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nixpkgs/pkgs/build-support/gcc-wrapper/builder.sh
Eelco Dolstra e6744d0f89 * Merge diff between trunk/pkgs@1646 and branches/nixos-pkgs@2256;
this contains mostly Armijn's pure stdenv-linux.

* After unpacking the statically linked GCC, patch all store paths to
  /nix/store/ffffffffffffffffffffffffffffffff.  Ugly hack to prevent
  undeclared references but it works.

* We don't need Glib's dynamic libraries in the first bootstrap stage;
  delete them.  Actually the downloaded Glibc binary is only needed
  for building Glibc, since GCC needs a C compiler to build some
  programs in `configure'.  So static linking is fine for that.  Maybe
  it would be better to patch `configure' so that we don't need a
  pre-built Glibc at all.

* Set the svn:executable property on `cp' and `patchelf'.

* In Glibc, revert to LinuxThreads.  Maybe NPTL will work, but TLS
  support is a problem.

* Delete most Glibc patches; they're no longer needed since the branch
  updated it to 20050110.
  
* Some cleanups.

svn path=/nixpkgs/trunk/; revision=2258
2005-02-21 16:03:34 +00:00

91 lines
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. $stdenv/setup
# Force gcc to use ld-wrapper.sh when calling ld.
cflagsCompile="-B$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
mkGccWrapper () {
local dst=$1
local src=$2
if ! test -f "$src"; then
echo "$src does not exist (skipping)"
return
fi
sed \
-e "s^@gcc@^$src^g" \
-e "s^@out@^$out^g" \
-e "s^@shell@^$shell^g" \
< $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 $out/bin/f77
sed \
-e "s^@out@^$out^g" \
-e "s^@ldflags@^$ldflags^g" \
-e "s^@ldflagsBefore@^$ldflagsBefore^g" \
-e "s^@ld@^$ldPath/ld^g" \
-e "s^@shell@^$shell^g" \
< $ldWrapper > $out/bin/ld
chmod +x $out/bin/ld
mkdir $out/nix-support
test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
test -n "$glibc" && echo $glibc > $out/nix-support/orig-glibc
cat > $out/nix-support/add-flags <<EOF
export NIX_CFLAGS_COMPILE="$cflagsCompile \$NIX_CFLAGS_COMPILE"
export NIX_CFLAGS_LINK="$cflagsLink \$NIX_CFLAGS_LINK"
export NIX_LDFLAGS="$ldflags \$NIX_LDFLAGS"
export NIX_LDFLAGS_BEFORE="$ldflagsBefore \$NIX_LDFLAGS_BEFORE"
export NIX_GLIBC_FLAGS_SET=1
#export GCC_EXEC_PREFIX=$gcc/libexec/gcc/i686-pc-linux-gnu/3.4.3
EOF
sed \
-e "s^@gcc@^$gcc^g" \
-e "s^@binutils@^$binutils^g" \
-e "s^@glibc@^$glibc^g" \
< $setupHook > $out/nix-support/setup-hook
cp -p $utils $out/nix-support/utils