From e68185e89bd9c09eaedce99b053e6e76e9b41604 Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Wed, 22 Nov 2017 07:33:11 -0600
Subject: [PATCH] Make sure libopenmc.so gets installed (and has correct RPATH)

---
 CMakeLists.txt | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b0bef14e..dfd9221ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -281,10 +281,30 @@ target_link_libraries(pugixml_fortran pugixml)
 # RPATH information
 #===============================================================================
 
+# This block of code ensures that dynamic libraries can be found via the RPATH
+# whether the executable is the original one from the build directory or the
+# installed one in CMAKE_INSTALL_PREFIX. Ref:
+# https://cmake.org/Wiki/CMake_RPATH_handling#Always_full_RPATH
+
+# 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()
+
 #===============================================================================
 # Build faddeeva library
 #===============================================================================
@@ -435,7 +455,9 @@ add_custom_command(TARGET libopenmc POST_BUILD
 # Install executable, scripts, manpage, license
 #===============================================================================
 
-install(TARGETS ${program} RUNTIME DESTINATION bin)
+install(TARGETS ${program} libopenmc
+  RUNTIME DESTINATION bin
+  LIBRARY DESTINATION lib)
 install(DIRECTORY src/relaxng DESTINATION share/openmc)
 install(FILES man/man1/openmc.1 DESTINATION share/man/man1)
 install(FILES LICENSE DESTINATION "share/doc/${program}" RENAME copyright)