Merge pull request #45 from eisenhauer/FFIAgain

Don't look for FFI or try to build if NATIVE_ONLY is on

CMakeLists.txt

@@ -200,7 +200,7 @@ endif()
 if(LIBFFI_FOUND)
   message(STATUS "Enabling emulation")
   set(EMULATION_POSSIBLE TRUE)
-elseif(DILL_IGNORE_NATIVE OR (NATIVE_ARCH STREQUAL "UNSUPPORTED"))
+elseif((DILL_IGNORE_NATIVE OR (NATIVE_ARCH STREQUAL "UNSUPPORTED")) AND NOT DILL_NATIVE_ONLY)
   find_program (AUTOCONF autoconf)
   find_program (AUTOMAKE automake)
   if ((AUTOCONF STREQUAL "AUTOCONF-NOTFOUND") OR (AUTOMAKE STREQUAL "AUTOMAKE-NOTFOUND"))
@@ -342,7 +342,6 @@ check_include_files(memory.h HAVE_MEMORY_H)
 check_include_files(sys/mman.h HAVE_SYS_MMAN_H)
 include(CheckSymbolExists)
 check_symbol_exists(__clear_cache "" CLEAR_CACHE_DEFINED)
-message(STATUS "Clear cache defined is ${CLEAR_CACHE_DEFINED}")
 
 set(NO_DISASSEMBLER TRUE)
 if(DILL_ENABLE_DISASSEMBLY)