Allow to ignore certain macros from CI check

This allows to list macros that should be excluded
from the CI check (for instance if they require symbols not usually available
within the O2 software stack).

Author: sawenzel

CMakeLists.txt

@@ -16,6 +16,7 @@ FOREACH (p
     CMP0042 # CMake 3.0
     CMP0028
     CMP0068
+    CMP0057
     )
   IF (POLICY ${p})
     cmake_policy(SET ${p} NEW)
@@ -203,6 +204,12 @@ IF($ENV{ALIBUILD_O2_TESTS})
   SET(CHECK_ROOTMACRO_COMPILE 1)
 ENDIF()
 
+# A LIST OF MACROS TO EXCLUDE FROM THE TEST
+#  To be used only in exceptional cases, such as when the macro
+#  uses symbols from outside the standard O2 build/runtime
+#  environment.
+SET(IGNORE_MACROS)
+
 # UNIT TESTS VERIFYING CONSISTENT STATE OF OUR ROOT MACROS AND THE EXECUTION ENVIRONMENT
 if(CHECK_ROOTMACRO_COMPILE AND HAVESIMULATION)
   # On Mac OS GLOB_RECURSE returns both .C and .c files, i.e. case insensitive
@@ -211,14 +218,18 @@ if(CHECK_ROOTMACRO_COMPILE AND HAVESIMULATION)
   LIST(FILTER MACRO_FILES INCLUDE REGEX "^.*\\.C$")
   SET(TEST_NO 0)
   FOREACH(MACRO_FILE ${MACRO_FILES})
-    string(REPLACE ${CMAKE_SOURCE_DIR} "" MACRO_FILE_LABEL ${MACRO_FILE})
-    MATH(EXPR TEST_NO "${TEST_NO} + 1")
-    ADD_TEST(NAME ${MACRO_FILE_LABEL}
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-      COMMAND root -n -b -l -q -e ".L ${MACRO_FILE}"
-    )
-    SET_PROPERTY(TEST ${MACRO_FILE_LABEL} PROPERTY ENVIRONMENT "LD_LIBRARY_PATH=$ENV{LD_LIBRARY_PATH}:${CMAKE_BINARY_DIR}/lib")
-    SET_PROPERTY(TEST ${MACRO_FILE_LABEL} APPEND PROPERTY ENVIRONMENT "DYLD_LIBRARY_PATH=$ENV{DYLD_LIBRARY_PATH}:${CMAKE_BINARY_DIR}/lib")
-    SET_PROPERTY(TEST ${MACRO_FILE_LABEL} APPEND PROPERTY ENVIRONMENT "ROOT_HIST=0")
+    IF(NOT ${MACRO_FILE} IN_LIST IGNORE_MACROS)
+      string(REPLACE ${CMAKE_SOURCE_DIR} "" MACRO_FILE_LABEL ${MACRO_FILE})
+      MATH(EXPR TEST_NO "${TEST_NO} + 1")
+      ADD_TEST(NAME ${MACRO_FILE_LABEL}
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        COMMAND root -n -b -l -q -e ".L ${MACRO_FILE}"
+      )
+      SET_PROPERTY(TEST ${MACRO_FILE_LABEL} PROPERTY ENVIRONMENT "LD_LIBRARY_PATH=$ENV{LD_LIBRARY_PATH}:${CMAKE_BINARY_DIR}/lib")
+      SET_PROPERTY(TEST ${MACRO_FILE_LABEL} APPEND PROPERTY ENVIRONMENT "DYLD_LIBRARY_PATH=$ENV{DYLD_LIBRARY_PATH}:${CMAKE_BINARY_DIR}/lib")
+      SET_PROPERTY(TEST ${MACRO_FILE_LABEL} APPEND PROPERTY ENVIRONMENT "ROOT_HIST=0")
+    ELSE()
+      MESSAGE(STATUS "EXCLUDING ROOT MACRO ${MACRO_FILE} FROM CHECK")
+    ENDIF()
   ENDFOREACH()
 endif()