--- gigedit/trunk/configure.ac	2016/05/01 21:17:42	2898
+++ gigedit/trunk/configure.ac	2017/04/28 12:41:12	3134
@@ -5,7 +5,7 @@
 
 m4_define(gigedit_ver_major, 1)
 m4_define(gigedit_ver_minor, 0)
-m4_define(gigedit_ver_release, 0.svn10)
+m4_define(gigedit_ver_release, 0.svn31)
 
 AC_INIT([gigedit], [gigedit_ver_major.gigedit_ver_minor.gigedit_ver_release])
 AC_CONFIG_SRCDIR([configure.ac])
@@ -70,9 +70,14 @@
 AM_CONDITIONAL(WINDOWS, test "$windows" = "yes")
 AM_CONDITIONAL(MAC, test "$mac" = "yes")
 
-if test "$mac" = "yes"; then
-    AC_PROG_OBJC
-fi
+# Note: even though Objective-C sources are just compiled for Mac, the
+# following AC macros though must not be embedded into a shell check
+# (if test "$mac" = "yes" ...), because those AC macros themselves are
+# expanded before any shell code is executed, the generated configure
+# code though would then not be executed and would lead to interesting
+# libtool errors on non-Mac systems due to this.
+AC_PROG_OBJC
+AC_PROG_OBJCXX
 
 PKG_PROG_PKG_CONFIG
 have_gtk3=no
@@ -193,6 +198,7 @@
 	Makefile
 	src/Makefile
 	src/gigedit/Makefile
+    src/gigedit/gfx/Makefile
 	src/plugin/Makefile
 	gfx/Makefile
 	po/Makefile.in