SET(CMAKE_SYSTEM_NAME Windows)
SET(CMAKE_SYSTEM_VERSION 5.01)

if(NOT DEFINED floormat-64bit)
    if ("$ENV{LIBPATH}" MATCHES "\\\\lib\\\\x64\\;")
        set(floormat-64bit 1 CACHE BOOL "" FORCE)
    elseif("$ENV{LIBPATH}" MATCHES "\\\\lib\\\\x86\\;")
        set(floormat-64bit 0 CACHE BOOL "" FORCE)
    else()
        message(FATAL_ERROR "can't determine arch")
    endif()
endif()
set(floormat-64bit "${floormat-64bit}" CACHE BOOL "" FORCE)

if(NOT DEFINED floormat-no-static-crt)
    set(floormat-no-static-crt 0)
endif()

if(DEFINED floormat-64bit)
    if(floormat-64bit)
        set(CMAKE_SYSTEM_PROCESSOR AMD64)
    else()
        set(CMAKE_SYSTEM_PROCESSOR x86)
    endif()
endif()

if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT OR CMAKE_INSTALL_PREFIX STREQUAL "")
    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE PATH "" FORCE)
endif()

set(CMAKE_C_COMPILER_INIT cl.exe)
set(CMAKE_CXX_COMPILER_INIT cl.exe)
set(CMAKE_ASM_NASM_COMPILER_INIT nasm.exe)

# search for programs in the host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# don't poison with system compile-time data
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

#add_definitions(-D_ITERATOR_DEBUG_LEVEL=0)
#add_compile_options(-Qvec-report:2)
#add_compile_options(-d2cgsummary -Bt)
add_compile_options(-QIntel-jcc-erratum)
add_definitions(-D_HAS_EXCEPTIONS=0)

if(DEFINED CMAKE_TOOLCHAIN_FILE)
    # ignore cmake warning: Manually-specified variable not used by the project
    set(CMAKE_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}}")
endif()

#set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)

set(CMAKE_C_EXTENSIONS FALSE)
set(CMAKE_CXX_EXTENSIONS FALSE)

set(CMAKE_CROSSCOMPILING 0)

function(sets type)
    set(i 0)
    list(LENGTH ARGN max)
    math(EXPR foo "${max} % 2")
    if(NOT foo EQUAL 0)
        message(FATAL_ERROR "argument count not even")
    endif()
    while(i LESS max)
        list(GET ARGN "${i}" name)
        math(EXPR i "${i} + 1")
        list(GET ARGN "${i}" value)
        math(EXPR i "${i} + 1")
        set(${name} "${value}" CACHE "${type}" "" FORCE)
    endwhile()
endfunction()

if(DEFINED floormat-64bit)
    if(floormat-64bit)
        set(floormat-simd "AVX")
    else()
        set(floormat-simd "SSE2")
    endif()
endif()

set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")

add_link_options(-cgthreads:$ENV{NUMBER_OF_PROCESSORS})

set(_CFLAGS "-diagnostics:caret -Zc:inline -Zc:preprocessor -wd4117 -Zi -Zf -Zo -bigobj -cgthreads1 -vd0 -permissive-")
if(NOT floormat-no-static-crt)
    set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded" CACHE INTERNAL "" FORCE)
else()
    set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreadedDLL" CACHE INTERNAL "" FORCE)
endif()
set(_CXXFLAGS "${_CFLAGS} -Zc:throwingNew -Zc:lambda")
set(_CFLAGS_RELEASE "-O2 -Oit -Oy- -Ob3 -fp:fast -GS- -GF -GL -Gw -Gy")
if(NOT floormat-simd STREQUAL "")
    set(_CFLAGS_RELEASE "${_CFLAGS_RELEASE} -arch:${floormat-simd}")
endif()
set(_CFLAGS_DEBUG "-guard:cf -MTd -Gs0 -RTCs")
set(_CXXFLAGS_RELEASE "${_CFLAGS_RELEASE}")
set(_CXXFLAGS_DEBUG "${_CFLAGS_DEBUG}")

set(_LDFLAGS "-WX")
set(_LDFLAGS_RELEASE "-OPT:REF,ICF=10 -LTCG:INCREMENTAL -DEBUG:FULL")
set(_LDFLAGS_DEBUG "-DEBUG:FULL")

set(_LDFLAGS_STATIC "-WX")
set(_LDFLAGS_STATIC_RELEASE "-LTCG:INCREMENTAL")
set(_LDFLAGS_STATIC_DEBUG "")

set(CMAKE_BUILD_TYPE_INIT "RELEASE" CACHE INTERNAL "")

string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING "" FORCE)
if (NOT CMAKE_BUILD_TYPE STREQUAL "RELEASE" AND NOT CMAKE_BUILD_TYPE STREQUAL "DEBUG")
    set(CMAKE_BUILD_TYPE "RELEASE" CACHE STRING "" FORCE)
endif()
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS RELEASE DEBUG)

foreach(k "" "_${CMAKE_BUILD_TYPE}")
    set("FLAGS_CXX${k}"     "" CACHE STRING "More CMAKE_CXX_FLAGS${k}")
    #set("FLAGS_C${k}"     "" CACHE STRING "More CMAKE_C_FLAGS${k} (almost never used)")
    set("FLAGS_LD${k}"      "" CACHE STRING "More CMAKE_(SHARED|EXE|MODULE)_LINKER_FLAGS${k}")
    set("FLAGS_ARCHIVE${k}" "" CACHE STRING "More CMAKE_STATIC_LINKER_FLAGS${k}")
endforeach()

foreach(k "" _DEBUG _RELEASE)
    #set(CMAKE_STATIC_LINKER_FLAGS${k} "${CMAKE_STATIC_LINKER_FLAGS${k}} ${_LDFLAGS_STATIC${k}}")
    set(CMAKE_STATIC_LINKER_FLAGS${k} "${_LDFLAGS_STATIC${k}} ${FLAGS_ARCHIVE${k}}" CACHE STRING "" FORCE)
endforeach()
foreach(j "" _DEBUG _RELEASE)
    foreach(i MODULE EXE SHARED)
        #set(CMAKE_${i}_LINKER_FLAGS${j} "${CMAKE_${i}_LINKER_FLAGS${j}} ${_LDFLAGS${j}}")
        set(CMAKE_${i}_LINKER_FLAGS${j} "${_LDFLAGS${j}} ${FLAGS_LD${j}}" CACHE STRING "" FORCE)
    endforeach()
endforeach()

foreach(j C CXX)
    foreach(i "" _DEBUG _RELEASE)
        #set(CMAKE_${j}_FLAGS${i} "${CMAKE_${j}_FLAGS${i}} ${_${j}FLAGS${i}}")
        set(CMAKE_${j}_FLAGS${i} "${_${j}FLAGS${i}} ${FLAGS_${j}${i}}" CACHE STRING "" FORCE)
    endforeach()
endforeach()