--- OpenCPN-3.0.2-Source/CMakeLists.txt.orig	2012-07-18 00:27:24.531257698 +0200
+++ OpenCPN-3.0.2-Source/CMakeLists.txt	2012-07-18 00:29:37.669412986 +0200
@@ -99,6 +99,9 @@
       SET (LIB_INSTALL_DIR "lib")
     ENDIF (CMAKE_SIZEOF_VOID_P MATCHES "8")
   ENDIF (EXISTS /etc/suse-release OR EXISTS /etc/SuSE-release)
+  IF (EXISTS /etc/gentoo-release)
+    SET (LIB_INSTALL_DIR "lib${LIB_SUFFIX}")
+  ENDIF (EXISTS /etc/gentoo-release)
   IF(APPLE)
     IF (CMAKE_SIZEOF_VOID_P MATCHES "8")
       IF (CMAKE_OSX_64)