filesystem: wscript: check d_type field in struct dirent, as this is …

…an extension and some supported ports (like psvita) don't have it

filesystem/filesystem.c

@@ -261,9 +261,10 @@ void listdirectory( stringlist_t *list, const char *path, qboolean dirs_only )
 	// iterate through the directory
 	while(( entry = readdir( dir )))
 	{
-		// FIXME: this is a BSD extension, add check to wscript
+#if HAVE_DIRENT_D_TYPE
 		if( dirs_only && entry->d_type != DT_DIR && entry->d_type != DT_UNKNOWN )
 			continue;
+#endif
 
 		stringlistappend( list, entry->d_name );
 	}

filesystem/wscript

@@ -4,6 +4,11 @@ MEMFD_CREATE_TEST = '''#define _GNU_SOURCE
 #include <sys/mman.h>
 int main(int argc, char **argv) { return memfd_create(argv[0], 0); }'''
 
+DIRENT_D_TYPE_TEST = '''#define _GNU_SOURCE
+#include <dirent.h>
+int main(int argc, char **argv) { struct dirent entry; entry.d_type = DT_DIR; return 0; }
+'''
+
 def options(opt):
 	pass
 
@@ -18,6 +23,9 @@ def configure(conf):
 	if conf.check_cc(fragment=MEMFD_CREATE_TEST, msg='Checking for memfd_create', mandatory=False):
 		conf.define('HAVE_MEMFD_CREATE', 1)
 
+	if conf.check_cc(fragment=DIRENT_D_TYPE_TEST, msg='Checking for d_type field in struct dirent', mandatory=False):
+		conf.define('HAVE_DIRENT_D_TYPE', 1)
+
 def build(bld):
 	bld(name = 'filesystem_includes', export_includes = '.')