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configure: probe for memfd 

Check if memfd_create() is part of system libc.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
This commit is contained in:
Marc-André Lureau 2015-10-09 17:17:16 +02:00 committed by Michael S. Tsirkin
parent 22de58fe15
commit 751bcc3981
1 changed files with 19 additions and 0 deletions
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19
configure vendored
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@ -3495,6 +3495,22 @@ if compile_prog "" "" ; then
eventfd=yes
fi
# check if memfd is supported
memfd=no
cat > $TMPC << EOF
#include <sys/memfd.h>
int main(void)
{
return memfd_create("foo", MFD_ALLOW_SEALING);
}
EOF
if compile_prog "" "" ; then
memfd=yes
fi
# check for fallocate
fallocate=no
cat > $TMPC << EOF
@ -4889,6 +4905,9 @@ fi
if test "$eventfd" = "yes" ; then
echo "CONFIG_EVENTFD=y" >> $config_host_mak
fi
if test "$memfd" = "yes" ; then
echo "CONFIG_MEMFD=y" >> $config_host_mak
fi
if test "$fallocate" = "yes" ; then
echo "CONFIG_FALLOCATE=y" >> $config_host_mak
fi