if(NOT DEFINED NASM)
  set(NASM nasm CACHE PATH "Path to NASM/YASM executable")
endif()

if(SIMD_X86_64)
  set(NAFLAGS -fwin64 -DWIN64 -D__x86_64__ -I${CMAKE_SOURCE_DIR}/win/
    -I${CMAKE_CURRENT_SOURCE_DIR}/)
else()
  set(NAFLAGS -fwin32 -DWIN32 -I${CMAKE_SOURCE_DIR}/win/
    -I${CMAKE_CURRENT_SOURCE_DIR}/)
endif()

# This only works if building from the command line.  There is currently no way
# to set a variable's value based on the build type when using the MSVC IDE.
if(CMAKE_BUILD_TYPE STREQUAL "Debug"
  OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
  set(NAFLAGS ${NAFLAGS} -g)
endif()

if(SIMD_X86_64)
  set(SIMD_BASENAMES jfsseflt-64 jccolss2-64 jdcolss2-64 jcgrass2-64
    jcsamss2-64 jdsamss2-64 jdmerss2-64 jcqnts2i-64 jfss2fst-64 jfss2int-64
    jiss2red-64 jiss2int-64 jiss2fst-64 jcqnts2f-64 jiss2flt-64)
  message(STATUS "Building x86_64 SIMD extensions")
else()
  set(SIMD_BASENAMES jsimdcpu jccolmmx jcgrammx jdcolmmx jcsammmx jdsammmx
    jdmermmx jcqntmmx jfmmxfst jfmmxint jimmxred jimmxint jimmxfst jcqnt3dn
    jf3dnflt ji3dnflt jcqntsse jfsseflt jisseflt jccolss2 jcgrass2 jdcolss2
    jcsamss2 jdsamss2 jdmerss2 jcqnts2i jfss2fst jfss2int jiss2red jiss2int
    jiss2fst jcqnts2f jiss2flt)
  message(STATUS "Building i386 SIMD extensions")
endif()

if(MSVC_IDE)
  set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}")
else()
  set(OBJDIR ${CMAKE_CURRENT_BINARY_DIR})
endif()

file(GLOB INC_FILES *.inc)

foreach(file ${SIMD_BASENAMES})
  set(DEPFILE "")
  set(SIMD_SRC ${CMAKE_CURRENT_SOURCE_DIR}/${file}.asm)
  if(${file} MATCHES col)
    set(DEPFILE ${file})
    string(REGEX REPLACE "col" "clr" DEPFILE ${DEPFILE})
    set(DEPFILE ${CMAKE_CURRENT_SOURCE_DIR}/${DEPFILE}.asm)
  endif()
  if(${file} MATCHES mer)
    set(DEPFILE ${file})
    string(REGEX REPLACE "mer" "mrg" DEPFILE ${DEPFILE})
    set(DEPFILE ${CMAKE_CURRENT_SOURCE_DIR}/${DEPFILE}.asm)
  endif()
  if(${file} MATCHES gra)
    set(DEPFILE ${file})
    string(REGEX REPLACE "gra" "gry" DEPFILE ${DEPFILE})
    set(DEPFILE ${CMAKE_CURRENT_SOURCE_DIR}/${DEPFILE}.asm)
  endif()
  set(SIMD_OBJ ${OBJDIR}/${file}.obj)
  add_custom_command(OUTPUT ${SIMD_OBJ}
    DEPENDS ${SIMD_SRC} ${DEPFILE} ${INC_FILES}
    COMMAND ${NASM} ${NAFLAGS} ${SIMD_SRC} -o${SIMD_OBJ})
  set(SIMD_OBJS ${SIMD_OBJS} ${SIMD_OBJ})
endforeach()

set(SIMD_OBJS ${SIMD_OBJS} PARENT_SCOPE)
add_custom_target(simd DEPENDS ${SIMD_OBJS})