Linux: Don't fail if glib is missing if we don't need it #84293

Job	Run time
Build framework (macos-release, -sdk macosx -configuration Release)	11m 19s
Build framework (macos-release, -sdk macosx -configuration Release)	11m 19s
Build framework (ios-release, -sdk iphoneos -configuration Release)	7m 36s
Build framework (ios-release, -sdk iphoneos -configuration Release)	7m 36s
Build framework (tvos-debug, -sdk appletvos -configuration Debug)	7m 39s
Build framework (tvos-debug, -sdk appletvos -configuration Debug)	7m 39s
Build framework (watchos-debug, -sdk watchos -configuration Debug)	13m 55s
Build framework (watchos-debug, -sdk watchos -configuration Debug)	13m 55s
Run framework tests (asan, -enableAddressSanitizer YES -enableUndefinedBehaviorSanitizer YES)	35m 26s
Run framework tests (asan, -enableAddressSanitizer YES -enableUndefinedBehaviorSanitizer YES)	32m 51s
Run framework tests (tsan, -enableThreadSanitizer YES)	23m 21s
Run framework tests (tsan, -enableThreadSanitizer YES)	23m 21s
Run framework tests (leaks, ENABLE_LEAK_DETECTION=1)	23m 8s
Run framework tests (leaks, ENABLE_LEAK_DETECTION=1)	23m 8s
	4h 2m 13s

Provide feedback