-# if USE_VALGRIND == 1
-ifeq (${USE_VALGRIND},1)
- CFLAGS+=-DUSE_VALGRIND
- SSTRING_ENGINE=valgrind
-
-## if SSTRING_NEW == 1
-ifeq (${SSTRING_NEW},1)
- IMPOSSIBLE="USE_VALGRIND and SSTRING_NEW"
-endif # SSTRING_NEW == 1
-
-## if SSTRING_MMAP == 1
-ifeq (${SSTRING_MMAP},1)
- IMPOSSIBLE="USE_VALGRIND and SSTRING_MMAP"
-endif ## SSTRING_MMAP == 1
-else # USE_VALGRIND == 1
-
-## if SSTRING_NEW == 1
-ifeq (${SSTRING_NEW},1)
- SSTRING_ENGINE=new
-else ## SSTRING_NEW == 1
- SSTRING_ENGINE=old
-
-### if SSTRING_MMAP == 1
-ifeq (${SSTRING_MMAP},1)
- IMPOSSIBLE="SSTRING_MMAP without SSTRING_NEW"
-endif ### SSTRING_MMAP == 1
-endif ## SSTRING_NEW == 1
-endif # USE_VALGRIND == 1
-
-ifdef IMPOSSIBLE
-$(error impossible combination of settings: ${IMPOSSIBLE})
-endif
-