fix: only generate metadata for the targeted arch (#236)

Author: rigor789

metadata-generator/build-step-metadata-generator.py

@@ -174,5 +174,11 @@ def generate_metadata(arch):
 
 
 for arch in env("ARCHS").split():
+    # skip metadata generation for architectures different than the one specified in the command line
+    # in case the command line argument is not specified, generate metadata for all architectures
+    if len(sys.argv) >= 2 and sys.argv[1].lower() != arch.lower():
+        print("Skipping metadata generation for " + arch)
+        continue
+
     print("Generating metadata for " + arch)
     generate_metadata(arch)

project-template/internal/nsld.sh

@@ -44,17 +44,19 @@ function GEN_MODULEMAP() {
 }
 
 function GEN_METADATA() {
+    TARGET_ARCH=$1
     set -e
     cpu_arch=$(uname -m)
     pushd "$SRCROOT/internal/metadata-generator-${cpu_arch}/bin"
-    ./build-step-metadata-generator.py
+    ./build-step-metadata-generator.py $TARGET_ARCH
     popd
 }
 
 # Workaround for ARCH being set to `undefined_arch` here. Extract it from command line arguments.
-GEN_MODULEMAP $(getArch "$@")
+TARGET_ARCH=$(getArch "$@")
+GEN_MODULEMAP $TARGET_ARCH
 printf "Generating metadata..."
-GEN_METADATA
+GEN_METADATA $TARGET_ARCH
 DELETE_SWIFT_MODULES_DIR
 NS_LD="${NS_LD:-"$TOOLCHAIN_DIR/usr/bin/clang"}"
 $NS_LD "$@"