Add lookup of linker flags of libgwenhyfar-gui-gtk2.

It is still disabled until more testing has been done, though.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@19446 57a11ea4-9604-0410-9ed3-97b8803252fd

configure.ac

@@ -766,6 +766,8 @@ then
       AC_MSG_ERROR([Could not find aqbanking > 1.6.0. If you use --enable-aqbanking or --enable-hbci, you *have* to have aqbanking installed!])
     ])
   ])
+  # For libgwenhywfar > 3.99.20, look for its library gwengui-gtk2.
+  PKG_CHECK_MODULES([GWENGUI_GTK2], [gwengui-gtk2 gwenhywfar], [has_gwengui_gtk2=1], [has_gwengui_gtk2=0])
 
   # also check for ktoblzcheck
   AC_CHECK_HEADERS(ktoblzcheck.h)

src/import-export/aqbanking/Makefile.am

@@ -45,6 +45,7 @@ libgncmod_aqbanking_la_LIBADD = \
   ${GNOME_LIBS} \
   ${GLADE_LIBS} \
   ${GLIB_LIBS} \
+  ${GWENGUI_GTK2_LIBS} \
   ${AQBANKING_LIBS}
 
 AM_CFLAGS = \

src/import-export/aqbanking/gnc-gwen-gui.c

@@ -47,17 +47,15 @@
 
 #if GWENHYWFAR_VERSION_INT > 39913
 /* Only for the brave: You can enable the gwenhywfar gtk2 gui object
- * by un-commenting this here. Note: Also need to add "-lgwengui-gtk2"
- * to the LIBADD section in Makefile.am because that library can't be
- * looked up automatically so far! */
+ * by un-commenting this here. */
 /*# define USING_GWENHYWFAR_GTK2_GUI*/
 #endif
 
 #ifdef USING_GWENHYWFAR_GTK2_GUI
-# if GWENHYWFAR_VERSION_INT < 39920
-#  include <../gwen-gui-gtk2/gtk2_gui.h>
-# else
+# if GWENHYWFAR_VERSION_INT >= 39920
 #  include <gwen-gui-gtk2/gtk2_gui.h>
+# else
+#  error "You must be using libgwenhywfar >= 3.99.20 because otherwise the -lgwengui-gtk2 is not added into the linker flags"
 # endif
 #endif