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| author | Emily <vcs@emily.moe> | 2024-10-05 21:50:14 +0100 |
|---|---|---|
| committer | Emily <vcs@emily.moe> | 2024-11-07 23:05:26 +0000 |
| commit | 2bb6cec0c85d367e36aaa8361d3d9caf2f6627d8 (patch) | |
| tree | 177849b65637fc8cb590b28d99a5d9eafeb9bf86 | |
| parent | cctools: remove code for macOS < 11 (diff) | |
| download | nixpkgs-2bb6cec0c85d367e36aaa8361d3d9caf2f6627d8.tar.gz | |
gcc: remove code for macOS < 11
| -rw-r--r-- | pkgs/development/compilers/gcc/common/pre-configure.nix | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/pkgs/development/compilers/gcc/common/pre-configure.nix b/pkgs/development/compilers/gcc/common/pre-configure.nix index 9e1764eae916..6e22a59d5792 100644 --- a/pkgs/development/compilers/gcc/common/pre-configure.nix +++ b/pkgs/development/compilers/gcc/common/pre-configure.nix @@ -32,42 +32,6 @@ lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) '' 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 |