From 0542a5df3b53e7fce3c9d0f12c9f236d92c8b2a1 Mon Sep 17 00:00:00 2001
From: Neil Carlson <neil.n.carlson@gmail.com>
Date: Sat, 24 Mar 2018 17:40:38 -0600
Subject: [PATCH] Improvements to FindYAJL.cmake

---
 CMakeLists.txt       |  5 +++++
 cmake/FindYAJL.cmake | 25 ++++++++++++++-----------
 src/CMakeLists.txt   |  2 +-
 3 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0534650..4d18594 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,6 +35,11 @@ if(CMAKE_Fortran_COMPILER_ID MATCHES GNU)
   add_definitions(-DNO_2008_LHS_POLY_REALLOC)
 endif()
 
+# RPATH handling for installed shared libraries and dynamically-linked
+# executables.  See http://www.cmake.org/Wiki/CMake_RPATH_handling
+set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+
 add_subdirectory(src)
 
 option(BUILD_TESTS "Build test programs" ON)
diff --git a/cmake/FindYAJL.cmake b/cmake/FindYAJL.cmake
index 06b83d0..c7d51d6 100644
--- a/cmake/FindYAJL.cmake
+++ b/cmake/FindYAJL.cmake
@@ -6,17 +6,20 @@
 #  YAJL_LIBRARIES
 #  YAJL_VERSION
 #
-# This module also defines the imported library target "yajl".  It is
-# generally enough to include "yajl" as a target link library; cmake
+# This module defines the imported library target YAJL::YAJL.  It is
+# generally enough to include YAJL::YAJL as a target link library; cmake
 # will automatically handle adding the appropriate compile include flags
 # and collection of link libraries.
 #
-# Set the variable CMAKE_PREFIX_PATH to provide a hint to the module for
-# where to find the library and header file.  This is searched before the
-# standard system locations.
+# Set the variable CMAKE_PREFIX_PATH or environment variable YAJL_ROOT to
+# provide a hint to the module for where to find the library and header file.
+# This is searched before the standard system locations.
 
-find_path(YAJL_INCLUDE_DIR yajl/yajl_common.h)
-find_library(YAJL_LIBRARY NAMES yajl yajl_s) 
+set(yajl_search_paths ENV YAJL_ROOT)
+find_path(YAJL_INCLUDE_DIR NAMES yajl/yajl_common.h
+          HINTS ${yajl_search_paths} PATH_SUFFIXES include)
+find_library(YAJL_LIBRARY NAMES yajl yajl_s
+             HINTS ${yajl_search_paths} PATH_SUFFIXES lib)
 
 if(NOT YAJL_VERSION)
   if(YAJL_INCLUDE_DIR AND YAJL_LIBRARY)
@@ -37,16 +40,16 @@ endif()
 
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(YAJL
-    REQUIRED_VARS YAJL_LIBRARY YAJL_INCLUDE_DIR 
+    REQUIRED_VARS YAJL_LIBRARY YAJL_INCLUDE_DIR
     VERSION_VAR YAJL_VERSION)
 
 if(YAJL_FOUND)
   set(YAJL_INCLUDE_DIRS ${YAJL_INCLUDE_DIR})
   set(YAJL_LIBRARIES ${YAJL_LIBRARY})
   mark_as_advanced(YAJL_INCLUDE_DIR YAJL_LIBRARY)
-  if(NOT TARGET yajl)
-    add_library(yajl UNKNOWN IMPORTED)
-    set_target_properties(yajl PROPERTIES
+  if(NOT TARGET YAJL::YAJL)
+    add_library(YAJL::YAJL UNKNOWN IMPORTED)
+    set_target_properties(YAJL::YAJL PROPERTIES
         IMPORTED_LOCATION "${YAJL_LIBRARY}"
         INTERFACE_INCLUDE_DIRECTORIES "${YAJL_INCLUDE_DIRS}"
         INTERFACE_LINK_LIBRARIES "${YAJL_LIBRARIES}")
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ee1d116..a70e905 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -15,7 +15,7 @@ target_include_directories(yajl_fort PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
 )
 
-target_link_libraries(yajl_fort yajl)
+target_link_libraries(yajl_fort YAJL::YAJL)
 
 install(TARGETS yajl_fort
         EXPORT  yajl_fort