nixpkgs/pkgs/build-support/bintools-wrapper/setup-hook.sh
John Ericson 330ca731e8 treewide: Get rid of all uses of crossConfig
The hack of using `crossConfig` to enforce stricter handling of
dependencies is replaced with a dedicated `strictDeps` for that purpose.
(Experience has shown that my punning was a terrible idea that made more
difficult and embarrising to teach teach.)

Now that is is clear, a few packages now use `strictDeps`, to fix
various bugs:

 - bintools-wrapper and cc-wrapper
2018-05-14 23:30:37 -04:00

89 lines
2.2 KiB
Bash

# Binutils Wrapper hygiene
#
# See comments in cc-wrapper's setup hook. This works exactly the same way.
set -u
# Skip setup hook if we're neither a build-time dep, nor, temporarily, doing a
# native compile.
#
# TODO(@Ericson2314): No native exception
[[ -z ${strictDeps-} ]] || (( "$hostOffset" < 0 )) || return 0
bintoolsWrapper_addLDVars () {
case $depHostOffset in
-1) local role='BUILD_' ;;
0) local role='' ;;
1) local role='TARGET_' ;;
*) echo "bintools-wrapper: Error: Cannot be used with $depHostOffset-offset deps" >2;
return 1 ;;
esac
if [[ -d "$1/lib64" && ! -L "$1/lib64" ]]; then
export NIX_${role}LDFLAGS+=" -L$1/lib64"
fi
if [[ -d "$1/lib" ]]; then
export NIX_${role}LDFLAGS+=" -L$1/lib"
fi
}
case $targetOffset in
-1)
export NIX_BINTOOLS_WRAPPER_@infixSalt@_TARGET_BUILD=1
role_pre='BUILD_'
role_post='_FOR_BUILD'
;;
0)
export NIX_BINTOOLS_WRAPPER_@infixSalt@_TARGET_HOST=1
role_pre=''
role_post=''
;;
1)
export NIX_BINTOOLS_WRAPPER_@infixSalt@_TARGET_TARGET=1
role_pre='TARGET_'
role_post='_FOR_TARGET'
;;
*)
echo "cc-wrapper: used as improper sort of dependency" >2;
return 1
;;
esac
addEnvHooks "$targetOffset" bintoolsWrapper_addLDVars
# shellcheck disable=SC2157
if [ -n "@bintools_bin@" ]; then
addToSearchPath _PATH @bintools_bin@/bin
fi
# shellcheck disable=SC2157
if [ -n "@libc_bin@" ]; then
addToSearchPath _PATH @libc_bin@/bin
fi
# shellcheck disable=SC2157
if [ -n "@coreutils_bin@" ]; then
addToSearchPath _PATH @coreutils_bin@/bin
fi
# Export tool environment variables so various build systems use the right ones.
export NIX_${role_pre}BINTOOLS=@out@
for cmd in \
ar as ld nm objcopy objdump readelf ranlib strip strings size windres
do
if
PATH=$_PATH type -p "@targetPrefix@${cmd}" > /dev/null
then
upper_case="$(echo "$cmd" | tr "[:lower:]" "[:upper:]")"
export "${role_pre}${upper_case}=@targetPrefix@${cmd}";
export "${upper_case}${role_post}=@targetPrefix@${cmd}";
fi
done
# No local scope in sourced file
unset -v role_pre role_post cmd upper_case
set +u