use cleaner way of depending upon pthreads

Author: RichardWarburton

.gitignore

@@ -33,6 +33,7 @@ CMakeCache.txt
 Makefile
 binaries
 codecs
+Testing
 
 # Mac
 .DS_Store

CMakeLists.txt

@@ -34,7 +34,7 @@ ExternalProject_Get_Property(gtest binary_dir)
 set(GTEST_BINARY_DIR ${binary_dir})
 
 if(UNIX)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98 -Wall -Ofast -DNDEBUG -pthread")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98 -Wall -Ofast -DNDEBUG")
 endif()
 
 if(APPLE)
@@ -57,6 +57,8 @@ message("latest SBE jar found: ${SBE_JAR}")
 set(CODEC_TARGET_DIR "${CMAKE_CURRENT_BINARY_DIR}/codecs")
 set(CODEC_SCHEMA_DIR "${CMAKE_CURRENT_SOURCE_DIR}/test/resources")
 
+find_package(Threads)
+
 include_directories(
 ${GTEST_SOURCE_DIR}/include
 ${CMAKE_CURRENT_SOURCE_DIR}/main/cpp

test/cpp/CMakeLists.txt

@@ -21,7 +21,7 @@ set(GTEST_LIBS
 
 function(sbe_test name)
 add_executable("${name}" "${name}.cpp")
-target_link_libraries("${name}" sbe ${GTEST_LIBS})
+target_link_libraries("${name}" sbe ${GTEST_LIBS} ${CMAKE_THREAD_LIBS_INIT})
 add_test(NAME ${name} COMMAND ${name} WORKING_DIRECTORY ${CODEC_TARGET_DIR})
 if(${ARGC} GREATER 1)
 add_dependencies(${name} ${ARGV1})