Improve CmakeBuildsystem to define spdlog library depednecy on Target only one time.

on Mingw use Boost thread package.

CMakeLists.txt

@@ -57,6 +57,14 @@ target_include_directories(
     "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
 )
+#Setting thread dependency to Target spdlog, neded for examples,bench,tests
+IF ( MINGW )
+FIND_PACKAGE( Boost 1.62  REQUIRED COMPONENTS thread)
+target_link_libraries(spdlog INTERFACE Boost::thread )
+else()
+find_package(Threads REQUIRED)
+target_link_libraries(spdlog INTERFACE Threads::Threads )
+endif()
 
 set(HEADER_BASE "${CMAKE_CURRENT_SOURCE_DIR}/include")
 

bench/CMakeLists.txt

@@ -33,16 +33,15 @@ if(NOT TARGET spdlog)
   find_package(spdlog CONFIG REQUIRED)
 endif()
 
-find_package(Threads REQUIRED)
 
 add_executable(bench bench.cpp)
-target_link_libraries(bench spdlog::spdlog Threads::Threads -flto)
+target_link_libraries(bench spdlog::spdlog)
 
 add_executable(async_bench async_bench.cpp)
-target_link_libraries(async_bench spdlog::spdlog Threads::Threads)
+target_link_libraries(async_bench spdlog::spdlog)
 
 add_executable(latency latency.cpp)
-target_link_libraries(latency spdlog::spdlog Threads::Threads)
+target_link_libraries(latency spdlog::spdlog)
 
 
 

example/CMakeLists.txt

@@ -32,10 +32,10 @@ endif()
 find_package(Threads REQUIRED)
 
 add_executable(example example.cpp)
-target_link_libraries(example spdlog::spdlog Threads::Threads)
+target_link_libraries(example spdlog::spdlog)
 
 add_executable(multisink multisink.cpp)
-target_link_libraries(multisink spdlog::spdlog Threads::Threads)
+target_link_libraries(multisink spdlog::spdlog)
 
 enable_testing()
 file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/logs")

tests/CMakeLists.txt

@@ -1,6 +1,5 @@
 project(spdlog-utests CXX)
 enable_testing()
-find_package(Threads REQUIRED)
 
 set(SPDLOG_UTESTS_SOURCES
     errors.cpp
@@ -17,7 +16,6 @@ set(SPDLOG_UTESTS_SOURCES
     main.cpp)
 
 add_executable(${PROJECT_NAME} ${SPDLOG_UTESTS_SOURCES})
-target_link_libraries(${PROJECT_NAME} PRIVATE Threads::Threads)
 target_link_libraries(${PROJECT_NAME} PRIVATE spdlog::spdlog)
 
 add_test(NAME ${PROJECT_NAME} COMMAND ${PROJECT_NAME})