[PATCH v1 03/17] selftests/nolibc: add _LARGEFILE64_SOURCE for musl

From: Zhangjin Wu
Date: Wed Jun 21 2023 - 08:56:53 EST


_GNU_SOURCE Implies _LARGEFILE64_SOURCE in glibc, but in musl, the
default configuration doesn't enable _LARGEFILE64_SOURCE.

>From include/dirent.h of musl, getdents64 is provided as getdents when
_LARGEFILE64_SOURCE is defined.

#if defined(_LARGEFILE64_SOURCE)
...
#define getdents64 getdents
#endif

Let's define _LARGEFILE64_SOURCE to fix up this compile error:

tools/testing/selftests/nolibc/nolibc-test.c: In function ‘test_getdents64’:
tools/testing/selftests/nolibc/nolibc-test.c:453:8: warning: implicit declaration of function ‘getdents64’; did you mean ‘getdents’? [-Wimplicit-function-declaration]
453 | ret = getdents64(fd, (void *)buffer, sizeof(buffer));
| ^~~~~~~~~~
| getdents
/usr/bin/ld: /tmp/ccKILm5u.o: in function `test_getdents64':
nolibc-test.c:(.text+0xe3e): undefined reference to `getdents64'
collect2: error: ld returned 1 exit status

Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx>
---
tools/testing/selftests/nolibc/nolibc-test.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 739c9daa91b6..d43116553288 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */

#define _GNU_SOURCE
+#define _LARGEFILE64_SOURCE

/* libc-specific include files
* The program may be built in 3 ways:
--
2.25.1