Merge branch 'fix-rpath' into 'master'

Fix rpath to solve requirement for LD_LIBRARY_PATH

See merge request RD/EveryBeam!54

CMakeLists.txt

@@ -72,6 +72,24 @@ if (NOT CMAKE_BUILD_TYPE MATCHES Debug)
     add_compile_options(-DNDEBUG)
 endif()
 
+# The following stuff will set the "rpath" correctly, so that
+# LD_LIBRARY_PATH doesn't have to be set.
+
+# use, i.e. don't skip the full RPATH for the build tree
+set(CMAKE_SKIP_BUILD_RPATH  FALSE)
+# when building, don't use the install RPATH already
+# (but later on when installing)
+set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
+set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+# add the automatically determined parts of the RPATH
+# which point to directories outside the build tree to the install RPATH
+set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+# the RPATH to be used when installing, but only if it's not a system directory
+list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/lib" isSystemDir)
+if("${isSystemDir}" STREQUAL "-1")
+   set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+endif("${isSystemDir}" STREQUAL "-1")
+
 #------------------------------------------------------------------------------
 # Find/load top level dependencies
 # add_subdirectory(external)