Base support for llvm / c loader macos.

Author: viferga

tools/metacall-environment.sh

@@ -686,7 +686,6 @@ sub_c(){
 			$SUDO_CMD apt-get install -y --no-install-recommends libffi-dev libclang-${LLVM_VERSION_STRING}-dev
 		elif [ "${LINUX_DISTRO}" = "alpine" ]; then
 			$SUDO_CMD apk add --no-cache libffi-dev
-			$SUDO_CMD apk add --no-cache --repository=https://dl-cdn.alpinelinux.org/alpine/edge/testing tcc
 			$SUDO_CMD apk add --no-cache --repository=https://dl-cdn.alpinelinux.org/alpine/v3.16/main clang-libs=13.0.1-r1 clang-dev=13.0.1-r1
 		fi
 	elif [ "${OPERATIVE_SYSTEM}" = "Darwin" ]; then

tools/metacall-runtime.sh

@@ -252,10 +252,10 @@ sub_java(){
 # C
 sub_c(){
 	echo "configure c"
+	cd $ROOT_DIR
+	LLVM_VERSION_STRING=14
 
 	if [ "${OPERATIVE_SYSTEM}" = "Linux" ]; then
-		LLVM_VERSION_STRING=14
-
 		if [ "${LINUX_DISTRO}" = "debian" ]; then
 			UBUNTU_CODENAME=""
 			CODENAME_FROM_ARGUMENTS=""
@@ -293,9 +293,19 @@ sub_c(){
 			sub_apt_install_hold libffi libclang-${LLVM_VERSION_STRING}
 		elif [ "${LINUX_DISTRO}" = "ubuntu" ]; then
 			sub_apt_install_hold libffi libclang-${LLVM_VERSION_STRING}
+		elif [ "${LINUX_DISTRO}" = "alpine" ]; then
+			$SUDO_CMD apk add --no-cache libffi-dev
+			$SUDO_CMD apk add --no-cache --repository=https://dl-cdn.alpinelinux.org/alpine/v3.16/main clang-libs=13.0.1-r1 clang-dev=13.0.1-r1
 		fi
-
-		# TODO: Implement Alpine and Darwin
+	elif [ "${OPERATIVE_SYSTEM}" = "Darwin" ]; then
+		brew install libffi
+		brew install llvm@$LLVM_VERSION_STRING
+		brew link llvm@$LLVM_VERSION_STRING --force --overwrite
+		mkdir -p "$ROOT_DIR/build"
+		CMAKE_CONFIG_PATH="$ROOT_DIR/build/CMakeConfig.txt"
+		LIBCLANG_PREFIX=$(brew --prefix llvm@$LLVM_VERSION_STRING)
+		echo "-DLibClang_INCLUDE_DIR=${LIBCLANG_PREFIX}/include" >> $CMAKE_CONFIG_PATH
+		echo "-DLibClang_LIBRARY=${LIBCLANG_PREFIX}/lib/libclang.dylib" >> $CMAKE_CONFIG_PATH
 	fi
 }