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-rw-r--r--libc/sysdeps/linux/common/bits/uClibc_pthread.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/bits/uClibc_pthread.h b/libc/sysdeps/linux/common/bits/uClibc_pthread.h
index ab26ae9e8..3d25ac4e8 100644
--- a/libc/sysdeps/linux/common/bits/uClibc_pthread.h
+++ b/libc/sysdeps/linux/common/bits/uClibc_pthread.h
@@ -27,7 +27,7 @@
# error "Always include <pthread.h> rather than <bits/uClibc_pthread.h>"
#endif
-#ifdef _LIBC
+#if defined _LIBC && (defined IS_IN_libc || defined NOT_IN_libc)
extern int __pthread_mutex_init (pthread_mutex_t *__restrict __mutex,
__const pthread_mutexattr_t *__restrict __mutex_attr) attribute_hidden;
extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex) attribute_hidden;