2 files changed, 8 insertions, 2 deletions
diff --git a/test/stdlib/Makefile.in b/test/stdlib/Makefile.in
index b0c724af2..135db6b33 100644
--- a/test/stdlib/Makefile.in
+++ b/test/stdlib/Makefile.in
@@ -6,6 +6,7 @@ DODIFF_testatexit  := 1
 DODIFF_teston_exit := 1
 DODIFF_teststrtol  := 1
 
-ifeq ($(ARCH_USE_MMU),)
-TESTS_DISABLED := test-mkostemp-O_CLOEXEC
+TESTS_DISABLED :=
+ifeq ($(UCLIBC_HAS_PTY),)
+TESTS_DISABLED += ptytest
 endif
diff --git a/test/stdlib/test-mkostemp-O_CLOEXEC.c b/test/stdlib/test-mkostemp-O_CLOEXEC.c
index 5652086bd..9ff229af1 100644
--- a/test/stdlib/test-mkostemp-O_CLOEXEC.c
+++ b/test/stdlib/test-mkostemp-O_CLOEXEC.c
@@ -1,3 +1,4 @@
+#define _XOPEN_SOURCE_EXTENDED
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -8,6 +9,10 @@
 #include <sys/wait.h>
 #include <errno.h>
 
+#if !defined __ARCH_USE_MMU__
+# define fork vfork
+#endif
+
 int main(int argc, char *argv[]) {
     int fd, status;
     char buff[5];