Add script to build clang-tools.
Test: OUT_DIR=out ./build-prebuilts.sh succeeds; $OUT_DIR contains built
binaries of clang based tools.
Bug: 72504455
Change-Id: I854ce0fc7b151fe64062b6c9f960ca805817771c
diff --git a/build-prebuilts.sh b/build-prebuilts.sh
new file mode 100755
index 0000000..f8dab86
--- /dev/null
+++ b/build-prebuilts.sh
@@ -0,0 +1,62 @@
+#!/bin/bash -ex
+
+if [ -z "${OUT_DIR}" ]; then
+ echo Must set OUT_DIR
+ exit 1
+fi
+
+TOP=$(pwd)
+
+UNAME="$(uname)"
+case "$UNAME" in
+Linux)
+ OS='linux'
+ ;;
+Darwin)
+ OS='darwin'
+ ;;
+*)
+ exit 1
+ ;;
+esac
+
+# ckati and makeparallel (Soong)
+SOONG_OUT=${OUT_DIR}/soong
+SOONG_HOST_OUT=${OUT_DIR}/soong/host/${OS}-x86
+rm -rf ${SOONG_OUT}
+mkdir -p ${SOONG_OUT}
+cat > ${SOONG_OUT}/soong.variables << EOF
+{
+ "Allow_missing_dependencies": true,
+ "HostArch":"x86_64",
+ "HostSecondaryArch":"x86"
+}
+EOF
+SOONG_BINARIES=(
+ header-abi-linker
+ header-abi-dumper
+ header-abi-diff
+ merge-abi-diff
+)
+
+binaries=$(for i in "${SOONG_BINARIES[@]}"; do echo ${SOONG_HOST_OUT}/bin/${i}; done)
+
+# Build everything
+build/soong/soong_ui.bash --make-mode --skip-make \
+ ${binaries}
+
+# Copy arch-specific binaries
+mkdir -p ${SOONG_OUT}/dist/bin
+cp ${binaries} ${SOONG_OUT}/dist/bin/
+cp -R ${SOONG_HOST_OUT}/lib* ${SOONG_OUT}/dist/
+
+# Package arch-specific prebuilts
+(
+ cd ${SOONG_OUT}/dist
+ zip -qryX build-prebuilts.zip *
+)
+
+if [ -n "${DIST_DIR}" ]; then
+ mkdir -p ${DIST_DIR} || true
+ cp ${SOONG_OUT}/dist/build-prebuilts.zip ${DIST_DIR}/
+fi