From b6f3b7614bf79c9609abc3258e7f651d762112fb Mon Sep 17 00:00:00 2001
From: Philipp Zabel <philipp.zabel@gmail.com>
Date: Sun, 3 Apr 2016 11:05:12 +0200
Subject: [PATCH] Fix compilation of multithreading example on Debian with
 CMake 3.5.1

Compilation of the multithreading example on Debian with CMake 3.5.1 would
fail with the following error because ${PTHREAD} was not set:
    [ 61%] Linking CXX executable bin/multithreading
    /usr/bin/ld: CMakeFiles/multithreading.dir/multithreading/multithreading.cpp.o: undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'
This patch uses ${CMAKE_THREAD_LIB_INIT} [1] instead, initialized using
find_package(Threads REQUIRED).

[1] https://cmake.org/cmake/help/v2.8.12/cmake.html#module:FindThreads
---
 CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 89b7dd93..b1c39bef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ ELSE(WIN32)
 	find_library(VULKAN_LIB NAMES libvulkan.so PATHS ${CMAKE_SOURCE_DIR}/libs/vulkan)
 	find_package(ASSIMP REQUIRED)
 	find_package(XCB REQUIRED)
+	find_package(Threads REQUIRED)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVK_USE_PLATFORM_XCB_KHR")
 	# Todo : android?
 ENDIF(WIN32)
@@ -44,7 +45,7 @@ function(buildExample EXAMPLE_NAME)
 		target_link_libraries(${EXAMPLE_NAME} ${VULKAN_LIB} ${ASSIMP_LIBRARIES} ${WINLIBS})
 	else(WIN32)
 		add_executable(${EXAMPLE_NAME} ${EXAMPLE_NAME}/${EXAMPLE_NAME}.cpp ${SOURCE})
-		target_link_libraries(${EXAMPLE_NAME} ${VULKAN_LIB} ${ASSIMP_LIBRARIES} ${PTHREAD})
+		target_link_libraries(${EXAMPLE_NAME} ${VULKAN_LIB} ${ASSIMP_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 	endif(WIN32)
 endfunction(buildExample)