0026854: Use -Wextra with GCC

Added option -Wextra for GCC compilation

diff --git a/adm/cmake/occt_defs_flags.cmake b/adm/cmake/occt_defs_flags.cmake
index 8232afb40ec6d0f049f9c876048b42bd159c75d1..6dd762fb8f3d86b276f83868857057ce02c30889 100644 (file)
--- a/adm/cmake/occt_defs_flags.cmake
+++ b/adm/cmake/occt_defs_flags.cmake
@@ -75,7 +75,7 @@ endif()
 # generate a single response file which enlist all of the object files
 SET(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
 SET(CMAKE_CXX_USE_RESPONSE_FILE_FOR_OBJECTS 1)
-# increase compiler warnings level (-W4 for MSVC, -Wall for GCC)
+# increase compiler warnings level (-W4 for MSVC, -Wextra for GCC)
 if (MSVC)
   if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
     string (REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
@@ -83,7 +83,7 @@ if (MSVC)
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
   endif()
 elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
 endif()
 
 if (DEFINED CMAKE_COMPILER_IS_GNUCXX OR "x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")