nixpkgs/pkgs/build-support/gcc-wrapper/builder.sh
Eelco Dolstra 2e0380b7a0 * Use the generic substituter in the generation of stdenv and gcc-wrapper.
svn path=/nixpkgs/trunk/; revision=2269
2005-02-22 14:32:56 +00:00

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