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set -ex
hide_output() {
set +x
on_err="
echo ERROR: An error was encountered with the build.
cat /tmp/build.log
exit 1
"
trap "$on_err" ERR
bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
PING_LOOP_PID=$!
$@ &> /tmp/build.log
trap - ERR
kill $PING_LOOP_PID
rm /tmp/build.log
set -x
}
TAG=$1
shift
export CFLAGS="-fPIC $CFLAGS"
MUSL=musl-1.1.20
# may have been downloaded in a previous run
if [ ! -d $MUSL ]; then
curl https://www.musl-libc.org/releases/$MUSL.tar.gz | tar xzf -
fi
cd $MUSL
./configure --enable-optimize --enable-debug --disable-shared --prefix=/musl-$TAG $@
if [ "$TAG" = "i586" -o "$TAG" = "i686" ]; then
hide_output make -j$(nproc) AR=ar RANLIB=ranlib
else
hide_output make -j$(nproc)
fi
hide_output make install
hide_output make clean
cd ..
LLVM=70
# may have been downloaded in a previous run
if [ ! -d libunwind-release_$LLVM ]; then
curl -L https://github.com/llvm-mirror/llvm/archive/release_$LLVM.tar.gz | tar xzf -
curl -L https://github.com/llvm-mirror/libunwind/archive/release_$LLVM.tar.gz | tar xzf -
fi
mkdir libunwind-build
cd libunwind-build
cmake ../libunwind-release_$LLVM \
-DLLVM_PATH=/build/llvm-release_$LLVM \
-DLIBUNWIND_ENABLE_SHARED=0 \
-DCMAKE_C_COMPILER=$CC \
-DCMAKE_CXX_COMPILER=$CXX \
-DCMAKE_C_FLAGS="$CFLAGS" \
-DCMAKE_CXX_FLAGS="$CXXFLAGS"
hide_output make -j$(nproc)
cp lib/libunwind.a /musl-$TAG/lib
cd ../ && rm -rf libunwind-build
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