[gspell/wip/gtk4: 1/2] Build against gtk4

[Timm Bäder <baedert src gnome org>]

commit ad1ab8943f4686f334da548644d9ddf4f5392339
Author: Timm Bäder <mail baedert org>
Date:   Thu Dec 1 13:30:47 2016 +0100

    Build against gtk4

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1bda21f..47aefe2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,7 +52,7 @@ AC_SUBST(GSPELL_API_VERSION)
 # Dependencies
 enchant_req=1.6.0
 glib_req=2.44
-gtk_req=3.20
+gtk_req=3.89
 
 AC_CONFIG_SRCDIR([gspell/gspell-checker.c])
 AC_CONFIG_HEADER([config.h])
@@ -91,7 +91,7 @@ AX_COMPILER_FLAGS([WARN_CFLAGS], [WARN_LDFLAGS])
 # Dynamic linking dependencies
 AX_REQUIRE_DEFINED([AX_PKG_CHECK_MODULES])
 AX_PKG_CHECK_MODULES([DEP],
-                    [glib-2.0 >= $glib_req  gtk+-3.0 >= $gtk_req],
+                    [glib-2.0 >= $glib_req  gtk+-4.0 >= $gtk_req],
                     [enchant >= $enchant_req])
 
 # iso-codes