exec_program("${CMAKE_CXX_COMPILER} ${GTNETS_CPPFLAGS} ${GTNETS_LDFLAGS} ${PROJECT_DIRECTORY}/CPACK/prog_test/prog_gtnets.cpp" OUTPUT_VARIABLE COMPILE_GTNETS_VAR)
if(COMPILE_GTNETS_VAR)
SET(HAVE_GTNETS 0)
+ message(FATAL_ERROR "GTnetS doesn't works : set -Ddisable_gtnets=on")
else(COMPILE_GTNETS_VAR)
SET(HAVE_GTNETS 1)
set(INCLUDES