Make: Support Apple Silicon in Universal Build

[sanssecours]

👋 Hi,

this pull request adds Apple Silicon support to the Makefile for universal Mac builds. If I should change anything in the pull request, then please just comment below. Thank you.

---

BTW: Is there an easy way to only install the static version of the library? I was able to build the static version of GLEW with:

make -C auto
export MACOSX_DEPLOYMENT_TARGET=10.9 GLEW_DEST=/usr/local
make SYSTEM=darwin-universal glew.lib.static

However, installing the library with:

sudo make install

failed with the following error message on my machine:

install -d -m 0755 "/usr/local/include/GL"
install -m 0644 include/GL/wglew.h "/usr/local/include/GL/"
install -m 0644 include/GL/glew.h "/usr/local/include/GL/"
install -m 0644 include/GL/glxew.h "/usr/local/include/GL/"
install -m 0644 include/GL/eglew.h "/usr/local/include/GL/"
cc -DGLEW_NO_GLU -DGLEW_BUILD -Os -Wall -W -Iinclude -dynamic -fno-common -pedantic -fPIC -std=c89  -o tmp/darwin/default/shared/glew.o -c src/glew.c
cc -dynamiclib -install_name /usr/local/lib/libGLEW.2.2.0.dylib -current_version 2.2.0 -compatibility_version 2.2 -o lib/libGLEW.2.2.0.dylib tmp/darwin/default/shared/glew.o  -framework OpenGL
ln -sf libGLEW.2.2.0.dylib lib/libGLEW.2.2.dylib
ln -sf libGLEW.2.2.0.dylib lib/libGLEW.dylib
strip -x lib/libGLEW.2.2.0.dylib
sed \
        -e "s|@prefix@|/usr/local|g" \
        -e "s|@libdir@|/usr/local/lib|g" \
        -e "s|@exec_prefix@|/usr/local/bin|g" \
        -e "s|@includedir@|/usr/local/include/GL|g" \
        -e "s|@version@|2.2.0|g" \
        -e "s|@cflags@||g" \
        -e "s|@libname@|GLEW|g" \
        -e "s|@libgl@|-framework OpenGL|g" \
        -e "s|@requireslib@||g" \
        < glew.pc.in > glew.pc
cc -DGLEW_NO_GLU -DGLEW_STATIC -Os -Wall -W -Iinclude -dynamic -fno-common -pedantic -fPIC -std=c89  -o tmp/darwin/default/static/glew.o -c src/glew.c
ar rv lib/libGLEW.a tmp/darwin/default/static/glew.o
ar: lib/libGLEW.a is a fat file (use libtool(1) or lipo(1) and ar(1) on it)
ar: lib/libGLEW.a: Inappropriate file type or format
make: *** [lib/libGLEW.a] Error 1

For now I just used the following commands as workaround:

sudo make install.include
sudo cp lib/libGLEW.a /usr/local/lib

[nigels-com]

Looks good, makes sense.

[nigels-com]

Does this work as expected?

sudo make SYSTEM=darwin-universal install

[sanssecours]

Does this work as expected?

sudo make SYSTEM=darwin-universal install

The command above fails with a linker error on my machine:

install -d -m 0755 "/usr/local/include/GL"
install -m 0644 include/GL/wglew.h "/usr/local/include/GL/"
install -m 0644 include/GL/glew.h "/usr/local/include/GL/"
install -m 0644 include/GL/glxew.h "/usr/local/include/GL/"
install -m 0644 include/GL/eglew.h "/usr/local/include/GL/"
mkdir lib
cc -DGLEW_NO_GLU -DGLEW_BUILD -Os -Wall -W -Iinclude -dynamic -fno-common -pedantic -fPIC -arch i386 -arch x86_64 -arch arm64 -std=c89  -o tmp/darwin-universal/default/shared/glew.o -c src/glew.c
cc -dynamiclib -install_name /usr/local/lib/libGLEW.2.2.0.dylib -current_version 2.2.0 -compatibility_version 2.2 -o lib/libGLEW.2.2.0.dylib tmp/darwin-universal/default/shared/glew.o -arch i386 -arch x86_64 -arch arm64 -framework OpenGL
ld: warning: The i386 architecture is deprecated for macOS (remove from the Xcode build setting: ARCHS)
ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks//OpenGL.framework/OpenGL.tbd, missing required architecture i386 in file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks//OpenGL.framework/OpenGL.tbd (3 slices)
ld: warning: ignoring file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libSystem.tbd, missing required architecture i386 in file /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/lib/libSystem.tbd (3 slices)
Undefined symbols for architecture i386:
  "___bzero", referenced from:
      _glewContextInit in glew.o
  "___stack_chk_fail", referenced from:
      _glewContextInit in glew.o
  "___stack_chk_guard", referenced from:
      _glewContextInit in glew.o
  "_dlopen", referenced from:
      _NSGLGetProcAddress in glew.o
  "_dlsym", referenced from:
      _NSGLGetProcAddress in glew.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [lib/libGLEW.2.2.0.dylib] Error 1

[nigels-com]

Ah, looks like it's time to retire i386 from the universal build.

[sanssecours]

Ah, looks like it's time to retire i386 from the universal build.

I removed the flags for the i386 architecture in the latest commit. Installing the library with

sudo make SYSTEM=darwin-universal install

now works on my machine.