From: Marcel Holtmann Date: Thu, 22 Dec 2022 20:36:40 +0000 (+0100) Subject: libvhost-user: Provide _GNU_SOURCE when compiling outside of QEMU X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dadc3d01bcb0d8654361e5ce77f65a679f2d7a80;p=qemu.git libvhost-user: Provide _GNU_SOURCE when compiling outside of QEMU Then the libvhost-user 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 libvhost-user.o libvhost-user.c: In function ‘vu_panic’: libvhost-user.c:195:9: error: implicit declaration of function ‘vasprintf’; did you mean ‘vsprintf’? [-Werror=implicit-function-declaration] 195 | if (vasprintf(&buf, msg, ap) < 0) { | ^~~~~~~~~ | vsprintf The simplest way to allow external complication of libvhost-user.[ch] is by setting _GNU_SOURCE if it is not already set by the build system. Signed-off-by: Marcel Holtmann Message-Id: Signed-off-by: Paolo Bonzini --- diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvhost-user/libvhost-user.c index d6ee6e7d91..b55b9e244d 100644 --- a/subprojects/libvhost-user/libvhost-user.c +++ b/subprojects/libvhost-user/libvhost-user.c @@ -13,6 +13,10 @@ * later. See the COPYING file in the top-level directory. */ +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + /* this code avoids GLib dependency */ #include #include