mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-16 14:54:29 +01:00
94 lines
2.4 KiB
Bash
94 lines
2.4 KiB
Bash
source $stdenv/setup
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source $substitute
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# Force gcc to use ld-wrapper.sh when calling ld.
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cflagsCompile="-B$out/bin/"
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if test -z "$nativeGlibc"; then
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# The "-B$glibc/lib/" flag is a quick hack to force gcc to link
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# against the crt1.o from our own glibc, rather than the one in
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# /usr/lib. The real solution is of course to prevent those paths
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# from being used by gcc in the first place.
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# The dynamic linker is passed in `ldflagsBefore' to allow
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# explicit overrides of the dynamic linker by callers to gcc/ld
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# (the *last* value counts, so ours should come first).
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cflagsCompile="$cflagsCompile -B$glibc/lib/ -isystem $glibc/include"
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ldflags="$ldflags -L$glibc/lib"
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ldflagsBefore="-dynamic-linker $glibc/lib/ld-linux.so.2"
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fi
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if test -n "$nativeTools"; then
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gccPath="$nativePrefix/bin"
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ldPath="$nativePrefix/bin"
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else
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ldflags="$ldflags -L$gcc/lib"
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gccPath="$gcc/bin"
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ldPath="$binutils/bin"
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fi
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mkdir $out
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mkdir $out/bin
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mkdir $out/nix-support
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doSubstitute() {
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local src=$1
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local dst=$2
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substitute "$src" "$dst" \
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--subst-var "out" \
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--subst-var "shell" \
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--subst-var "gcc" \
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--subst-var "gccProg" \
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--subst-var "binutils" \
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--subst-var "glibc" \
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--subst-var "cflagsCompile" \
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--subst-var "cflagsLink" \
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--subst-var "ldflags" \
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--subst-var "ldflagsBefore" \
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--subst-var-by "ld" "$ldPath/ld"
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}
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# Make wrapper scripts around gcc, g++, and g77. Also make symlinks
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# cc, c++, and f77.
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mkGccWrapper() {
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local dst=$1
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local src=$2
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if ! test -f "$src"; then
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echo "$src does not exist (skipping)"
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return
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fi
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gccProg="$src"
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doSubstitute "$gccWrapper" "$dst"
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chmod +x "$dst"
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}
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mkGccWrapper $out/bin/gcc $gccPath/gcc
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ln -s gcc $out/bin/cc
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mkGccWrapper $out/bin/g++ $gccPath/g++
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ln -s g++ $out/bin/c++
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mkGccWrapper $out/bin/g77 $gccPath/g77
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ln -s g77 $out/bin/f77
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# Make a wrapper around the linker.
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doSubstitute "$ldWrapper" "$out/bin/ld"
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chmod +x "$out/bin/ld"
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# Emit a setup hook. Also store the path to the original GCC and
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# Glibc.
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test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
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test -n "$glibc" && echo $glibc > $out/nix-support/orig-glibc
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doSubstitute "$addFlags" "$out/nix-support/add-flags"
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doSubstitute "$setupHook" "$out/nix-support/setup-hook"
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cp -p $utils $out/nix-support/utils
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