--- configure.in	2005/02/16 17:05:06	1.1
+++ configure.in	2005/02/16 17:09:36
@@ -210,16 +210,20 @@ AC_SUBST(LIBTRAYICON_LIBS)
 
 dnl ----------------------------------------------
 
-EVOLUTION_SHARP_REQUIRED_VERSION=0.6
-PKG_CHECK_MODULES(EVO_SHARP,						\
-                  evolution-sharp >= $EVOLUTION_SHARP_REQUIRED_VERSION, \
-                  enable_evo_sharp=yes,					\
-		  enable_evo_sharp=no)
-AC_SUBST(EVO_SHARP_LIBS)
+AC_ARG_ENABLE([evolution],
+    [  --enable-evolution   Enable Evolution Support ],
+	enable_evo_sharp=$enableval,
+	enable_evo_sharp=no)
 
 AM_CONDITIONAL(ENABLE_EVO_SHARP, test "x$enable_evo_sharp" = "xyes")
 
-EVO_SHARP_PREFIX=`$PKG_CONFIG --variable=prefix evolution-sharp`
+if test "x$enable_evo_sharp" = "xyes"; then
+	EVOLUTION_SHARP_REQUIRED_VERSION=0.6
+	PKG_CHECK_MODULES(EVO_SHARP,						\
+					  evolution-sharp >= $EVOLUTION_SHARP_REQUIRED_VERSION)
+	AC_SUBST(EVO_SHARP_LIBS)
+	EVO_SHARP_PREFIX=`$PKG_CONFIG --variable=prefix evolution-sharp`
+fi
 
 dnl ----------------------------------------------