configure.ac: pthread-stubs not present on OpenBSD

pthread-stubs is no longer required on OpenBSD and has been removed.
libpthread parts involved moved to libc.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Cc: 17.3 18.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

diff --git a/configure.ac b/configure.ac
index d37cb67a4605d4ee8354999f59925371c0a758c8..8a9172690a87d68714f7b44ed3f93794803ba9ee 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -939,10 +939,10 @@ dnl In practise that should be sufficient for all platforms, since any
 dnl platforms build with GCC and Clang support the flag.
 PTHREAD_LIBS="$PTHREAD_LIBS -pthread"
 
-dnl pthread-stubs is mandatory on BSD platforms, due to the nature of the
+dnl pthread-stubs is mandatory on some BSD platforms, due to the nature of the
 dnl project. Even then there's a notable issue as described in the project README
 case "$host_os" in
-linux* | cygwin* | darwin* | solaris* | *-gnu* | gnu*)
+linux* | cygwin* | darwin* | solaris* | *-gnu* | gnu* | openbsd*)
     pthread_stubs_possible="no"
     ;;
 * )