options: fnmatch: check existence instead of posix

options/m_config.c

@@ -29,7 +29,6 @@
 #include <stdbool.h>
 #include <pthread.h>
 
-#define HAVE_FNMATCH HAVE_POSIX
 #if HAVE_FNMATCH
 #include <fnmatch.h>
 #endif

wscript

@@ -127,6 +127,10 @@ main_dependencies = [
         # This should be good enough.
         'func': check_statement(['poll.h', 'unistd.h', 'sys/mman.h'],
             'struct pollfd pfd; poll(&pfd, 1, 0); fork(); int f[2]; pipe(f); munmap(f,0)'),
+    }, {
+        'name': 'fnmatch',
+        'desc': 'fnmatch()',
+        'func': check_statement('fnmatch.h', 'fnmatch("", "", 0)')
     }, {
         'name': 'posix-or-mingw',
         'desc': 'development environment',