From 195588ccd55d3afa8621af3b4718babbf6cdca19 Mon Sep 17 00:00:00 2001 From: David CARLIER Date: Mon, 13 Jul 2020 14:36:09 +0100 Subject: build: Check that mlockall() exists Instead of assuming that all POSIX platforms provide mlockall(), test for it in configure. If the host doesn't provide this platform then os_mlock() will fail -ENOSYS, as it does already on Windows. This is necessary for Haiku, which does not have mlockall(). Signed-off-by: David Carlier Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell Message-id: 20200703145614.16684-4-peter.maydell@linaro.org [PMM: Expanded commit message; rename to HAVE_MLOCKALL] Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- configure | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'configure') diff --git a/configure b/configure index 978505611b..429c938708 100755 --- a/configure +++ b/configure @@ -2408,6 +2408,18 @@ else pty_h=no fi +cat > $TMPC < +int main(int argc, char *argv[]) { + return mlockall(MCL_FUTURE); +} +EOF +if compile_prog "" "" ; then + have_mlockall=yes +else + have_mlockall=no +fi + ######################################### # vhost interdependencies and host support @@ -7902,6 +7914,9 @@ fi if test "$pty_h" = "yes" ; then echo "HAVE_PTY_H=y" >> $config_host_mak fi +if test "$have_mlockall" = "yes" ; then + echo "HAVE_MLOCKALL=y" >> $config_host_mak +fi if test "$fuzzing" = "yes" ; then if test "$have_fuzzer" = "yes"; then FUZZ_LDFLAGS=" -fsanitize=address,fuzzer" -- cgit v1.2.3