# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.


# search for additional tools required for C/C++ (and other languages ?)
#
# If the internal cmake variable _CMAKE_TOOLCHAIN_PREFIX is set, this is used
# as prefix for the tools (e.g. arm-elf-gcc etc.)
# If the cmake variable _CMAKE_TOOLCHAIN_LOCATION is set, the compiler is
# searched only there. The other tools are at first searched there, then
# also in the default locations.
#
# Sets the following variables:
#   CMAKE_AR
#   CMAKE_RANLIB
#   CMAKE_LINKER
#   CMAKE_STRIP
#   CMAKE_INSTALL_NAME_TOOL

# on UNIX, cygwin and mingw

if(CMAKE_LINKER)
  # we only get here if CMAKE_LINKER was specified using -D or a pre-made CMakeCache.txt
  # (e.g. via ctest) or set in CMAKE_TOOLCHAIN_FILE
  # find the linker in the PATH if necessary
  get_filename_component(_CMAKE_USER_LINKER_PATH "${CMAKE_LINKER}" PATH)
  if(NOT _CMAKE_USER_LINKER_PATH)
    find_program(CMAKE_LINKER_WITH_PATH NAMES ${CMAKE_LINKER} HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
    if(CMAKE_LINKER_WITH_PATH)
      set(CMAKE_LINKER ${CMAKE_LINKER_WITH_PATH})
      get_property(_CMAKE_LINKER_CACHED CACHE CMAKE_LINKER PROPERTY TYPE)
      if(_CMAKE_LINKER_CACHED)
        set(CMAKE_LINKER "${CMAKE_LINKER}" CACHE STRING "Default Linker" FORCE)
      endif()
      unset(_CMAKE_LINKER_CACHED)
    endif()
    unset(CMAKE_LINKER_WITH_PATH CACHE)
  endif()
endif()

# if it's the MS C/CXX compiler, search for link
if("x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_SIMULATE_ID}" STREQUAL "xMSVC"
   OR "x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_ID}" STREQUAL "xMSVC"
   OR (CMAKE_HOST_WIN32 AND "x${CMAKE_${_CMAKE_PROCESSING_LANGUAGE}_COMPILER_ID}" STREQUAL "xPGI")
   OR (CMAKE_GENERATOR MATCHES "Visual Studio"
       AND NOT CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android"))

  find_program(CMAKE_LINKER NAMES link HINTS ${_CMAKE_TOOLCHAIN_LOCATION})

  mark_as_advanced(CMAKE_LINKER)

# in all other cases search for ar, ranlib, etc.
else()
  if(CMAKE_C_COMPILER_EXTERNAL_TOOLCHAIN)
    set(_CMAKE_TOOLCHAIN_LOCATION ${_CMAKE_TOOLCHAIN_LOCATION} ${CMAKE_C_COMPILER_EXTERNAL_TOOLCHAIN}/bin)
  endif()
  if(CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN)
    set(_CMAKE_TOOLCHAIN_LOCATION ${_CMAKE_TOOLCHAIN_LOCATION} ${CMAKE_CXX_COMPILER_EXTERNAL_TOOLCHAIN}/bin)
  endif()
  find_program(CMAKE_AR NAMES ${_CMAKE_TOOLCHAIN_PREFIX}ar${_CMAKE_TOOLCHAIN_SUFFIX} HINTS ${_CMAKE_TOOLCHAIN_LOCATION})

  find_program(CMAKE_RANLIB NAMES ${_CMAKE_TOOLCHAIN_PREFIX}ranlib HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
  if(NOT CMAKE_RANLIB)
    set(CMAKE_RANLIB : CACHE INTERNAL "noop for ranlib")
  endif()

  find_program(CMAKE_STRIP NAMES ${_CMAKE_TOOLCHAIN_PREFIX}strip${_CMAKE_TOOLCHAIN_SUFFIX} HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
  find_program(CMAKE_LINKER NAMES ${_CMAKE_TOOLCHAIN_PREFIX}ld HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
  find_program(CMAKE_NM NAMES ${_CMAKE_TOOLCHAIN_PREFIX}nm HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
  find_program(CMAKE_OBJDUMP NAMES ${_CMAKE_TOOLCHAIN_PREFIX}objdump HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
  find_program(CMAKE_OBJCOPY NAMES ${_CMAKE_TOOLCHAIN_PREFIX}objcopy HINTS ${_CMAKE_TOOLCHAIN_LOCATION})

  mark_as_advanced(CMAKE_AR CMAKE_RANLIB CMAKE_STRIP CMAKE_LINKER CMAKE_NM CMAKE_OBJDUMP CMAKE_OBJCOPY)

endif()

if(CMAKE_PLATFORM_HAS_INSTALLNAME)
  find_program(CMAKE_INSTALL_NAME_TOOL NAMES install_name_tool HINTS ${_CMAKE_TOOLCHAIN_LOCATION})

  if(NOT CMAKE_INSTALL_NAME_TOOL)
    message(FATAL_ERROR "Could not find install_name_tool, please check your installation.")
  endif()

  mark_as_advanced(CMAKE_INSTALL_NAME_TOOL)
endif()