Merge branch 'tribits_github_snapshot' into atdv-241-skip-nonowning-i…

…nstall-base-dir (ATDV-241)

Avoids trying to change the group or permissions on a base install dir you
don't own.  (See TriBITSPub/TriBITS#314)

cmake/tribits/core/installation/set_installed_group_and_permissions.cmake.in

@@ -11,7 +11,9 @@ SET(projectSubdirPathsArray "@PROJECT_SUBDIR_PATHS_ARRAY@")
 SET(PROJECT_MAKE_INSTALL_GROUP "@PROJECT_MAKE_INSTALL_GROUP@")
 SET(PROJECT_MAKE_INSTALL_PERMS_CHANGE "@PROJECT_MAKE_INSTALL_PERMS_CHANGE@")
 
+#
 # Helper functions
+#
 
 SET(CHMOD_CHGRP_IDX 0)
 
@@ -26,25 +28,43 @@ ENDFUNCTION()
 
 FUNCTION(SET_DIR_OWNER_AND_PERMS  dirPath  recurseFlag)
 
-  IF (NOT "${PROJECT_MAKE_INSTALL_GROUP}" STREQUAL "")
-    ECHO_AND_RUN_CMND(
-      chgrp ${PROJECT_MAKE_INSTALL_GROUP} ${recurseFlag} "${dirPath}")
-  ENDIF()
+  EXECUTE_PROCESS(COMMAND stat -c %U "${dirPath}"
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    OUTPUT_VARIABLE  dirOwner)
+
+  IF (NOT "${dirOwner}" STREQUAL "${CURRENT_USER_RUNNING_INSTALL}")
+
+    MESSAGE(STATUS "${CHMOD_CHGRP_IDX}: NOTE: Not calling chgrp and chmod on ${dirPath} since owner '${dirOwner}' != current owner '${CURRENT_USER_RUNNING_INSTALL}'!")
+
+  ELSE()
+
+    IF (NOT "${PROJECT_MAKE_INSTALL_GROUP}" STREQUAL "")
+      ECHO_AND_RUN_CMND(
+        chgrp ${PROJECT_MAKE_INSTALL_GROUP} ${recurseFlag} "${dirPath}")
+    ENDIF()
+
+    IF (NOT "${PROJECT_MAKE_INSTALL_PERMS_CHANGE}" STREQUAL "")
+      ECHO_AND_RUN_CMND(
+        chmod ${PROJECT_MAKE_INSTALL_PERMS_CHANGE} ${recurseFlag} "${dirPath}")
+    ENDIF()
 
-  IF (NOT "${PROJECT_MAKE_INSTALL_PERMS_CHANGE}" STREQUAL "")
-    ECHO_AND_RUN_CMND(
-      chmod ${PROJECT_MAKE_INSTALL_PERMS_CHANGE} ${recurseFlag} "${dirPath}")
   ENDIF()
 
   MATH(EXPR CHMOD_CHGRP_IDX "${CHMOD_CHGRP_IDX}+1")
   SET(CHMOD_CHGRP_IDX ${CHMOD_CHGRP_IDX} PARENT_SCOPE)
 
 ENDFUNCTION()
 
+#
 # Executable script
+#
 
 IF (EXISTS "${projectInstallBaseDir}")
 
+  EXECUTE_PROCESS(COMMAND whoami
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    OUTPUT_VARIABLE  CURRENT_USER_RUNNING_INSTALL)
+
   LIST(LENGTH projectSubdirPathsArray numSubDirs)
 
   # Get projectSubdirPathsArrayLessOne and CMAKE_INSTALL_PREFIX