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https://github.com/NixOS/nixpkgs.git
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25f0b7cb50
The gcc-wrapper doesn't wrap 'cpp'. This breaks some software (such as Buildroot) because the 'cpp' they get come from the non-wrapped gcc package which doesn't know about any standard include paths. gcc-cross-wrapper is untested.
116 lines
3.5 KiB
Bash
116 lines
3.5 KiB
Bash
source $stdenv/setup
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mkdir $out
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mkdir $out/bin
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mkdir $out/nix-support
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# Force gcc to use ld-wrapper.sh when calling ld.
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cflagsCompile="-B$out/bin/"
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if test -z "$nativeLibc"; then
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cflagsCompile="$cflagsCompile -B$gccLibs/lib -B$libc/lib/ -isystem $libc/include"
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ldflags="$ldflags -L$libc/lib"
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# Get the proper dynamic linker for glibc and uclibc.
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dlinker=`eval 'echo $libc/lib/ld*.so.?'`
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if [ -n "$dlinker" ]; then
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ldflagsBefore="-dynamic-linker $dlinker"
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# The same as above, but put into files, useful for the gcc builder.
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echo $dlinker > $out/nix-support/dynamic-linker
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# This trick is to avoid dependencies on the cross-toolchain gcc
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# for libgcc, libstdc++, ...
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# -L is for libtool's .la files, and -rpath for the usual fixupPhase
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# shrinking rpaths.
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if [ -n "$gccLibs" ]; then
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ldflagsBefore="$ldflagsBefore -rpath $gccLibs/lib"
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fi
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fi
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echo "$cflagsCompile -B$libc/lib/ -idirafter $libc/include -idirafter $gcc/lib/gcc/*/*/include-fixed" > $out/nix-support/libc-cflags
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echo "-L$libc/lib -rpath $libc/lib -rpath-link $libc/lib" > $out/nix-support/libc-ldflags
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# The dynamic linker is passed in `ldflagsBefore' to allow
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# explicit overrides of the dynamic linker by callers to gcc/ld
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# (the *last* value counts, so ours should come first).
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echo "$ldflagsBefore" > $out/nix-support/libc-ldflags-before
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fi
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if test -n "$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 -L$gcc/lib64"
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gccPath="$gcc/bin"
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ldPath="$binutils/$crossConfig/bin"
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fi
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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" "$dst" \
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--subst-var "out" \
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--subst-var "shell" \
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--subst-var "gcc" \
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--subst-var "gccProg" \
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--subst-var "binutils" \
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--subst-var "libc" \
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--subst-var "cflagsCompile" \
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--subst-var "cflagsLink" \
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--subst-var "ldflags" \
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--subst-var "ldflagsBefore" \
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--subst-var "ldPath" \
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--subst-var-by "ld" "$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 $out/bin/$crossConfig-gcc $gccPath/$crossConfig-gcc
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#ln -s gcc $out/bin/cc
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mkGccWrapper $out/bin/$crossConfig-g++ $gccPath/$crossConfig-g++
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ln -s $crossConfig-g++ $out/bin/$crossConfig-c++
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mkGccWrapper $out/bin/$crossConfig-cpp $gccPath/$crossConfig-cpp
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mkGccWrapper $out/bin/$crossConfig-g77 $gccPath/$crossConfig-g77
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ln -s $crossConfig-g77 $out/bin/$crossConfig-f77
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ln -s $binutils/bin/$crossConfig-ar $out/bin/$crossConfig-ar
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ln -s $binutils/bin/$crossConfig-as $out/bin/$crossConfig-as
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ln -s $binutils/bin/$crossConfig-nm $out/bin/$crossConfig-nm
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ln -s $binutils/bin/$crossConfig-strip $out/bin/$crossConfig-strip
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# Make a wrapper around the linker.
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doSubstitute "$ldWrapper" "$out/bin/$crossConfig-ld"
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chmod +x "$out/bin/$crossConfig-ld"
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# Emit a setup hook. Also store the path to the original GCC and
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# Glibc.
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test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
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test -n "$libc" && echo $libc > $out/nix-support/orig-libc
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doSubstitute "$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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