v12: Make sure GEOSgcm.x exists for copy#740

sdrabenh merged 3 commits intofeature/sdrabenh/gcm_v12GEOS-ESM/GEOSgcm_App:feature/sdrabenh/gcm_v12from

bugfix/crash-when-no-exec-v12GEOS-ESM/GEOSgcm_App:bugfix/crash-when-no-exec-v12Copy head branch name to clipboard