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nixpkgs/pkgs/build-support/gcc-cross-wrapper/builder.sh
aszlig 625d7b9043
Merge pull request #1928 from 'cross-win-osx'.
This includes a lot of fixes for cross-building to Windows and Mac OS X
and could possibly fix things even for non-cross-builds, like for
example OpenSSL on Windows.

The main reason for merging this in 14.04 already is that we already
have runInWindowsVM in master and it doesn't work until we actually
cross-build Cygwin's setup binary as the upstream version is a fast
moving target which gets _overwritten_ on every new release.

Conflicts:
	pkgs/top-level/all-packages.nix
2014-04-21 10:00:35 +02:00

120 lines
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source $stdenv/setup
mkdir $out
mkdir $out/bin
mkdir $out/nix-support
# Force gcc to use ld-wrapper.sh when calling ld.
cflagsCompile="-B$out/bin/"
if test -z "$nativeLibc"; then
cflagsCompile="$cflagsCompile -B$gccLibs/lib -B$libc/lib/ -isystem $libc/include"
ldflags="$ldflags -L$libc/lib"
# Get the proper dynamic linker for glibc and uclibc.
dlinker=`eval 'echo $libc/lib/ld*.so.?'`
if [ -n "$dlinker" ]; then
ldflagsBefore="-dynamic-linker $dlinker"
# The same as above, but put into files, useful for the gcc builder.
echo $dlinker > $out/nix-support/dynamic-linker
# This trick is to avoid dependencies on the cross-toolchain gcc
# for libgcc, libstdc++, ...
# -L is for libtool's .la files, and -rpath for the usual fixupPhase
# shrinking rpaths.
if [ -n "$gccLibs" ]; then
ldflagsBefore="$ldflagsBefore -rpath $gccLibs/lib"
fi
fi
if [ -n "$osxMinVersion" ]; then
cflagsCompile="$cflagsCompile -mmacosx-version-min=$osxMinVersion"
fi
echo "$cflagsCompile -B$libc/lib/ -idirafter $libc/include -idirafter $gcc/lib/gcc/*/*/include-fixed" > $out/nix-support/libc-cflags
echo "-L$libc/lib -rpath $libc/lib -rpath-link $libc/lib" > $out/nix-support/libc-ldflags
# The dynamic linker is passed in `ldflagsBefore' to allow
# explicit overrides of the dynamic linker by callers to gcc/ld
# (the *last* value counts, so ours should come first).
echo "$ldflagsBefore" > $out/nix-support/libc-ldflags-before
fi
if test -n "$nativeTools"; then
gccPath="$nativePrefix/bin"
ldPath="$nativePrefix/bin"
else
ldflags="$ldflags -L$gcc/lib -L$gcc/lib64"
gccPath="$gcc/bin"
ldPath="$binutils/$crossConfig/bin"
fi
doSubstitute() {
local src=$1
local dst=$2
substitute "$src" "$dst" \
--subst-var "out" \
--subst-var "shell" \
--subst-var "gcc" \
--subst-var "gccProg" \
--subst-var "binutils" \
--subst-var "libc" \
--subst-var "cflagsCompile" \
--subst-var "cflagsLink" \
--subst-var "ldflags" \
--subst-var "ldflagsBefore" \
--subst-var "ldPath" \
--subst-var-by "ld" "$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 $out/bin/$crossConfig-gcc $gccPath/$crossConfig-gcc
#ln -s gcc $out/bin/cc
mkGccWrapper $out/bin/$crossConfig-g++ $gccPath/$crossConfig-g++
ln -s $crossConfig-g++ $out/bin/$crossConfig-c++
mkGccWrapper $out/bin/$crossConfig-cpp $gccPath/$crossConfig-cpp
mkGccWrapper $out/bin/$crossConfig-g77 $gccPath/$crossConfig-g77
ln -s $crossConfig-g77 $out/bin/$crossConfig-f77
ln -s $binutils/bin/$crossConfig-ar $out/bin/$crossConfig-ar
ln -s $binutils/bin/$crossConfig-as $out/bin/$crossConfig-as
ln -s $binutils/bin/$crossConfig-nm $out/bin/$crossConfig-nm
ln -s $binutils/bin/$crossConfig-strip $out/bin/$crossConfig-strip
# Make a wrapper around the linker.
doSubstitute "$ldWrapper" "$out/bin/$crossConfig-ld"
chmod +x "$out/bin/$crossConfig-ld"
# Emit a setup hook. Also store the path to the original GCC and
# Glibc.
test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
test -n "$libc" && echo $libc > $out/nix-support/orig-libc
doSubstitute "$addFlags" "$out/nix-support/add-flags"
doSubstitute "$setupHook" "$out/nix-support/setup-hook"
cp -p $utils $out/nix-support/utils