eb326c9cb7
cctool's as needs to be told use to use gnu as, or else we'd need a dependency cycle between cctools and clang for this case. In general, this is not a problem because clang uses its own integrated assembler where possible, and gnu as otherwise.
108 lines
3.3 KiB
Bash
108 lines
3.3 KiB
Bash
#! @shell@
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set -eu -o pipefail
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path_backup="$PATH"
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if [ -n "@coreutils_bin@" ]; then
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PATH="@coreutils_bin@/bin"
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fi
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declare -r recurThreshold=300
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declare overflowCount=0
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for ((n=0; n < $#; ++n)); do
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case "${!n}" in
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-l*) let overflowCount+=1 ;;
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-reexport-l*) let overflowCount+=1 ;;
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*) ;;
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esac
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done
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declare -a allArgs=()
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if (( "$overflowCount" <= "$recurThreshold" )); then
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allArgs=("$@")
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else
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declare -a childrenLookup=() childrenLink=()
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while (( $# )); do
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case "$1" in
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-L/*)
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childrenLookup+=("$1")
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allArgs+=("$1")
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;;
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-L)
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echo "cctools LD does not support '-L foo' or '-l foo'" >&2
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exit 1
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;;
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-l)
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echo "cctools LD does not support '-L foo' or '-l foo'" >&2
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exit 1
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;;
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-lazy_library | -lazy_framework | -lto_library)
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# We aren't linking any "azy_library", "to_library", etc.
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allArgs+=("$1")
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;;
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-lazy-l | -weak-l) allArgs+=("$1") ;;
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# We can't so easily prevent header issues from these.
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-lSystem) allArgs+=("$1") ;;
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# Special case as indirection seems like a bad idea for something
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# so fundamental. Can be removed for simplicity.
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-l?* | -reexport-l?*) childrenLink+=("$1") ;;
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*) allArgs+=("$1") ;;
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esac
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shift
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done
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declare n=0
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while (( $n < "${#childrenLink[@]}" )); do
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if [[ "${childrenLink[n]}" = -l* ]]; then
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childrenLink[n]="-reexport${childrenLink[n]}"
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fi
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let ++n
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done
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unset n
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declare -r outputNameLibless=$(basename $( \
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if [[ -z "${outputName:+isUndefined}" ]]; then
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echo unnamed
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elif [[ "${outputName:0:3}" = lib ]]; then
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echo "${outputName:3}"
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else
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echo "${outputName}"
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fi))
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declare -ra children=("$outputNameLibless-reexport-delegate-0" \
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"$outputNameLibless-reexport-delegate-1")
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mkdir -p "$out/lib"
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PATH="$PATH:@out@/bin"
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symbolBloatObject=$outputNameLibless-symbol-hack.o
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if [[ ! -e $symbolBloatObject ]]; then
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# `-Q` means use GNU Assembler rather than Clang, avoiding an awkward
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# dependency cycle.
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printf '.private_extern _______child_hack_foo\nchild_hack_foo:\n' \
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| @binPrefix@as -Q -- -o $symbolBloatObject
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fi
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# first half of libs
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@binPrefix@ld -macosx_version_min $MACOSX_DEPLOYMENT_TARGET -arch x86_64 -dylib \
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-o "$out/lib/lib${children[0]}.dylib" \
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-install_name "$out/lib/lib${children[0]}.dylib" \
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"${childrenLookup[@]}" "$symbolBloatObject" \
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"${childrenLink[@]:0:$((${#childrenLink[@]} / 2 ))}"
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# second half of libs
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@binPrefix@ld -macosx_version_min $MACOSX_DEPLOYMENT_TARGET -arch x86_64 -dylib \
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-o "$out/lib/lib${children[1]}.dylib" \
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-install_name "$out/lib/lib${children[1]}.dylib" \
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"${childrenLookup[@]}" "$symbolBloatObject" \
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"${childrenLink[@]:$((${#childrenLink[@]} / 2 ))}"
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allArgs+=("-L$out/lib" "-l${children[0]}" "-l${children[1]}")
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fi
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PATH="$path_backup"
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exec @prog@ "${allArgs[@]}"
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