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Build Linux libc++ configs #35

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Merged
jonathonpenix merged 1 commit into from
Dec 23, 2025
Merged

Build Linux libc++ configs #35

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57 changes: 54 additions & 3 deletions qualcomm-software/embedded/scripts/build.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ Usage:
Options:
--artifact-dir <path> Directory to copy final tarball
--skip-tests Skip LLVM test steps
--arm-sysroot <path> Arm sysroot (default: /usr/arm-linux-gnueabi)
--aarch64-sysroot <path> AArch64 sysroot (default: /usr/aarch64-linux-gnu)
--clean Delete and recreate build/install dirs

Expand All @@ -56,7 +57,8 @@ while [[ $# -gt 0 ]]; do
case "$1" in
--artifact-dir) ARTIFACT_DIR="$2"; shift 2 ;;
--skip-tests) SKIP_TESTS="true"; shift ;;
--aarch64-sysroot) AARCH64_SYSROOT="$2"; shift 2 ;;
--arm-sysroot) ARM32_SYSROOT_OPT="$2"; shift 2 ;;
--aarch64-sysroot) AARCH64_SYSROOT_OPT="$2"; shift 2 ;;
--clean) CLEAN="true"; shift ;;
-h|--help) usage; exit 0 ;;
*) echo "Unknown arg: $1"; usage; exit 1 ;;
Expand All @@ -68,10 +70,12 @@ BUILD_MODE="Release"
ASSERTION_MODE="OFF"
ARM32_LINUX_TRIPLE="arm-linux-gnueabi"
AARCH64_LINUX_TRIPLE="aarch64-linux-gnu"
ARM32_SYSROOT="${ARM32_SYSROOT_OPT:-/usr/arm-linux-gnueabi}"
AARCH64_SYSROOT="${AARCH64_SYSROOT_OPT:-/usr/aarch64-linux-gnu}"
COMPILER_RT_ARM32_LINUX_BUILDDIR="${WORKSPACE}/build/compiler-rt/arm32/linux"
COMPILER_RT_AARCH64_LINUX_BUILDDIR="${WORKSPACE}/build/compiler-rt/aarch64/linux"
COMPILER_RT_ARM32_LINUX_FLAGS="--target=arm-linux-gnueabi -mcpu=cortex-a9 -mfloat-abi=softfp -mfpu=neon"
COMPILER_RT_AARCH64_LINUX_FLAGS="--sysroot=${AARCH64_SYSROOT:-/usr/aarch64-linux-gnu} --target=aarch64-linux-gnu -mcpu=cortex-a53"
COMPILER_RT_AARCH64_LINUX_FLAGS="--sysroot=${AARCH64_SYSROOT} --target=aarch64-linux-gnu -mcpu=cortex-a53"
ARM32_BM_TRIPLE="arm-none-eabi"
AARCH64_BM_TRIPLE="aarch64-none-elf"
COMPILER_RT_ARM32_BM_BUILDDIR="${WORKSPACE}/build/compiler-rt/arm32/baremetal"
Expand Down Expand Up @@ -290,6 +294,7 @@ done
# --- c++ libs ---
echo "Build c++ libs ..."

# Baremetal libc++ configs
declare -A Triples
Triples["aarch64-none-elf"]="aarch64-none-elf"
Triples["aarch64-pacret-b-key-bti-none-elf"]="aarch64-none-elf"
Expand Down Expand Up @@ -342,8 +347,54 @@ for VARIANT in "aarch64-none-elf" "aarch64-pacret-b-key-bti-none-elf" "armv7-non
ninja
ninja install
popd >/dev/null
echo "c++ libs install ..."
echo "Baremetal C++ libs install ..."
done

# Linux libc++ configs
declare -A LINUX_TRIPLES
LINUX_TRIPLES["aarch64-linux-gnu"]="aarch64-linux-gnu"
LINUX_TRIPLES["aarch64-pacret-linux-gnu"]="aarch64-linux-gnu"
LINUX_TRIPLES["aarch64-pacret-bti-linux-gnu"]="aarch64-linux-gnu"
LINUX_TRIPLES["armv7-linux-gnueabi"]="armv7-linux-gnueabi"
declare -A LINUX_CFLAGS
LINUX_CFLAGS["aarch64-linux-gnu"]="-mcpu=cortex-a53"
LINUX_CFLAGS["aarch64-pacret-linux-gnu"]="-mcpu=cortex-a53 -march=armv8.3a -mbranch-protection=pac-ret+leaf"
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@navaneethshan navaneethshan Dec 18, 2025

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Aren't "armv8.3-a" the right AArch64 variant name? (is the hypen missing?)

LINUX_CFLAGS["aarch64-pacret-bti-linux-gnu"]="-mcpu=cortex-a53 -march=armv8.3a -mbranch-protection=pac-ret+leaf+bti"
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@navaneethshan navaneethshan Dec 18, 2025

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Same here.

LINUX_CFLAGS["armv7-linux-gnueabi"]="-mcpu=cortex-a9 -mfloat-abi=softfp -mfpu=neon"
for VARIANT in "${!LINUX_TRIPLES[@]}"; do
TRIPLE="${LINUX_TRIPLES[${VARIANT}]}"
SYSROOT="${AARCH64_SYSROOT}"
if [[ "${TRIPLE}" = "armv7-linux-gnueabi" ]]; then
SYSROOT="${ARM32_SYSROOT}"
fi
MUSL_INC="${INSTALL_DIR}/${TRIPLE}/libc/include"
CMAKE_CFLAGS="--target=${TRIPLE} -nostdlib -nostdinc -isystem ${MUSL_INC} -isystem ${SYSROOT}/include -ccc-gcc-name ${TRIPLE}-g++ -ffunction-sections -fdata-sections -D_GNU_SOURCE ${LINUX_CFLAGS[${VARIANT}]}"
mkdir -p "${BUILD_DIR}/${VARIANT}"
pushd "${BUILD_DIR}/${VARIANT}" >/dev/null
cmake -G Ninja -S "${SRC_DIR}/runtimes" \
-DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}/${VARIANT}" \
-DCMAKE_BUILD_TYPE="Release" \
-DCMAKE_C_COMPILER="clang" \
-DCMAKE_CXX_COMPILER="clang++" \
-DCMAKE_SYSTEM_NAME="Linux" \
-DCMAKE_C_FLAGS_RELEASE="${CFLAGS_RELEASE}" \
-DCMAKE_CXX_FLAGS_RELEASE="${CFLAGS_RELEASE}" \
-DCMAKE_C_FLAGS="${CMAKE_CFLAGS}" \
-DCMAKE_CXX_FLAGS="${CMAKE_CFLAGS}" \
-DCMAKE_ASM_FLAGS="${CMAKE_CFLAGS}" \
-DLIBCXX_ENABLE_SHARED="False" \
-DLIBCXX_HAS_MUSL_LIBC="True" \
-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT="False" \
-DLIBCXXABI_USE_LLVM_UNWINDER="True" \
-DLIBCXXABI_ENABLE_SHARED="False" \
-DLIBCXXABI_ENABLE_WERROR="True" \
-DLIBUNWIND_ENABLE_SHARED="False" \
-DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind"
ninja install
popd >/dev/null
echo "Linux C++ libs install ..."
done

echo "Build and installation complete."

# --- Create artifact ---
Expand Down
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