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>
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@ -3495,6 +3495,22 @@ if compile_prog "" "" ; then
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eventfd=yes
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fi
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# check if memfd is supported
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memfd=no
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cat > $TMPC << EOF
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#include <sys/memfd.h>
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int main(void)
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{
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return memfd_create("foo", MFD_ALLOW_SEALING);
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}
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EOF
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if compile_prog "" "" ; then
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memfd=yes
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fi
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# check for fallocate
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fallocate=no
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cat > $TMPC << EOF
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@ -4889,6 +4905,9 @@ fi
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if test "$eventfd" = "yes" ; then
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echo "CONFIG_EVENTFD=y" >> $config_host_mak
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fi
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if test "$memfd" = "yes" ; then
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echo "CONFIG_MEMFD=y" >> $config_host_mak
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fi
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if test "$fallocate" = "yes" ; then
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echo "CONFIG_FALLOCATE=y" >> $config_host_mak
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fi
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