3b956a3392
* gnu/packages/llvm.scm (llvm, clang-runtime, clang): Update to 3.8.1. (llvm-3.7, clang-runtime-3.7, clang-3.7): New variables. (clang-runtime-from-llvm)[arguments]: Disable tests, which were not being run for previous versions anyhow but now fail hard. (clang-from-llvm): Add #:patches keyword argument. * gnu/packages/patches/clang-3.8-libc-search-path.patch: New patch. * gnu/local.mk (dist_patch_DATA): Add it. Co-authored-by: Dennis Mungai <dmngaie@gmail.scm>
69 lines
2.6 KiB
Diff
69 lines
2.6 KiB
Diff
Clang attempts to guess file names based on the OS and distro (yes!),
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but unfortunately, that doesn't work for us.
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This patch makes it easy to insert libc's $libdir so that Clang passes the
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correct absolute file name of crt1.o etc. to 'ld'. It also disables all
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the distro-specific stuff and removes the hard-coded FHS directory names
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to make sure Clang also works on non-GuixSD systems.
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This patch makes slight adjustments over "clang-libc-search-path.patch" for
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changes in clang 3.8.
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--- cfe-3.8.0.src/lib/Driver/ToolChains.cpp
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+++ cfe-3.8.0.src/lib/Driver/ToolChains.cpp
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@@ -3661,6 +3661,9 @@
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GCCInstallation.getTriple().str() + "/bin")
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.str());
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+ // Comment out the distro-specific tweaks so that they don't bite when
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+ // using Guix on a foreign distro.
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+#if 0
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Distro Distro = DetectDistro(D, Arch);
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if (IsOpenSUSE(Distro) || IsUbuntu(Distro)) {
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@@ -3702,6 +3705,7 @@
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if (IsOpenSUSE(Distro))
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ExtraOpts.push_back("--enable-new-dtags");
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+#endif
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// The selection of paths to try here is designed to match the patterns which
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// the GCC driver itself uses, as this is part of the GCC-compatible driver.
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@@ -3771,14 +3775,12 @@
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addPathIfExists(D, D.Dir + "/../" + OSLibDir, Paths);
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}
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- addPathIfExists(D, SysRoot + "/lib/" + MultiarchTriple, Paths);
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- addPathIfExists(D, SysRoot + "/lib/../" + OSLibDir, Paths);
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- addPathIfExists(D, SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
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- addPathIfExists(D, SysRoot + "/usr/lib/../" + OSLibDir, Paths);
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-
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// Try walking via the GCC triple path in case of biarch or multiarch GCC
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// installations with strange symlinks.
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if (GCCInstallation.isValid()) {
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+ // The following code would end up adding things like
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+ // "/usr/lib/x86_64-unknown-linux-gnu/../../lib64" to the search path.
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+#if 0
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addPathIfExists(D,
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SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() +
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"/../../" + OSLibDir,
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@@ -3791,6 +3793,7 @@
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BiarchSibling.gccSuffix(),
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Paths);
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}
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+#endif
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// See comments above on the multilib variant for details of why this is
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// included even from outside the sysroot.
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@@ -3815,8 +3818,9 @@
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if (StringRef(D.Dir).startswith(SysRoot))
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addPathIfExists(D, D.Dir + "/../lib", Paths);
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- addPathIfExists(D, SysRoot + "/lib", Paths);
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- addPathIfExists(D, SysRoot + "/usr/lib", Paths);
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+ // Add libc's lib/ directory to the search path, so that crt1.o, crti.o,
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+ // and friends can be found.
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+ addPathIfExists(D, "@GLIBC_LIBDIR@", Paths);
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}
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bool Linux::HasNativeLLVMSupport() const { return true; }
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