COMMON_CC=""
[ "$IS_MAC" = "true" -a "$2" != "wasm" ] && COMMON_CC="$COMMON_CC --target=$TARGET_STRING -mcpu=$LDK_TARGET_CPU"
[ "$IS_MAC" = "false" -a "$2" != "wasm" ] && COMMON_CC="$COMMON_CC --target=$TARGET_STRING -march=$LDK_TARGET_CPU -mtune=$LDK_TARGET_CPU"
COMMON_CC=""
[ "$IS_MAC" = "true" -a "$2" != "wasm" ] && COMMON_CC="$COMMON_CC --target=$TARGET_STRING -mcpu=$LDK_TARGET_CPU"
[ "$IS_MAC" = "false" -a "$2" != "wasm" ] && COMMON_CC="$COMMON_CC --target=$TARGET_STRING -march=$LDK_TARGET_CPU -mtune=$LDK_TARGET_CPU"