ci: Do not check Geant3 on macos

It looks like Geant3 fails always on macos.
So disable it even in branch builds on macos.

Co-authored-by: @dennisklein

Author: ChristianTackeGSI

FairRoot_build_test.cmake

@@ -46,9 +46,8 @@ endif()
 if (USE_CLANG_TIDY)
   list(APPEND options "-DCMAKE_CXX_CLANG_TIDY=clang-tidy")
 endif()
-if ("$ENV{CHANGE_ID}" STREQUAL "")
-  # Branch build
-  list(APPEND options "-DENABLE_GEANT3_TESTING:BOOL=ON")
+if (ENABLE_GEANT3_TESTING)
+  list(APPEND options "-DENABLE_GEANT3_TESTING=ON")
 endif()
 ctest_configure(OPTIONS "${options}")
 

Jenkinsfile

@@ -36,7 +36,11 @@ def linux_checks = [
   [os: 'ubuntu', ver: 'rolling', compiler: 'current', fairsoft: 'dev', check: 'doxygen'],
 ]
 
-if (env.CHANGE_ID != null) { // only run checks for PRs
+def isBranchBuild() {
+  return !env.CHANGE_ID
+}
+
+if (!isBranchBuild()) { // PRs only
   linux_checks += [
     [os: "ubuntu", ver: "rolling", compiler: "current", fairsoft: "dev",  check: "format"]
   ]
@@ -95,6 +99,9 @@ def jobMatrix(String type, String src, List specs) {
             ctestcmd = "ctest -S ${sourcedir}/FairRoot_${check}_test.cmake -VV"
             sh "echo \"export FAIRROOT_FORMAT_BASE=origin/\${CHANGE_TARGET}\" >> ${jobscript}"
           }
+          if (isBranchBuild() && !(os =~ /^macos/)) {
+            ctestcmd += " -DENABLE_GEANT3_TESTING=ON"
+          }
           if (extra) {
             ctestcmd = ctestcmd + " " + extra
           }