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From 329a7be631b33294d9cf3d58e8cdeb62e0aa993c Mon Sep 17 00:00:00 2001
From: Philip A Cook <cookpa@pennmedicine.upenn.edu>
Date: Fri, 26 Jun 2020 18:23:08 +0000
Subject: [PATCH] ENH: Use GNUInstallDirs CMake module

Trying to enable installation to the correct lib dir for each platform
---
 Common.cmake            |  7 +++++--
 Examples/CMakeLists.txt | 32 ++++++++++++++++----------------
 2 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/Common.cmake b/Common.cmake
index 5e52d7f1..1e604113 100644
--- a/Common.cmake
+++ b/Common.cmake
@@ -103,8 +103,6 @@ if(PLATFORM_CHECK)
   endif()
 endif()
 
-
-
 #-------------------------------------------------------------------------
 # Augment compiler flags
 #-------------------------------------------------------------------------
@@ -124,3 +122,8 @@ if(NOT CMAKE_POSITION_INDEPENDENT_CODE)
   set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 endif()
 endif()
+
+#-------------------------------------------------------------------------
+# Define install dirs for different platforms
+#-------------------------------------------------------------------------
+include(GNUInstallDirs)
diff --git a/Examples/CMakeLists.txt b/Examples/CMakeLists.txt
index 61781f56..cb352748 100644
--- a/Examples/CMakeLists.txt
+++ b/Examples/CMakeLists.txt
@@ -1,4 +1,4 @@
-SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
 ## Note that the antsUtilities can always be built static.  It will then be linked
 ## Directly into the other libraries.
 add_library(antsUtilities antsUtilities.cxx
@@ -14,11 +14,11 @@ add_library(antsUtilities antsUtilities.cxx
             )
 target_link_libraries(antsUtilities ${ITK_LIBRARIES} )
 install(TARGETS antsUtilities
-    RUNTIME DESTINATION bin
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
     COMPONENT RUNTIME_antsUtilities
-    LIBRARY DESTINATION lib
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     COMPONENT RUNTIME_antsUtilities
-    ARCHIVE DESTINATION lib
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
     COMPONENT DEVELOPMENT_antsUtilities
   )
 
@@ -34,22 +34,22 @@ macro(STATIC_ANTS_BUILD ANTS_FUNCTION_NAME EXTRA_LIBS)
 
   if (ANTS_INSTALL_LIBS_ONLY)
     install(TARGETS l_${ANTS_FUNCTION_NAME}
- #    RUNTIME DESTINATION bin
+ #    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
  #    COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      LIBRARY DESTINATION lib
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      ARCHIVE DESTINATION lib
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT DEVELOPMENT_${ANTS_FUNCTION_NAME}
     )
   else()
     add_executable( ${ANTS_FUNCTION_NAME} cli_${ANTS_FUNCTION_NAME}.cxx )
     target_link_libraries( ${ANTS_FUNCTION_NAME} l_${ANTS_FUNCTION_NAME} )
     install(TARGETS l_${ANTS_FUNCTION_NAME} ${ANTS_FUNCTION_NAME}
-      RUNTIME DESTINATION bin
+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      LIBRARY DESTINATION lib
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      ARCHIVE DESTINATION lib
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT DEVELOPMENT_${ANTS_FUNCTION_NAME}
     )
   endif()
@@ -68,11 +68,11 @@ macro(DYNAMIC_ANTS_BUILD ANTS_FUNCTION_NAME EXTRA_LIBS)
 
   if (ANTS_INSTALL_LIBS_ONLY)
     install(TARGETS l_${ANTS_FUNCTION_NAME}
-  #   RUNTIME DESTINATION bin
+  #   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
   #   COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      LIBRARY DESTINATION lib
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      ARCHIVE DESTINATION lib
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT DEVELOPMENT_${ANTS_FUNCTION_NAME}
   )
   else()
@@ -80,11 +80,11 @@ macro(DYNAMIC_ANTS_BUILD ANTS_FUNCTION_NAME EXTRA_LIBS)
     target_link_libraries( ${ANTS_FUNCTION_NAME} l_${ANTS_FUNCTION_NAME} )
 
     install(TARGETS l_${ANTS_FUNCTION_NAME} ${ANTS_FUNCTION_NAME}
-      RUNTIME DESTINATION bin
+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      LIBRARY DESTINATION lib
+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT RUNTIME_${ANTS_FUNCTION_NAME}
-      ARCHIVE DESTINATION lib
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
       COMPONENT DEVELOPMENT_${ANTS_FUNCTION_NAME}
     )
   endif()