Do not override existing CMake function names

Also, quote args (not sure if that has an effect)

Author: greenrobot

test/integration/cmake/projects/test-cmake-generators.cmake

@@ -24,11 +24,12 @@ if(NO_PREBUILT)
   set(extraFlags "-DNO_PREBUILT=1")
 endif()
 
-# overload execute_process: Exit on cperror code.
-function(execute_process)
-  _execute_process(${ARGV} RESULT_VARIABLE error)
-  if(error)
-    message(FATAL_ERROR "")
+# Execute process and fail on error (via RESULT_VARIABLE).
+# COMMAND_ERROR_IS_FATAL is an alternative but requires CMake 3.19+
+function(execute_process_fail_on_error)
+  execute_process(${ARGV} RESULT_VARIABLE _execute_error)
+  if(_execute_error)
+    message(FATAL_ERROR "Failed with exit code ${_execute_error}: ${ARGV}")
   endif()
 endfunction()
 
@@ -74,12 +75,12 @@ function(configureAndBuild multi generator)
             message(STATUS "-------------------------------------------------------")
             message(STATUS "**** Test Generator: ${generator} with test project '${project}' and variant '${variant}'.")
             message(STATUS "-------------------------------------------------------")
-            execute_process(COMMAND ${CMAKE_COMMAND} -S ${srcdir} -B ${builddir} -G ${generator} ${configureFlags} ${extraFlags})
+            execute_process_fail_on_error(COMMAND ${CMAKE_COMMAND} -S "${srcdir}" -B "${builddir}" -G "${generator}" ${configureFlags} ${extraFlags})
             if (multi)
-                execute_process(COMMAND ${CMAKE_COMMAND} --build ${builddir} --config Release)
-                execute_process(COMMAND ${CMAKE_COMMAND} --build ${builddir} --config Debug)
+                execute_process_fail_on_error(COMMAND ${CMAKE_COMMAND} --build "${builddir}" --config Release)
+                execute_process_fail_on_error(COMMAND ${CMAKE_COMMAND} --build "${builddir}" --config Debug)
             else()
-                execute_process(COMMAND ${CMAKE_COMMAND} --build ${builddir})
+                execute_process_fail_on_error(COMMAND ${CMAKE_COMMAND} --build "${builddir}")
             endif()
         endforeach()
     endforeach()