configure.ac: bring back pthread-stubs check
Accidentally removed with earlier commit. Although rather than simply
adding the check for all platforms, use the same heuristics as we do in
mesa.
Namely: pthread-stubs is a thing only for BSD platforms. Everyone else
should have lightweight pthread API in their C runtime library.
Fixes: 4ecd1ef010b ("xf86drm: fix null termination of string buffer")
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
diff --git a/configure.ac b/configure.ac
index 6a60ffc..f1a1309 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,10 +61,22 @@
LT_PREREQ([2.2])
LT_INIT([disable-static])
+dnl pthread-stubs is mandatory on BSD platforms, due to the nature of the
+dnl project. Even then there's a notable issue as described in the project README
+case "$host_os" in
+linux* | cygwin* | darwin* | solaris* | gnu*)
+ pthread_stubs_possible="no"
+ ;;
+* )
+ pthread_stubs_possible="yes"
+ ;;
+esac
-
-AC_SUBST(PTHREADSTUBS_CFLAGS)
-AC_SUBST(PTHREADSTUBS_LIBS)
+if test "x$pthread_stubs_possible" = xyes; then
+ PKG_CHECK_MODULES(PTHREADSTUBS, pthread-stubs >= 0.4)
+ AC_SUBST(PTHREADSTUBS_CFLAGS)
+ AC_SUBST(PTHREADSTUBS_LIBS)
+fi
pkgconfigdir=${libdir}/pkgconfig
AC_SUBST(pkgconfigdir)