1# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
2# file Copyright.txt or https://cmake.org/licensing for details.
3
4
5# determine the compiler to use for RC programs
6# NOTE, a generator may set CMAKE_RC_COMPILER before
7# loading this file to force a compiler.
8# use environment variable RC first if defined by user, next use
9# the cmake variable CMAKE_GENERATOR_RC which can be defined by a generator
10# as a default compiler
11if(NOT CMAKE_RC_COMPILER)
12  # prefer the environment variable RC
13  if(NOT $ENV{RC} STREQUAL "")
14    get_filename_component(CMAKE_RC_COMPILER_INIT $ENV{RC} PROGRAM PROGRAM_ARGS CMAKE_RC_FLAGS_ENV_INIT)
15    if(CMAKE_RC_FLAGS_ENV_INIT)
16      set(CMAKE_RC_COMPILER_ARG1 "${CMAKE_RC_FLAGS_ENV_INIT}" CACHE STRING "Arguments to RC compiler")
17    endif()
18    if(EXISTS ${CMAKE_RC_COMPILER_INIT})
19    else()
20      message(FATAL_ERROR "Could not find compiler set in environment variable RC:\n$ENV{RC}.")
21    endif()
22  endif()
23
24  # next try prefer the compiler specified by the generator
25  if(CMAKE_GENERATOR_RC)
26    if(NOT CMAKE_RC_COMPILER_INIT)
27      set(CMAKE_RC_COMPILER_INIT ${CMAKE_GENERATOR_RC})
28    endif()
29  endif()
30
31  # finally list compilers to try
32  if(CMAKE_RC_COMPILER_INIT)
33    set(CMAKE_RC_COMPILER_LIST ${CMAKE_RC_COMPILER_INIT})
34  else()
35    set(CMAKE_RC_COMPILER_LIST rc)
36  endif()
37
38  # Find the compiler.
39  find_program(CMAKE_RC_COMPILER NAMES ${CMAKE_RC_COMPILER_LIST} DOC "RC compiler")
40  if(CMAKE_RC_COMPILER_INIT AND NOT CMAKE_RC_COMPILER)
41    set(CMAKE_RC_COMPILER "${CMAKE_RC_COMPILER_INIT}" CACHE FILEPATH "RC compiler" FORCE)
42  endif()
43endif()
44
45mark_as_advanced(CMAKE_RC_COMPILER)
46
47get_filename_component(_CMAKE_RC_COMPILER_NAME_WE ${CMAKE_RC_COMPILER} NAME_WE)
48if(_CMAKE_RC_COMPILER_NAME_WE STREQUAL "windres")
49  set(CMAKE_RC_OUTPUT_EXTENSION .obj)
50else()
51  set(CMAKE_RC_OUTPUT_EXTENSION .res)
52endif()
53
54# configure variables set in this file for fast reload later on
55configure_file(${CMAKE_ROOT}/Modules/CMakeRCCompiler.cmake.in
56               ${CMAKE_PLATFORM_INFO_DIR}/CMakeRCCompiler.cmake)
57set(CMAKE_RC_COMPILER_ENV_VAR "RC")
58