build: update Makefile to support fat binary

build a binary that is both x86_64 and arm64 on macos

Author: Ash Cripps

Makefile

@@ -982,12 +982,26 @@ $(PKG): release-only
 | sed -E "s/\\{npmversion\\}/$(NPMVERSION)/g" \
 >$(MACOSOUTDIR)/installer/productbuild/Resources/$$lang/conclusion.html ; \
 done
+CC_host="cc -arch x86_64" CXX_host="c++ -arch x86_64" \
+CC_target="cc -arch x86_64" CXX_target="c++ -arch x86_64" \
+CC="cc -arch x86_64" CXX="c++ -arch x86_64" $(PYTHON) ./configure \
+--dest-cpu=x86_64 \
+--tag=$(TAG) \
+--release-urlbase=$(RELEASE_URLBASE) \
+$(CONFIG_FLAGS) $(BUILD_RELEASE_FLAGS)
+arch -x86_64 $(MAKE) install V=$(V) DESTDIR=$(MACOSOUTDIR)/dist/x64/node
+SIGN="$(CODESIGN_CERT)" PKGDIR="$(MACOSOUTDIR)/dist/node/usr/local" sh \
+tools/osx-codesign.sh
 $(PYTHON) ./configure \
---dest-cpu=x64 \
+--dest-cpu=arm64 \
 --tag=$(TAG) \
 --release-urlbase=$(RELEASE_URLBASE) \
 $(CONFIG_FLAGS) $(BUILD_RELEASE_FLAGS)
-$(MAKE) install V=$(V) DESTDIR=$(MACOSOUTDIR)/dist/node
+$(MAKE) install V=$(V) DESTDIR=$(MACOSOUTDIR)/dist/arm64/node
+lipo $(MACOSOUTDIR)/dist/x64/node \
+$(MACOSOUTDIR)/dist/arm64/node \
+-output $(MACOSOUTDIR)/dist/node \
+-create
 SIGN="$(CODESIGN_CERT)" PKGDIR="$(MACOSOUTDIR)/dist/node/usr/local" sh \
 tools/osx-codesign.sh
 mkdir -p $(MACOSOUTDIR)/dist/npm/usr/local/lib/node_modules