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source $stdenv/setup
export NIX_FIXINC_DUMMY=$NIX_BUILD_TOP/dummy
mkdir $NIX_FIXINC_DUMMY
# libstdc++ needs this; otherwise it will use /lib/cpp, which is a Bad
# Thing.
export CPP="gcc -E"
if test "$staticCompiler" = "1"; then
EXTRA_LDFLAGS="-static"
else
EXTRA_LDFLAGS=""
fi
if test "$noSysDirs" = "1"; then
if test -e $NIX_GCC/nix-support/orig-libc; then
# Figure out what extra flags to pass to the gcc compilers
# being generated to make sure that they use our glibc.
extraCFlags="$(cat $NIX_GCC/nix-support/libc-cflags)"
extraLDFlags="$(cat $NIX_GCC/nix-support/libc-ldflags) $(cat $NIX_GCC/nix-support/libc-ldflags-before)"
# Use *real* header files, otherwise a limits.h is generated
# that does not include Glibc's limits.h (notably missing
# SSIZE_MAX, which breaks the build).
export NIX_FIXINC_DUMMY=$(cat $NIX_GCC/nix-support/orig-libc)/include
# The path to the Glibc binaries such as `crti.o'.
glibc_libdir="$(cat $NIX_GCC/nix-support/orig-libc)/lib"
else
# Hack: support impure environments.
extraCFlags="-isystem /usr/include"
extraLDFlags="-L/usr/lib64 -L/usr/lib"
glibc_libdir="/usr/lib"
export NIX_FIXINC_DUMMY=/usr/include
fi
# Setting $CPATH makes sure both `gcc' and `xgcc' find the C
# library headers, regarless of the language being compiled.
export CPATH="$NIX_FIXINC_DUMMY:$gmp/include:$mpfr/include"
# Likewise, to help it find `crti.o' and similar files.
export LIBRARY_PATH="$glibc_libdir"
extraCFlags="-g0 $extraCFlags"
extraLDFlags="--strip-debug $extraLDFlags"
for i in $extraLDFlags; do
export EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,$i"
done
makeFlagsArray=( \
"${makeFlagsArray[@]}" \
NATIVE_SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \
SYSTEM_HEADER_DIR="$NIX_FIXINC_DUMMY" \
LIMITS_H_TEST=true \
X_CFLAGS="$extraCflags $EXTRA_LDFLAGS" \
LDFLAGS="$extraCflags $EXTRA_LDFLAGS" \
LDFLAGS_FOR_TARGET="$extraCflags $EXTRA_LDFLAGS" \
)
fi
preConfigure() {
# Perform the build in a different directory.
mkdir ../build
cd ../build
configureScript=../$sourceRoot/configure
}
postInstall() {
# Remove precompiled headers for now. They are very big and
# probably not very useful yet.
find $out/include -name "*.gch" -exec rm -rf {} \; -prune
# Remove `fixincl' to prevent a retained dependency on the
# previous gcc.
rm -rf $out/libexec/gcc/*/*/install-tools
rm -rf $out/lib/gcc/*/*/install-tools
# Get rid of some "fixed" header files
rm -rf $out/lib/gcc/*/*/include/root
# Replace hard links for i686-pc-linux-gnu-gcc etc. with symlinks.
for i in $out/bin/*-gcc*; do
if cmp -s $out/bin/gcc $i; then
ln -sfn gcc $i
fi
done
for i in $out/bin/*-c++* $out/bin/*-g++*; do
if cmp -s $out/bin/g++ $i; then
ln -sfn g++ $i
fi
done
}
if test -z "$profiledCompiler"; then
buildFlags="bootstrap $buildFlags"
else
buildFlags="profiledbootstrap $buildFlags"
fi
genericBuild
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