro::DistroType DetectDistro(vfs::FileSystem &VFS) { ++ // The compiler should always behave the same, even when used via Guix on a ++ // foreign distro. ++ return Distro::UnknownDistro; ++ + llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = + VFS.getBufferForFile("/etc/lsb-release"); + if (File) { +diff --git a/lib/Driver/ToolChains/Cuda.cpp b/lib/Driver/ToolChains/Cuda.cpp +index 7fb4ae4..cb21344 100644 +--- a/lib/Driver/ToolChains/Cuda.cpp ++++ b/lib/Driver/ToolChains/Cuda.cpp +@@ -66,6 +66,9 @@ CudaInstallationDetector::CudaInstallationDetector( + const Driver &D, const llvm::Triple &HostTriple, + const llvm::opt::ArgList &Args) + : D(D) { ++ // Don't look for CUDA in /usr. ++ return; ++ + struct Candidate { + std::string Path; + bool StrictChecking; +diff --git a/lib/Driver/ToolChains/Linux.cpp b/lib/Driver/ToolChains/Linux.cpp +index f8f3623..36dc722 100644 --- a/lib/Driver/ToolChains/Linux.cpp +++ b/lib/Driver/ToolChains/Linux.cpp @@ -225,7 +225,9 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) @@ -27,56 +58,37 @@ to make sure Clang also works on non-GuixSD systems. // 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. -@@ -342,7 +345,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) - // the cross. Note that GCC does include some of these directories in some - // configurations but this seems somewhere between questionable and simply - // a bug. -- if (StringRef(LibPath).startswith(SysRoot)) { -+ if (0) { - addPathIfExists(D, LibPath + "/" + MultiarchTriple, Paths); - addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); +@@ -348,6 +351,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) } -@@ -361,6 +364,8 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) - addPathIfExists(D, SysRoot + "/lib/" + MultiarchTriple, Paths); - addPathIfExists(D, SysRoot + "/lib/../" + OSLibDir, Paths); - -+ // This requires the commented distro tweaks above. -+#if 0 - if (IsAndroid) { - // Android sysroots contain a library directory for each supported OS - // version as well as some unversioned libraries in the usual multiarch -@@ -389,10 +394,14 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) - addPathIfExists(D, SysRoot + "/" + OSLibDir + "/" + ABIName, Paths); - addPathIfExists(D, SysRoot + "/usr/" + OSLibDir + "/" + ABIName, Paths); } -+#endif ++#if 0 + // Similar to the logic for GCC above, if we currently running Clang inside + // of the requested system root, add its parent library paths to + // those searched. +@@ -393,6 +397,8 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) // 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(D, SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + "/../../" + OSLibDir, -@@ -405,6 +414,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) - BiarchSibling.gccSuffix(), - Paths); - } -+#endif - - // See comments above on the multilib variant for details of why this is - // included even from outside the sysroot. -@@ -429,8 +439,9 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) +@@ -428,9 +434,14 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) + // directory ('Dir' below) or the ResourceDir. if (StringRef(D.Dir).startswith(SysRoot)) addPathIfExists(D, D.Dir + "/../lib", Paths); - -- addPathIfExists(D, SysRoot + "/lib", Paths); -- addPathIfExists(D, SysRoot + "/usr/lib", Paths); ++#endif ++ + // Add libc's lib/ directory to the search path, so that crt1.o, crti.o, + // and friends can be found. + addPathIfExists(D, "@GLIBC_LIBDIR@", Paths); + +- addPathIfExists(D, SysRoot + "/lib", Paths); +- addPathIfExists(D, SysRoot + "/usr/lib", Paths); ++ // Add GCC's lib/ directory so libstdc++.so can be found. ++ addPathIfExists(D, GCCInstallation.getParentLibPath(), Paths); } bool Linux::HasNativeLLVMSupport() const { return true; } |