File GNUInstallDirs.patch of Package backward-cpp

From d4f6779afb1f3278f2e5db9e81c1e8892425edb1 Mon Sep 17 00:00:00 2001
From: Michal Rostecki <mrostecki@suse.de>
Date: Mon, 22 Oct 2018 16:20:08 +0200
Subject: [PATCH] cmake: Use GNUInstallDirs for libdir and includedir

The comon practice in cmake to allow to specify the libdir or
includedir using GNUInstallDirs which introduces the following
options:

* CMAKE_INSTALL_INCLUDEDIR
* CMAKE_INSTALL_LIBDIR

The main motivation behind this change is ability to use /usr/lib64
instead of /usr/lib as a libdir.
---
 CMakeLists.txt | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3ab9d6b..7ebda29 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,6 +23,12 @@
 cmake_minimum_required(VERSION 2.8.12)
 project(backward CXX)
 
+# Introduce variables:
+# * CMAKE_INSTALL_LIBDIR
+# * CMAKE_INSTALL_BINDIR
+# * CMAKE_INSTALL_INCLUDEDIR
+include(GNUInstallDirs)
+
 include(BackwardConfig.cmake)
 
 # check if compiler is nvcc or nvcc_wrapper
@@ -125,9 +131,9 @@ endif()
 
 install(
     FILES "backward.hpp"
-    DESTINATION ${CMAKE_INSTALL_PREFIX}/include
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 install(
     FILES "BackwardConfig.cmake"
-    DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/backward
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/backward
 )
-- 
2.19.0