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-rw-r--r--include/unistd.h15
1 files changed, 10 insertions, 5 deletions
diff --git a/include/unistd.h b/include/unistd.h
index 0ee0e922..e6bf2ca7 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -37,16 +37,23 @@ extern "C" {
#include <bits/alltypes.h>
int pipe(int [2]);
-int pipe2(int [2], int);
int close(int);
-int posix_close(int, int);
int dup(int);
int dup2(int, int);
-int dup3(int, int, int);
off_t lseek(int, off_t, int);
int fsync(int);
int fdatasync(int);
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 > 700) \
+ || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 > 200809L)
+int pipe2(int [2], int);
+int dup3(int, int, int);
+int posix_close(int, int);
+
+#define POSIX_CLOSE_RESTART 0
+#endif
+
ssize_t read(int, void *, size_t);
ssize_t write(int, const void *, size_t);
ssize_t pread(int, void *, size_t, off_t);
@@ -208,8 +215,6 @@ pid_t gettid(void);
#define off64_t off_t
#endif
-#define POSIX_CLOSE_RESTART 0
-
#define _XOPEN_VERSION 700
#define _XOPEN_UNIX 1
#define _XOPEN_ENH_I18N 1