Try to fix a compil issue in qa test

qa/common/CMakeLists.txt

@@ -51,7 +51,7 @@ set( common_srcs
     view/test_zoom_controller.cpp
 )
 
-set( common_libs 
+set( common_libs
     common
     legacy_gal
     polygon
@@ -62,6 +62,11 @@ set( common_libs
     ${wxWidgets_LIBRARIES}
 )
 
+# test_shape_arc.cpp does not compile without -fpermissive compil option:
+if( CMAKE_COMPILER_IS_GNUCXX )
+    set( CMAKE_CXX_FLAGS "-fpermissive ${CMAKE_CXX_FLAGS}" )
+endif()
+
 
 # Use code with GERBVIEW defines in place (primarily IU difference)
 add_executable( qa_common_gerbview ${common_srcs} )