build_openroad: fix quoting issue

Now things like the below work:

./build_openroad.sh --local --latest --openroad-args '-D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_CXX_FLAGS="-O0 -g"'

Signed-off-by: Øyvind Harboe <[email protected]>

Author: oharboe

build_openroad.sh

@@ -275,7 +275,7 @@ __local_build()
         ${NICE} make install -C tools/yosys -j "${PROC}" ${YOSYS_ARGS}
 
         echo "[INFO FLW-0018] Compiling OpenROAD."
-        ${NICE} cmake tools/OpenROAD -B tools/OpenROAD/build ${OPENROAD_APP_ARGS}
+        ${NICE} cmake tools/OpenROAD -B tools/OpenROAD/build "${OPENROAD_APP_ARGS}"
         ${NICE} cmake --build tools/OpenROAD/build --target install -j "${PROC}"
 
         if [ ! -z "${LSORACLE_ENABLE+x}" ]; then