forked from mirrors/nixpkgs
b342dcb13b
Glibc. This is useful when building GCC. * gcc-wrapper: the dynamic linker has a different name on x86_64 and powerpc. * gcc-wrapper: "glibc" -> "libc", because someday we might support different C libraries. * gcc: don't do a multilib build (e.g., 32-bit support on x86_64), don't need it. * gcc: merge in support for static builds. * gcc: various simplifications in the compiler/linker flags, hope they work. svn path=/nixpkgs/trunk/; revision=6823
97 lines
2.4 KiB
Bash
97 lines
2.4 KiB
Bash
source $stdenv/setup
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source $substitute
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mkdir $out
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mkdir $out/bin
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mkdir $out/nix-support
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if test -z "$nativeLibc"; then
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dynamicLinker="$libc/lib/$dynamicLinker"
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echo $dynamicLinker > $out/nix-support/dynamic-linker
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# The "-B$libc/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. (This is only an issue when using an `impure'
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# compiler/linker, i.e., one that searches /usr/lib and so on.)
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echo "-B$libc/lib/ -isystem $libc/include" > $out/nix-support/libc-cflags
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echo "-L$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 "-dynamic-linker $dynamicLinker" > $out/nix-support/libc-ldflags-before
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fi
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if test -n "$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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if test -e "$gcc/lib64"; then
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gccLDFlags="$gccLDFlags -L$gcc/lib64"
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fi
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gccLDFlags="$gccLDFlags -L$gcc/lib"
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echo "$gccLDFlags" > $out/nix-support/gcc-ldflags
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gccPath="$gcc/bin"
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ldPath="$binutils/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" "$dst" \
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--subst-var "out" \
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--subst-var "shell" \
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--subst-var "gcc" \
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--subst-var "gccProg" \
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--subst-var "binutils" \
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--subst-var "libc" \
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--subst-var-by "ld" "$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 > $out/nix-support/orig-gcc
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test -n "$libc" && echo $libc > $out/nix-support/orig-libc
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doSubstitute "$addFlags" "$out/nix-support/add-flags.sh"
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doSubstitute "$setupHook" "$out/nix-support/setup-hook"
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cp -p $utils $out/nix-support/utils.sh
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