configure: Don't require pthread-stubs on Cygwin
Commit 1f4869a2 unconditionally requires pthread-stubs. Unfortunately, the
cleverness that pthread-stubs is doesn't work with PE/COFF, and historically
Cygwin doesn't have a pthread-stubs.pc.
Don't require pthread-stubs on Cygwin.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
diff --git a/configure.ac b/configure.ac
index c1de4d8..54416b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -822,9 +822,21 @@
dnl pkgconfig files.
test -z "$PTHREAD_LIBS" && PTHREAD_LIBS="-lpthread"
-PKG_CHECK_MODULES(PTHREADSTUBS, pthread-stubs)
-AC_SUBST(PTHREADSTUBS_CFLAGS)
-AC_SUBST(PTHREADSTUBS_LIBS)
+dnl pthread-stubs is mandatory on targets where it exists
+case "$host_os" in
+cygwin* )
+ pthread_stubs_possible="no"
+ ;;
+* )
+ pthread_stubs_possible="yes"
+ ;;
+esac
+
+if test "x$pthread_stubs_possible" = xyes; then
+ PKG_CHECK_MODULES(PTHREADSTUBS, pthread-stubs)
+ AC_SUBST(PTHREADSTUBS_CFLAGS)
+ AC_SUBST(PTHREADSTUBS_LIBS)
+fi
dnl SELinux awareness.
AC_ARG_ENABLE([selinux],