From 3fdc36eecb3ab468eb0a55cc09a176ab503d31c3 Mon Sep 17 00:00:00 2001
From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Sun, 17 Nov 2019 19:02:54 +0100
Subject: [PATCH] Error out on --with-harfbuzz without HarfBuzz support

* configure.ac: Error out if the user says --with-harfbuzz, but
HarfBuzz isn't available.
---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 3b6a2a6d167..0976b665e66 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3469,6 +3469,11 @@ if test "${HAVE_X11}" = "yes" && test "${HAVE_FREETYPE}" = "yes" \
   fi
 fi
 
+# The user explicitly asked for HarfBuzz, but it won't be used.
+if test "${with_harfbuzz}" == "yes" && test "$HAVE_HARFBUZZ" != "yes"; then
+   AC_MSG_ERROR([HarfBuzz wanted, but won't be used.  Maybe some library files are missing?]);
+fi
+
 ### End of font-backend section.
 
 AC_SUBST(FREETYPE_CFLAGS)