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a06a405d0b
It's not completely clear to me why the path to libc headers is set differently when cross building...
66 lines
2.2 KiB
Nix
66 lines
2.2 KiB
Nix
# The Nix `gcc' stdenv.mkDerivation is not directly usable, since it doesn't
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# know where the C library and standard header files are. Therefore
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# the compiler produced by that package cannot be installed directly
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# in a user environment and used from the command line. This
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# stdenv.mkDerivation provides a wrapper that sets up the right environment
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# variables so that the compiler and the linker just "work".
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{ name ? "", stdenv, nativeTools, nativeLibc, noLibc ? false, nativePrefix ? ""
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, gcc ? null, libc ? null, binutils ? null, shell ? "", cross
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}:
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assert nativeTools -> nativePrefix != "";
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assert !nativeTools -> gcc != null && binutils != null;
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assert !noLibc -> (!nativeLibc -> libc != null);
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let
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chosenName = if name == "" then gcc.name else name;
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gccLibs = stdenv.mkDerivation {
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name = chosenName + "-libs";
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phases = [ "installPhase" ];
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installPhase = ''
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echo $out
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mkdir -p "$out"
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if [ -d "${gcc}/${cross.config}/lib" ]
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then
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cp -Rd "${gcc}/${cross.config}/lib" "$out/lib"
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chmod -R +w "$out/lib"
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for a in "$out/lib/"*.la; do
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sed -i -e "s,${gcc}/${cross.config}/lib,$out/lib,g" $a
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done
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rm -f "$out/lib/"*.py
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else
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# The MinGW cross-compiler falls into this category.
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mkdir "$out/lib"
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fi
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'';
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};
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in
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stdenv.mkDerivation {
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builder = ./builder.sh;
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setupHook = ./setup-hook.sh;
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gccWrapper = ./gcc-wrapper.sh;
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ldWrapper = ./ld-wrapper.sh;
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utils = ./utils.sh;
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addFlags = ./add-flags;
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inherit nativeTools nativeLibc nativePrefix gcc binutils;
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libc = if libc ? out then libc.out else libc;
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libc_dev = if libc ? dev then libc.dev else libc;
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crossConfig = if cross != null then cross.config else null;
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osxMinVersion = cross.osxMinVersion or null;
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gccLibs = if gcc != null then gccLibs else null;
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name = chosenName;
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langC = if nativeTools then true else gcc.langC;
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langCC = if nativeTools then true else gcc.langCC;
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langF77 = if nativeTools then false else gcc ? langFortran;
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shell = if shell == "" then stdenv.shell else shell;
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meta = if gcc != null then gcc.meta else
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{ description = "System C compiler wrapper";
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};
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passthru = {
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target = cross;
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};
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}
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