-exec_program("rm -f simgrid_units_main.c *_unit.c ${PROJECT_DIRECTORY}/src/simgrid_units_main.c ${PROJECT_DIRECTORY}/src/*_unit.c" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
-
-#$(TEST_UNITS): $(TEST_CFILES)
-string(REPLACE ";" " " TEST_CFILES "${TEST_CFILES}")
-exec_program("${PROJECT_DIRECTORY}/tools/sg_unit_extractor.pl ${TEST_CFILES}" "${PROJECT_DIRECTORY}/src/")
-
-#@builddir@/simgrid_units_main.c: $(TEST_UNITS)
-exec_program("${PROJECT_DIRECTORY}/tools/sg_unit_extractor.pl ${PROJECT_DIRECTORY}/src/xbt/cunit.c" "${PROJECT_DIRECTORY}/src/")
-
-#clean-units:
-foreach(file ${TEST_UNITS})
- exec_program("echo ${file}|sed -e 's|.c$$|.Po|' -e 's|[^/]*/||' -e 's|^|.deps/|'" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE dep)
- exec_program("echo \"Removing dependency tracker of ${file} (${dep} ${PROJECT_DIRECTORY}/src/${dep})\"" OUTPUT_VARIABLE OKITOKI)
- message("${OKITOKI}")
- exec_program("rm -vf ${dep} ${PROJECT_DIRECTORY}/src/${dep}" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
- exec_program("touch ${dep}" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
-endforeach(file ${TEST_UNITS})
-
+if(PERL_EXE)
+ exec_program("rm -f simgrid_units_main.c *_unit.c ${PROJECT_DIRECTORY}/src/simgrid_units_main.c ${PROJECT_DIRECTORY}/src/*_unit.c" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
+
+ #$(TEST_UNITS): $(TEST_CFILES)
+ string(REPLACE ";" " " TEST_CFILES "${TEST_CFILES}")
+ exec_program("${PROJECT_DIRECTORY}/tools/sg_unit_extractor.pl ${TEST_CFILES}" "${PROJECT_DIRECTORY}/src/")
+
+ #@builddir@/simgrid_units_main.c: $(TEST_UNITS)
+ exec_program("${PROJECT_DIRECTORY}/tools/sg_unit_extractor.pl ${PROJECT_DIRECTORY}/src/xbt/cunit.c" "${PROJECT_DIRECTORY}/src/")
+
+ #clean-units:
+ foreach(file ${TEST_UNITS})
+ exec_program("echo ${file}|sed -e 's|.c$$|.Po|' -e 's|[^/]*/||' -e 's|^|.deps/|'" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE dep)
+ exec_program("echo \"Removing dependency tracker of ${file} (${dep} ${PROJECT_DIRECTORY}/src/${dep})\"" OUTPUT_VARIABLE OKITOKI)
+ message("${OKITOKI}")
+ exec_program("rm -vf ${dep} ${PROJECT_DIRECTORY}/src/${dep}" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
+ exec_program("touch ${dep}" "${PROJECT_DIRECTORY}/src/" OUTPUT_VARIABLE OKITOKI)
+ endforeach(file ${TEST_UNITS})
+else(PERL_EXE)
+ message(" PERL : ${PERL_EXE}")
+ message(FATAL_ERROR "Install perl before use maintainer mode")
+endif(PERL_EXE)