Packaging: write our own meson crossfile for appleOS

We need to set CFLAGS that are not transfered through the regular prozess.

extras/package/apple/build.sh

@@ -409,6 +409,46 @@ write_config_mak()
     vlcSetSymbolEnvironment ac_var_to_export_ac_var >&3
 }
 
+# Write crossfile.meson for contribs
+# Globals:
+#   VLC_HOST_CC
+#   VLC_HOST_CXX
+#   VLC_HOST_AR
+#   VLC_HOST_STRIP
+#   VLC_APPLE_SDK_PATH
+#   VLC_HOST_ARCH
+write_crossfile_meson()
+{
+    local meson_host_arch=$VLC_HOST_ARCH
+    if [ $meson_host_arch = "arm64" ]; then
+        meson_host_arch="aarch64"
+    fi
+    echo "Creating crossfile.meson..."
+    test -e crossfile.meson && unlink crossfile.meson
+    exec 3>crossfile.meson || return $?
+
+    printf "# This file was automatically generated by the appleOS build script!\n\n" >&3
+    printf "[binaries]\n" >&3
+    printf "c = ['%s', '-arch', '%s', '-isysroot', '%s']\n" "${VLC_HOST_CC}" "$VLC_HOST_ARCH" "$VLC_APPLE_SDK_PATH"  >&3
+    printf "cpp = ['%s', '-arch', '%s', '-isysroot', '%s']\n" "${VLC_HOST_CC}" "$VLC_HOST_ARCH" "$VLC_APPLE_SDK_PATH"  >&3
+    printf "objc = ['%s', '-arch', '%s', '-isysroot', '%s']\n" "${VLC_HOST_CC}" "$VLC_HOST_ARCH" "$VLC_APPLE_SDK_PATH"  >&3
+    printf "objcpp = ['%s', '-arch', '%s', '-isysroot', '%s']\n" "${VLC_HOST_CC}" "$VLC_HOST_ARCH" "$VLC_APPLE_SDK_PATH"  >&3
+    printf "ar = ['%s']\n" "${VLC_HOST_AR}" >&3
+    printf "strip = ['%s']\n" "${VLC_HOST_STRIP}" >&3
+    printf "pkgconfig = 'pkg-config'\n" >&3
+    printf "windres = 'windres'\n" >&3
+    printf "\n[properties]\n" >&3
+    printf "needs_exe_wrapper = true\n" >&3
+    printf "\n[host_machine]\n" >&3
+    printf "system = 'darwin'\n" >&3
+    printf "cpu_family = '%s'\n" "${meson_host_arch}" >&3
+    printf "endian = 'little'\n" >&3
+    printf "cpu = '%s'\n"  "${meson_host_arch}" >&3
+    printf "\n[cmake]\n" >&3
+    printf "CMAKE_C_COMPILER = '%s'\n" "${VLC_HOST_CC}" >&3
+    printf "CMAKE_CXX_COMPILER = '%s'\n" "${VLC_HOST_CXX}" >&3
+}
+
 # Generate the source file with the needed array for
 # the static VLC module list. This has to be compiled
 # and linked into the static library
@@ -620,6 +660,9 @@ mkdir -p "$VLC_CONTRIB_INSTALL_DIR"
 # Set flag to error on partial availability
 write_config_mak "-Werror=partial-availability"
 
+# Write crossfile-meson with flags for the build and compiler overrides
+write_crossfile_meson
+
 if [ "$VLC_USE_BITCODE" -gt "0" ]; then
     VLC_CONTRIB_OPTIONS+=( "--enable-bitcode" )
 fi