[libvirt] [PATCH] configure: Check for MSG_NOSIGNAL availability
The symbol being missing has been reported as causing build failures on OS X. Check for its availability before using it. --- See https://www.redhat.com/archives/libvir-list/2016-July/msg00613.html configure.ac | 4 ++++ src/util/virsystemd.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 2c81c95..af5d2f8 100644 --- a/configure.ac +++ b/configure.ac @@ -402,6 +402,10 @@ AC_CHECK_TYPE([struct sockpeercred], [], [[#include <sys/socket.h> ]]) +AC_CHECK_DECLS([MSG_NOSIGNAL], + [], [], [[#include <sys/socket.h> + ]]) + AC_CHECK_DECLS([ETH_FLAG_TXVLAN, ETH_FLAG_NTUPLE, ETH_FLAG_RXHASH, ETH_FLAG_LRO, ETHTOOL_GGSO, ETHTOOL_GGRO, ETHTOOL_GFLAGS, ETHTOOL_GFEATURES], [], [], [[#include <linux/ethtool.h> diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c index 969cd68..d2f4bfb 100644 --- a/src/util/virsystemd.c +++ b/src/util/virsystemd.c @@ -482,7 +482,7 @@ int virSystemdTerminateMachine(const char *name) void virSystemdNotifyStartup(void) { -#ifdef HAVE_SYS_UN_H +#if defined(HAVE_SYS_UN_H) && defined(HAVE_MSG_NOSIGNAL) const char *path; const char *msg = "READY=1"; int fd; @@ -526,7 +526,7 @@ virSystemdNotifyStartup(void) VIR_WARN("Failed to notify systemd"); VIR_FORCE_CLOSE(fd); -#endif /* HAVE_SYS_UN_H */ +#endif /* defined(HAVE_SYS_UN_H) && defined(HAVE_MSG_NOSIGNAL) */ } static int -- 2.7.4
On Tue, Jul 19, 2016 at 04:00:25PM +0200, Andrea Bolognani wrote:
The symbol being missing has been reported as causing build failures on OS X. Check for its availability before using it. --- See https://www.redhat.com/archives/libvir-list/2016-July/msg00613.html
configure.ac | 4 ++++ src/util/virsystemd.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/configure.ac b/configure.ac index 2c81c95..af5d2f8 100644 --- a/configure.ac +++ b/configure.ac @@ -402,6 +402,10 @@ AC_CHECK_TYPE([struct sockpeercred], [], [[#include <sys/socket.h> ]])
+AC_CHECK_DECLS([MSG_NOSIGNAL], + [], [], [[#include <sys/socket.h> + ]]) + AC_CHECK_DECLS([ETH_FLAG_TXVLAN, ETH_FLAG_NTUPLE, ETH_FLAG_RXHASH, ETH_FLAG_LRO, ETHTOOL_GGSO, ETHTOOL_GGRO, ETHTOOL_GFLAGS, ETHTOOL_GFEATURES], [], [], [[#include <linux/ethtool.h> diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c index 969cd68..d2f4bfb 100644 --- a/src/util/virsystemd.c +++ b/src/util/virsystemd.c @@ -482,7 +482,7 @@ int virSystemdTerminateMachine(const char *name) void virSystemdNotifyStartup(void) { -#ifdef HAVE_SYS_UN_H +#if defined(HAVE_SYS_UN_H) && defined(HAVE_MSG_NOSIGNAL)
What are the benefits of checking this at configure-time? Seems to me we could just as well use defined(MSG_NOSIGNAL) without slowing configure down even more if we aren't going to base other configure-time decisions on it. Jan
On Tue, 2016-07-19 at 16:23 +0200, Ján Tomko wrote:
On Tue, Jul 19, 2016 at 04:00:25PM +0200, Andrea Bolognani wrote:
The symbol being missing has been reported as causing build failures on OS X. Check for its availability before using it. --- See https://www.redhat.com/archives/libvir-list/2016-July/msg00613.html configure.ac | 4 ++++ src/util/virsystemd.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 2c81c95..af5d2f8 100644 --- a/configure.ac +++ b/configure.ac @@ -402,6 +402,10 @@ AC_CHECK_TYPE([struct sockpeercred], [], [[#include <sys/socket.h> ]]) +AC_CHECK_DECLS([MSG_NOSIGNAL], + [], [], [[#include <sys/socket.h> + ]]) + AC_CHECK_DECLS([ETH_FLAG_TXVLAN, ETH_FLAG_NTUPLE, ETH_FLAG_RXHASH, ETH_FLAG_LRO, ETHTOOL_GGSO, ETHTOOL_GGRO, ETHTOOL_GFLAGS, ETHTOOL_GFEATURES], [], [], [[#include <linux/ethtool.h> diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c index 969cd68..d2f4bfb 100644 --- a/src/util/virsystemd.c +++ b/src/util/virsystemd.c @@ -482,7 +482,7 @@ int virSystemdTerminateMachine(const char *name) void virSystemdNotifyStartup(void) { -#ifdef HAVE_SYS_UN_H +#if defined(HAVE_SYS_UN_H) && defined(HAVE_MSG_NOSIGNAL) What are the benefits of checking this at configure-time? Seems to me we could just as well use defined(MSG_NOSIGNAL) without slowing configure down even more if we aren't going to base other configure-time decisions on it.
You're of course right. I'm not quite sure what I was thinking when I added the configure check. -- Andrea Bolognani / Red Hat / Virtualization
On 19 Jul 2016, at 15:48, Andrea Bolognani <abologna@redhat.com> wrote:
On Tue, 2016-07-19 at 16:23 +0200, Ján Tomko wrote:
On Tue, Jul 19, 2016 at 04:00:25PM +0200, Andrea Bolognani wrote:
The symbol being missing has been reported as causing build failures on OS X. Check for its availability before using it. --- See https://www.redhat.com/archives/libvir-list/2016-July/msg00613.html
configure.ac | 4 ++++ src/util/virsystemd.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/configure.ac b/configure.ac index 2c81c95..af5d2f8 100644 --- a/configure.ac +++ b/configure.ac @@ -402,6 +402,10 @@ AC_CHECK_TYPE([struct sockpeercred], [], [[#include <sys/socket.h> ]])
+AC_CHECK_DECLS([MSG_NOSIGNAL], + [], [], [[#include <sys/socket.h> + ]]) + AC_CHECK_DECLS([ETH_FLAG_TXVLAN, ETH_FLAG_NTUPLE, ETH_FLAG_RXHASH, ETH_FLAG_LRO, ETHTOOL_GGSO, ETHTOOL_GGRO, ETHTOOL_GFLAGS, ETHTOOL_GFEATURES], [], [], [[#include <linux/ethtool.h> diff --git a/src/util/virsystemd.c b/src/util/virsystemd.c index 969cd68..d2f4bfb 100644 --- a/src/util/virsystemd.c +++ b/src/util/virsystemd.c @@ -482,7 +482,7 @@ int virSystemdTerminateMachine(const char *name) void virSystemdNotifyStartup(void) { -#ifdef HAVE_SYS_UN_H +#if defined(HAVE_SYS_UN_H) && defined(HAVE_MSG_NOSIGNAL)
What are the benefits of checking this at configure-time?
Seems to me we could just as well use defined(MSG_NOSIGNAL) without slowing configure down even more if we aren't going to base other configure-time decisions on it.
You're of course right. I'm not quite sure what I was thinking when I added the configure check.
Heh Heh Heh Guessing this means there'll be a new version of the patch I need to test? ;) + Justin -- "My grandfather once told me that there are two kinds of people: those who work and those who take the credit. He told me to try to be in the first group; there was less competition there." - Indira Gandhi
participants (3)
-
Andrea Bolognani -
Justin Clift -
Ján Tomko