--- claws-mail-4.3.1/configure.ac.orig
+++ claws-mail-4.3.1/configure.ac
@@ -135,6 +135,10 @@
     platform_win32=yes
     LDFLAGS="$LDFLAGS -mwindows -Wl,--export-all-symbols"
     ;;
+  *solaris*)
+	platform_osx=no
+	platform_win32=no
+    ;;
 	*-apple-*)
 		platform_osx=yes
 		LDFLAGS="$LDFLAGS -Wl,-export_dynamic"