gentoo-overlay/app-text/kchmviewer/files/kchmviewer-7.7-underlinking.patch

--- a/src/src.pro
+++ b/src/src.pro
@@ -108,7 +108,7 @@
     HEADERS += dbus_interface.h
     SOURCES += dbus_interface.cpp
     CONFIG += dbus
-    LIBS += ../lib/libebook/libebook.a
+    LIBS += ../lib/libebook/libebook.a -lchm -lzip
     POST_TARGETDEPS += ../lib/libebook/libebook.a
 }