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60 lines
1.8 KiB
Bash
60 lines
1.8 KiB
Bash
#!/usr/bin/bash -eu
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# Initial version:
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# https://src.fedoraproject.org/rpms/redhat-rpm-config/blob/rawhide/f/brp-llvm-compile-lto-elf
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CLANG_FLAGS=$@
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if test -z $P_TO_LLVM; then
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echo "P_TO_LLVM isn't set"
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exit 1
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fi
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if test -z $NJOBS; then
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echo "NJOBS isn't set"
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exit 1
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fi
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if test -z $VERSION; then
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echo "VERSION isn't set"
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exit 1
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fi
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NCPUS=$NJOBS
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check_convert_bitcode () {
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local file_name=$(realpath ${1})
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local file_type=$(file ${file_name})
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shift
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CLANG_FLAGS="$@"
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if [[ "${file_type}" == *"LLVM IR bitcode"* ]]; then
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# check for an indication that the bitcode was
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# compiled with -flto
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${P_TO_LLVM}/debian/tmp/usr/bin/llvm-bcanalyzer-${VERSION} -dump ${file_name} | grep -xP '.*\-flto((?!-fno-lto).)*' 2>&1 > /dev/null
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if [ $? -eq 0 ]; then
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echo "Compiling LLVM bitcode file ${file_name}."
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${P_TO_LLVM}/debian/tmp/usr/bin/clang-${VERSION} -fno-lto -opaque-pointers -Wno-unused-command-line-argument \
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-x ir ${file_name} -c -o ${file_name}
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fi
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elif [[ "${file_type}" == *"current ar archive"* ]]; then
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echo "Unpacking ar archive ${file_name} to check for LLVM bitcode components."
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# create archive stage for objects
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local archive_stage=$(mktemp -d)
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local archive=${file_name}
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pushd ${archive_stage}
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ar x ${archive}
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for archived_file in $(find -not -type d); do
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check_convert_bitcode ${archived_file} ${CLANG_FLAGS}
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echo "Repacking ${archived_file} into ${archive}."
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${P_TO_LLVM}/debian/tmp/usr/bin/llvm-ar-${VERSION} r ${archive} ${archived_file}
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done
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popd
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fi
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}
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echo "Checking for LLVM bitcode artifacts"
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export -f check_convert_bitcode
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find "$P_TO_LLVM/debian/" -type f -name "*.[ao]" -print0 | \
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xargs -0 -r -n1 -P$NCPUS bash -c "check_convert_bitcode \$@ $CLANG_FLAGS" ARG0
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