diff options
Diffstat (limited to 'pkgs/development/compilers/gcc/common/pre-configure.nix')
| -rw-r--r-- | pkgs/development/compilers/gcc/common/pre-configure.nix | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/pkgs/development/compilers/gcc/common/pre-configure.nix b/pkgs/development/compilers/gcc/common/pre-configure.nix deleted file mode 100644 index 75f59163bdac..000000000000 --- a/pkgs/development/compilers/gcc/common/pre-configure.nix +++ /dev/null @@ -1,104 +0,0 @@ -{ lib -, stdenv -, version, buildPlatform, hostPlatform, targetPlatform -, gnat-bootstrap ? null -, langAda ? false -, langFortran -, langJava ? false -, langJit ? false -, langGo -, withoutTargetLibc -, enableShared -, enableMultilib -, pkgsBuildTarget -}: - -assert langJava -> lib.versionOlder version "7"; -assert langAda -> gnat-bootstrap != null; let - needsLib - = (lib.versionOlder version "7" && (langJava || langGo)) - || (lib.versions.major version == "4" && lib.versions.minor version == "9" && targetPlatform.isDarwin); -in lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) '' - export NIX_LDFLAGS=`echo $NIX_LDFLAGS | sed -e s~$prefix/lib~$prefix/lib/amd64~g` - export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET" - export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET" - export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET" -'' + lib.optionalString needsLib '' - export lib=$out; -'' + lib.optionalString langAda '' - export PATH=${gnat-bootstrap}/bin:$PATH -'' - -# For a cross-built native compiler, i.e. build!=(host==target), the -# bundled libgfortran needs a gfortran which can run on the -# buildPlatform and emit code for the targetPlatform. The compiler -# which is built alongside gfortran in this configuration doesn't -# meet that need: it runs on the hostPlatform. -+ lib.optionalString (langFortran && (with stdenv; buildPlatform != hostPlatform && hostPlatform == targetPlatform)) '' - export GFORTRAN_FOR_TARGET=${pkgsBuildTarget.gfortran}/bin/${stdenv.targetPlatform.config}-gfortran -'' - -# NOTE 2020/3/18: This environment variable prevents configure scripts from -# detecting the presence of aligned_alloc on Darwin. There are many facts that -# collectively make this fix necessary: -# - Nix uses a fixed set of standard library headers on all MacOS systems, -# regardless of their actual version. (Nix uses version 10.12 headers.) -# - Nix uses the native standard library binaries for the build system. That -# means the standard library binaries may not exactly match the standard -# library headers. -# - The aligned_alloc procedure is present in MacOS 10.15 (Catalina), but not -# in earlier versions. Therefore on Catalina systems, aligned_alloc is -# linkable (i.e. present in the binary libraries) but not present in the -# headers. -# - Configure scripts detect a procedure's existence by checking whether it is -# linkable. They do not check whether it is present in the headers. -# - GCC throws an error during compilation because aligned_alloc is not -# defined in the headers---even though the linker can see it. -# -# This fix would not be necessary if ANY of the above were false: -# - If Nix used native headers for each different MacOS version, aligned_alloc -# would be in the headers on Catalina. -# - If Nix used the same library binaries for each MacOS version, aligned_alloc -# would not be in the library binaries. -# - If Catalina did not include aligned_alloc, this wouldn't be a problem. -# - If the configure scripts looked for header presence as well as -# linkability, they would see that aligned_alloc is missing. -# - If GCC allowed implicit declaration of symbols, it would not fail during -# compilation even if the configure scripts did not check header presence. -# -+ lib.optionalString (buildPlatform.isDarwin) '' - export build_configargs=ac_cv_func_aligned_alloc=no -'' + lib.optionalString (hostPlatform.isDarwin) '' - export host_configargs=ac_cv_func_aligned_alloc=no -'' + lib.optionalString (targetPlatform.isDarwin) '' - export target_configargs=ac_cv_func_aligned_alloc=no -'' - -# In order to properly install libgccjit on macOS Catalina, strip(1) -# upon installation must not remove external symbols, otherwise the -# install step errors with "symbols referenced by indirect symbol -# table entries that can't be stripped". -+ lib.optionalString (hostPlatform.isDarwin && langJit) '' - export STRIP='strip -x' -'' - -# HACK: if host and target config are the same, but the platforms are -# actually different we need to convince the configure script that it -# is in fact building a cross compiler although it doesn't believe it. -+ lib.optionalString (targetPlatform.config == hostPlatform.config && targetPlatform != hostPlatform) '' - substituteInPlace configure --replace is_cross_compiler=no is_cross_compiler=yes -'' - -# Normally (for host != target case) --without-headers automatically -# enables 'inhibit_libc=true' in gcc's gcc/configure.ac. But case of -# gcc->clang or dynamic->static "cross"-compilation manages to evade it: there -# hostPlatform != targetPlatform, hostPlatform.config == targetPlatform.config. -# We explicitly inhibit libc headers use in this case as well. -+ lib.optionalString (targetPlatform != hostPlatform && - withoutTargetLibc && - targetPlatform.config == hostPlatform.config) '' - export inhibit_libc=true -'' - -+ lib.optionalString (targetPlatform != hostPlatform && withoutTargetLibc && enableShared) - (import ./libgcc-buildstuff.nix { inherit lib stdenv; }) |