Handle HAVE_MEMSET variable in the new cmake file

config/CMakeChecks.txt

@@ -85,7 +85,6 @@ check_include_file( "sys/mman.h" HAVE_SYS_MMAN_H )
 check_include_file( "process.h" HAVE_PROCESS_H )
 check_include_file( "regex.h" HAVE_REGEX )
 
-check_function_exists( memset HAVE_MEMSET )
 check_function_exists( mmap HAVE_MMAP )
 check_function_exists( munmap HAVE_MUNMAP )
 check_function_exists( realloc HAVE_REALLOC )
@@ -124,8 +123,7 @@ IF( NOT MSVC )
     SET( HAVE_PID_T TRUE )
 ENDIF( NOT MSVC )
 
-SET( EXV_SYMBOLS HAVE_MEMSET
-                 HAVE_MMAP
+SET( EXV_SYMBOLS HAVE_MMAP
                  HAVE_MUNMAP
                  HAVE_PRINTUCS2
                  HAVE_PROCESS_H

config/config.h.cmake

@@ -56,8 +56,8 @@
 // Definition to indicate you have the <memory.h> header file.
 #cmakedefine EXV_HAVE_MEMORY_H
 
-/* Define to 1 if you have the `memset' function. */
-#cmakedefine EXV_HAVE_MEMSET 1
+// Definition to indicate if you have the `memset' function.
+#cmakedefine EXV_HAVE_MEMSET
 
 /* Define to 1 if your system has a GNU libc compatible `realloc' function,
    and to 0 otherwise. */

config/generateConfigFile.cmake

@@ -16,6 +16,7 @@ set(EXV_HAVE_LIBZ        ${ZLIB_FOUND})
 
 # TODO: Try to use the cmake function check_symbol_exists which is more robust
 check_function_exists( gmtime_r EXV_HAVE_GMTIME_R )
+check_function_exists( memset   EXV_HAVE_MEMSET )
 
 # TODO: This check should be removed and rely on the check done in findDependencies.cmake
 check_include_file( "libintl.h" EXV_HAVE_LIBINTL_H )