$NetBSD$

Bump minimum CMake version to 3.0 to get libbacktrace detection.
Fix path for installing man-pages.

--- CMakeLists.txt.orig	2016-08-30 12:27:33.000000000 +0000
+++ CMakeLists.txt
@@ -27,7 +27,7 @@ message ("-- Configuring the Scanner..."
 
 project (openvas-scanner C)
 
-cmake_minimum_required (VERSION 2.6)
+cmake_minimum_required (VERSION 3.0)
 
 if (POLICY CMP0005)
   cmake_policy (SET CMP0005 OLD)
@@ -263,16 +263,18 @@ install (FILES ${CMAKE_BINARY_DIR}/tools
          PERMISSIONS OWNER_EXECUTE OWNER_READ OWNER_WRITE
                      GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
 
+include(GNUInstallDirs)
+
 install (FILES ${CMAKE_SOURCE_DIR}/doc/openvas-mkcert-client.1
-          DESTINATION ${DATADIR}/man/man1 )
+          DESTINATION ${CMAKE_INSTALL_MANDIR}/man1 )
 
 install (FILES ${CMAKE_BINARY_DIR}/doc/openvassd.8
-         DESTINATION ${DATADIR}/man/man8 )
+         DESTINATION ${CMAKE_INSTALL_MANDIR}/man8 )
 
 install (FILES ${CMAKE_SOURCE_DIR}/doc/openvas-mkcert.8
                ${CMAKE_SOURCE_DIR}/doc/openvas-nvt-sync.8
                ${CMAKE_SOURCE_DIR}/doc/greenbone-nvt-sync.8
-         DESTINATION ${DATADIR}/man/man8 )
+         DESTINATION ${CMAKE_INSTALL_MANDIR}/man8 )
 
 install (FILES ${CMAKE_BINARY_DIR}/doc/example_redis_2_4.conf
                ${CMAKE_BINARY_DIR}/doc/example_redis_2_6.conf