Add gphoto2 detection using pkg-config.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 1377b2dbf0)

kipi-plugins/configure.in.in

@@ -308,19 +308,30 @@ fi
 have_gphoto=no
 
 if test "x$build_gphoto" != "xno"; then
+
+  KDE_PKG_CHECK_MODULES(GPHOTO, libgphoto2,
+    have_gphoto=yes, have_gphoto=no)
+
+  if test "x$have_gphoto" != "xyes"; then
     AC_PATH_PROG(GPHOTO_CONFIG,gphoto2-config)
     AC_PATH_PROG(GPHOTO_PORT_CONFIG,gphoto2-port-config)
     if test -n "${GPHOTO_CONFIG}"; then
       GPHOTO_CFLAGS="`$GPHOTO_CONFIG --cflags`"
       AC_SUBST(GPHOTO_CFLAGS)
-    LIB_GPHOTO="`$GPHOTO_CONFIG --libs` `$GPHOTO_PORT_CONFIG --libs`"
-    AC_SUBST(LIB_GPHOTO)
+      GPHOTO_LIBS="`$GPHOTO_CONFIG --libs` `$GPHOTO_PORT_CONFIG --libs`"
+      AC_SUBST(GPHOTO_LIBS)
       have_gphoto=yes
+    fi
+  fi
+
+  if test "x$have_gphoto" = "xyes"; then
     AC_CHECK_LIB(gphoto2_port, gp_port_info_get_name, have_gphoto2_5=yes, have_gphoto2_5=no)
     if test "x$have_gphoto2_5" != "xno"; then
       AC_DEFINE(HAVE_GPHOTO2_5, 1, [have gphoto 2.5])
     fi
-  else
+  fi
+
+  if test "x$have_gphoto" != "xyes"; then
     AC_MSG_WARN([gPhoto2 not found, some plugins will not be compiled.])
   fi
 fi

kipi-plugins/kameraklient/Makefile.am

@@ -6,7 +6,7 @@ METASOURCES = AUTO
 kde_module_LTLIBRARIES = kipiplugin_kameraklient.la
 kipiplugin_kameraklient_la_DEPENDENCIES = $(LIBKIPI_LIBS_DEP)
 
-kipiplugin_kameraklient_la_LIBADD = $(LIB_GPHOTO) $(LIBKIPI_LIBS) $(LIB_TDEIO) $(LIB_TDEUI) $(LIB_TDECORE) $(LIB_QT)
+kipiplugin_kameraklient_la_LIBADD = $(GPHOTO_LIBS) $(LIBKIPI_LIBS) $(LIB_TDEIO) $(LIB_TDEUI) $(LIB_TDECORE) $(LIB_QT)
 
 kipiplugin_kameraklient_la_LDFLAGS = $(KIPI_PLUGINS_COMMON_LDFLAGS) -module $(KDE_PLUGIN) $(all_libraries) -lkipiplugins