From 0be627798d943558c674d4d92767ca255d847631 Mon Sep 17 00:00:00 2001
From: Manuel Massing <Manuel Massing m.massing@warped-space.de>
Date: Tue, 22 Nov 2016 12:26:39 +0100
Subject: [PATCH 3/3] CMake: configurable cmake config install location

---
 CMakeLists.txt               |  1 +
 cmake/CMakeLists.txt         | 14 +++++++-------
 cmake/Proj4InstallPath.cmake | 12 +++++++++---
 3 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cde21f0..1b1f892 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -106,6 +106,7 @@ set(LIBDIR "${DEFAULT_LIBDIR}" CACHE PATH "The directory to install libraries in
 set(DATADIR "${DEFAULT_DATADIR}" CACHE PATH "The directory to install data files into.")
 set(DOCDIR "${DEFAULT_DOCDIR}" CACHE PATH "The directory to install doc files into.")
 set(INCLUDEDIR "${DEFAULT_INCLUDEDIR}" CACHE PATH "The directory to install includes into.")
+set(CMAKEDIR "${DEFAULT_CMAKE_CONFIGDIR}" CACHE PATH "The directory to install cmake files into.")
 
 #################################################################################
 # Build configured components
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 742da0e..2bdef0d 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -2,13 +2,13 @@
 # ${INSTALL_CMAKE_DIR} and @PROJECT_ROOT_DIR@ is the relative
 # path to the root from there.  (Note that the whole install tree can
 # be relocated.)
-if (NOT WIN32)
-  set (INSTALL_CMAKE_DIR "share/cmake/${PROJECT_NAME}")
-  set (PROJECT_ROOT_DIR "../../..")
-else ()
-  set (INSTALL_CMAKE_DIR "cmake")
-  set (PROJECT_ROOT_DIR "..")
-endif ()
+
+set (INSTALL_CMAKE_DIR ${CMAKEDIR})
+if(NOT IS_ABSOLUTE ${INSTALL_CMAKE_DIR})
+    set(INSTALL_CMAKE_DIR "${CMAKE_INSTALL_PREFIX}/${CMAKEDIR}")
+endif()
+
+file(RELATIVE_PATH PROJECT_ROOT_DIR ${INSTALL_CMAKE_DIR} ${CMAKE_INSTALL_PREFIX})
 
 string(TOLOWER "${PROJECT_NAME}" PROJECT_NAME_LOWER)
 configure_file (project-config.cmake.in project-config.cmake @ONLY)
diff --git a/cmake/Proj4InstallPath.cmake b/cmake/Proj4InstallPath.cmake
index da1491c..826fb29 100644
--- a/cmake/Proj4InstallPath.cmake
+++ b/cmake/Proj4InstallPath.cmake
@@ -28,13 +28,15 @@ if(WIN32)
   set(DEFAULT_DATA_SUBDIR share)
   set(DEFAULT_INCLUDE_SUBDIR local/include)
   set(DEFAULT_DOC_SUBDIR share/doc/proj)
+  set(DEFAULT_CMAKE_CONFIG_SUBDIR "cmake")
 else()
-  # Common locatoins for Unix and Mac OS X
+  # Common locations for Unix and Mac OS X
   set(DEFAULT_BIN_SUBDIR bin)
   set(DEFAULT_LIB_SUBDIR lib)
   set(DEFAULT_DATA_SUBDIR share/proj)
   set(DEFAULT_DOC_SUBDIR doc/proj)
   set(DEFAULT_INCLUDE_SUBDIR include)
+  set(DEFAULT_CMAKE_CONFIG_SUBDIR "share/cmake/${PROJECT_NAME}")
 endif()
 
 # Locations are changeable by user to customize layout of PDAL installation
@@ -49,19 +51,23 @@ set(PROJ_DATA_SUBDIR ${DEFAULT_DATA_SUBDIR} CACHE STRING
   "Subdirectory where data will be installed")
 set(PROJ_DOC_SUBDIR ${DEFAULT_DOC_SUBDIR} CACHE STRING
   "Subdirectory where data will be installed")
-
+set(PROJ_CMAKE_CONFIG_SUBDIR ${DEFAULT_CMAKE_CONFIG_SUBDIR} CACHE STRING 
+  "Subdirectory where cmake configuration files will be installed")
+  
 # Mark *DIR variables as advanced and dedicated to use by power-users only.
 mark_as_advanced(PROJ_ROOT_DIR
                  PROJ_BIN_SUBDIR
                  PROJ_LIB_SUBDIR 
                  PROJ_INCLUDE_SUBDIR 
                  PROJ_DATA_SUBDIR
-                 PROJ_DOC_SUBDIR )
+                 PROJ_DOC_SUBDIR 
+				 PROJ_CMAKE_CONFIG_SUBDIR)
 
 set(DEFAULT_BINDIR "${PROJ_BIN_SUBDIR}")
 set(DEFAULT_LIBDIR "${PROJ_LIB_SUBDIR}")
 set(DEFAULT_DATADIR "${PROJ_DATA_SUBDIR}")
 set(DEFAULT_DOCDIR "${PROJ_DOC_SUBDIR}")
 set(DEFAULT_INCLUDEDIR "${PROJ_INCLUDE_SUBDIR}")
+set(DEFAULT_CMAKE_CONFIGDIR "${PROJ_CMAKE_CONFIG_SUBDIR}")
 
 
-- 
2.9.2.windows.1