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[PATCH v4 07/12] libvduse: Provide _GNU_SOURCE when compiling outside of
From: |
Marcel Holtmann |
Subject: |
[PATCH v4 07/12] libvduse: Provide _GNU_SOURCE when compiling outside of QEMU |
Date: |
Thu, 22 Dec 2022 21:36:46 +0100 |
When the libvduse sources are used by another project, it can not be
guaranteed that _GNU_SOURCE is set by the build system. If it is for
example not set, errors like this show up.
CC libvduse.o
libvduse.c: In function ‘vduse_log_get’:
libvduse.c:172:9: error: implicit declaration of function ‘ftruncate’; did you
mean ‘strncat’? [-Werror=implicit-function-declaration]
172 | if (ftruncate(fd, size) == -1) {
| ^~~~~~~~~
| strncat
The simplest way to allow external complication of libvduse.[ch] by
setting _GNU_SOURCE if it is not already set by the build system.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---
subprojects/libvduse/libvduse.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/subprojects/libvduse/libvduse.c b/subprojects/libvduse/libvduse.c
index e089d4d546cf..c871bd331a6b 100644
--- a/subprojects/libvduse/libvduse.c
+++ b/subprojects/libvduse/libvduse.c
@@ -16,6 +16,10 @@
* later. See the COPYING file in the top-level directory.
*/
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
--
2.38.1
- [PATCH v4 00/12] Compiler warning fixes for libvhost-user,libvduse, Marcel Holtmann, 2022/12/22
- [PATCH v4 01/12] libvhost-user: Provide _GNU_SOURCE when compiling outside of QEMU, Marcel Holtmann, 2022/12/22
- [PATCH v4 02/12] libvhost-user: Replace typeof with __typeof__, Marcel Holtmann, 2022/12/22
- [PATCH v4 03/12] libvhost-user: Cast rc variable to avoid compiler warning, Marcel Holtmann, 2022/12/22
- [PATCH v4 04/12] libvhost-user: Use unsigned int i for some for-loop iterations, Marcel Holtmann, 2022/12/22
- [PATCH v4 06/12] libvhost-user: Change dev->postcopy_ufd assignment to make it C90 compliant, Marcel Holtmann, 2022/12/22
- [PATCH v4 05/12] libvhost-user: Declare uffdio_register early to make it C90 compliant, Marcel Holtmann, 2022/12/22
- [PATCH v4 07/12] libvduse: Provide _GNU_SOURCE when compiling outside of QEMU,
Marcel Holtmann <=
- [PATCH v4 08/12] libvduse: Switch to unsigned int for inuse field in struct VduseVirtq, Marcel Holtmann, 2022/12/22
- [PATCH v4 10/12] libvhost-user: Fix assignment in vring_set_avail_event, Marcel Holtmann, 2022/12/22
- [PATCH v4 09/12] libvduse: Fix assignment in vring_set_avail_event, Marcel Holtmann, 2022/12/22
- [PATCH v4 12/12] libvduse: Add extra compiler warnings, Marcel Holtmann, 2022/12/22
- [PATCH v4 11/12] libvhost-user: Add extra compiler warnings, Marcel Holtmann, 2022/12/22
- Re: [PATCH v4 00/12] Compiler warning fixes for libvhost-user,libvduse, Paolo Bonzini, 2022/12/23