# http://www.cmake.org/Wiki/CMake_Useful_Variables :
# CMAKE_BUILD_TYPE
#    Choose the type of build. CMake has default flags for these:
#
#    * None (CMAKE_C_FLAGS or CMAKE_CXX_FLAGS used)
#    * Debug (CMAKE_C_FLAGS_DEBUG or CMAKE_CXX_FLAGS_DEBUG)
#    * Release (CMAKE_C_FLAGS_RELEASE or CMAKE_CXX_FLAGS_RELEASE)
#    * RelWithDebInfo (CMAKE_C_FLAGS_RELWITHDEBINFO or CMAKE_CXX_FLAGS_RELWITHDEBINFO
#    * MinSizeRel (CMAKE_C_FLAGS_MINSIZEREL or CMAKE_CXX_FLAGS_MINSIZEREL)

# Setting CXX Flag /MD or /MT and POSTFIX values i.e MDd / MD / MTd / MT / d
#
# For visual studio the library naming is as following:
#  Dynamic libraries:
#   - PocoX.dll  for release library
#   - PocoXd.dll for debug library
#
#  Static libraries:
#   - PocoXmd.lib for /MD release build
#   - PocoXtmt.lib for /MT release build
#
#   - PocoXmdd.lib for /MD debug build
#   - PocoXmtd.lib for /MT debug build

if(MSVC)
    if(POCO_MT)
        set(CompilerFlags
            CMAKE_CXX_FLAGS
            CMAKE_CXX_FLAGS_DEBUG
            CMAKE_CXX_FLAGS_RELEASE
            CMAKE_CXX_FLAGS_RELWITHDEBINFO
            CMAKE_CXX_FLAGS_MINSIZEREL
            CMAKE_C_FLAGS
            CMAKE_C_FLAGS_DEBUG
            CMAKE_C_FLAGS_RELEASE
            CMAKE_C_FLAGS_RELWITHDEBINFO
            CMAKE_C_FLAGS_MINSIZEREL
        )
        foreach(CompilerFlag ${CompilerFlags})
            string(REPLACE "/MD" "/MT" ${CompilerFlag} "${${CompilerFlag}}")
        endforeach()

        set(STATIC_POSTFIX "mt" CACHE STRING "Set static library postfix" FORCE)
    else(POCO_MT)
        set(STATIC_POSTFIX "md" CACHE STRING "Set static library postfix" FORCE)
    endif(POCO_MT)
else(MSVC)
    # Other compilers then MSVC don't have a static STATIC_POSTFIX at the moment
    set(STATIC_POSTFIX "" CACHE STRING "Set static library postfix" FORCE)
endif(MSVC)

if (ENABLE_COMPILER_WARNINGS)
    message(STATUS "Enabling additional compiler warning flags.")
    # Additional compiler-specific warning flags
    if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        # using clang
        add_compile_options(-Wall -Wextra -Wpedantic -Wno-unused-parameter)
    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
        # using GCC
        add_compile_options(-Wall -Wextra -Wpedantic -Wno-unused-parameter)
    elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
        # using Visual Studio C++
        add_compile_options(/W4)
    endif()
endif()

# Add a d postfix to the debug libraries
if(BUILD_SHARED_LIBS)
	set(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "Set Debug library postfix" FORCE)
	set(CMAKE_RELEASE_POSTFIX "" CACHE STRING "Set Release library postfix" FORCE)
	set(CMAKE_MINSIZEREL_POSTFIX "" CACHE STRING "Set MinSizeRel library postfix" FORCE)
	set(CMAKE_RELWITHDEBINFO_POSTFIX "" CACHE STRING "Set RelWithDebInfo library postfix" FORCE)
else(BUILD_SHARED_LIBS)
	set(CMAKE_DEBUG_POSTFIX "${STATIC_POSTFIX}d" CACHE STRING "Set Debug library postfix" FORCE)
	set(CMAKE_RELEASE_POSTFIX "${STATIC_POSTFIX}" CACHE STRING "Set Release library postfix" FORCE)
	set(CMAKE_MINSIZEREL_POSTFIX "${STATIC_POSTFIX}" CACHE STRING "Set MinSizeRel library postfix" FORCE)
	set(CMAKE_RELWITHDEBINFO_POSTFIX "${STATIC_POSTFIX}" CACHE STRING "Set RelWithDebInfo library postfix" FORCE)
endif()


# OS Detection
include(CheckTypeSize)
find_package(Cygwin)