ensure standard functions mk[sd]temp don't depend on removed function mktemp

src/temp/mkdtemp.c

@@ -1,4 +1,3 @@
-#define _GNU_SOURCE
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -9,10 +8,12 @@
 #include <sys/stat.h>
 #include "libc.h"
 
+char *__mktemp(char *);
+
 char *mkdtemp(char *template)
 {
 	for (;;) {
-		if (!mktemp(template)) return 0;
+		if (!__mktemp(template)) return 0;
 		if (!mkdir(template, 0700)) return template;
 		if (errno != EEXIST) return 0;
 		/* this is safe because mktemp verified

src/temp/mkstemp.c

@@ -1,4 +1,3 @@
-#define _GNU_SOURCE
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -8,11 +7,13 @@
 #include <errno.h>
 #include "libc.h"
 
+char *__mktemp(char *);
+
 int mkstemp(char *template)
 {
 	int fd;
 retry:
-	if (!mktemp(template)) return -1;
+	if (!__mktemp(template)) return -1;
 	fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);
 	if (fd >= 0) return fd;
 	if (errno == EEXIST) {

src/temp/mktemp.c

@@ -6,7 +6,7 @@
 #include <errno.h>
 #include "libc.h"
 
-char *mktemp(char *template)
+char *__mktemp(char *template)
 {
 	static int lock;
 	static int index;
@@ -27,3 +27,5 @@ char *mktemp(char *template)
 	UNLOCK(&lock);
 	return NULL;	
 }
+
+weak_alias(__mktemp, mktemp);