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 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> 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) PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + GCCInstallation.getTriple().str() + "/bin") .str()); - + // Comment out the distro-specific tweaks so that they don't bite when + // using Guix on a foreign distro. +#if 0 Distro Distro(D.getVFS()); if (Distro.IsAlpineLinux()) { @@ -284,6 +286,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) if (IsAndroid || Distro.IsOpenSUSE()) 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. @@ -348,6 +351,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) } } +#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. addPathIfExists(D, SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + "/../../" + OSLibDir, @@ -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); +#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; } -for-action): remove base-image argument, add image-type argument, and use it to create the image passed to "system-image". * tests/guix-system.sh: Adapt accordingly and add a test for "--list-image-types" command. * doc/guix.texi (Building the Installation Image, Invoking guix system): Adapt accordingly. Signed-off-by: Mathieu Othacehe <othacehe@gnu.org> Mathieu Othacehe 2020-06-08system: examples: Add bare-hurd.tmpl....* gnu/system/hurd.scm (%hurd-def%hurd-default-operating-system-kernel, %hurd-default-operating-system): New exported variables. * gnu/system/examples/bare-hurd.tmpl: New file. * Makefile.am (EXAMPLES): Add it. * tests/guix-system.sh: Add --target=i586-pc-gnu when testing it. Jan (janneke) Nieuwenhuizen 2020-01-17guix system: Add workaround in test for Guile 3.0.0....* tests/guix-system.sh: For the 'GRUB-config' test, add workaround for the reported line number in Guile 3.0.0. Ludovic Courtès 2020-01-16records: Improve reporting of "invalid field specifier" errors....Previously users would just see: error: invalid field specifier without source location or hints. * guix/records.scm (expand): Add optional 'parent-form' parameter and pass it to 'syntax-violation' when it is true. (make-syntactic-constructor): Pass S as a third argument to 'report-invalid-field-specifier'. * guix/ui.scm (report-load-error): For 'syntax-error', show SUBFORM or FORM in the message. * tests/records.scm ("define-record-type* & wrong field specifier"): Add a 'subform' parameter and adjust test accordingly. ("define-record-type* & wrong field specifier, identifier"): New test. * tests/guix-system.sh: Add test. Ludovic Courtès