ed77504d89
This module was added by commit v2.6.0~1489 (...supporting embedded compilers..., 2007-07-02) to avoid needing to build the compiler id detection source on toolchains that need special flags or linker files to produce executables. Since then CMake has learned other ways to identify such compilers (e.g. passing vendor-specific version flags and checking for vendor-specific banners in the output). Furthermore, CMake now detects a lot more than just the compiler id during language initialization in order to support things like <LANG>_STANDARD and COMPILE_FEATURES. Therefore CMakeForceCompiler is no longer a viable approach because it skips such detection. One remaining challenge to support toolchains that require special linker files is to build the test for a working compiler, compiler ABI detection binary, and other try_compile cases. This will have to be worked out as such cases are encountered.
113 lines
4.0 KiB
CMake
113 lines
4.0 KiB
CMake
#.rst:
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# CMakeForceCompiler
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# ------------------
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#
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# Deprecated. Do not use.
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#
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# The macros provided by this module were once intended for use by
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# cross-compiling toolchain files when CMake was not able to automatically
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# detect the compiler identification. Since the introduction of this module,
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# CMake's compiler identification capabilities have improved and can now be
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# taught to recognize any compiler. Furthermore, the suite of information
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# CMake detects from a compiler is now too extensive to be provided by
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# toolchain files using these macros.
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#
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# -------------------------------------------------------------------------
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#
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# Macro CMAKE_FORCE_C_COMPILER has the following signature:
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#
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# ::
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#
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# CMAKE_FORCE_C_COMPILER(<compiler> <compiler-id>)
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#
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# It sets CMAKE_C_COMPILER to the given compiler and the cmake internal
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# variable CMAKE_C_COMPILER_ID to the given compiler-id. It also
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# bypasses the check for working compiler and basic compiler information
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# tests.
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#
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# Macro CMAKE_FORCE_CXX_COMPILER has the following signature:
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#
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# ::
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#
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# CMAKE_FORCE_CXX_COMPILER(<compiler> <compiler-id>)
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#
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# It sets CMAKE_CXX_COMPILER to the given compiler and the cmake
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# internal variable CMAKE_CXX_COMPILER_ID to the given compiler-id. It
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# also bypasses the check for working compiler and basic compiler
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# information tests.
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#
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# Macro CMAKE_FORCE_Fortran_COMPILER has the following signature:
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#
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# ::
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#
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# CMAKE_FORCE_Fortran_COMPILER(<compiler> <compiler-id>)
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#
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# It sets CMAKE_Fortran_COMPILER to the given compiler and the cmake
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# internal variable CMAKE_Fortran_COMPILER_ID to the given compiler-id.
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# It also bypasses the check for working compiler and basic compiler
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# information tests.
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#
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# So a simple toolchain file could look like this:
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#
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# ::
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#
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# include (CMakeForceCompiler)
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# set(CMAKE_SYSTEM_NAME Generic)
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# CMAKE_FORCE_C_COMPILER (chc12 MetrowerksHicross)
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# CMAKE_FORCE_CXX_COMPILER (chc12 MetrowerksHicross)
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#=============================================================================
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# Copyright 2007-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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macro(CMAKE_FORCE_C_COMPILER compiler id)
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message(DEPRECATION "The CMAKE_FORCE_C_COMPILER macro is deprecated. "
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"Instead just set CMAKE_C_COMPILER and allow CMake to identify the compiler.")
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set(CMAKE_C_COMPILER "${compiler}")
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set(CMAKE_C_COMPILER_ID_RUN TRUE)
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set(CMAKE_C_COMPILER_ID ${id})
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set(CMAKE_C_COMPILER_FORCED TRUE)
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# Set old compiler id variables.
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if(CMAKE_C_COMPILER_ID MATCHES "GNU")
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set(CMAKE_COMPILER_IS_GNUCC 1)
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endif()
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endmacro()
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macro(CMAKE_FORCE_CXX_COMPILER compiler id)
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message(DEPRECATION "The CMAKE_FORCE_CXX_COMPILER macro is deprecated. "
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"Instead just set CMAKE_CXX_COMPILER and allow CMake to identify the compiler.")
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set(CMAKE_CXX_COMPILER "${compiler}")
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set(CMAKE_CXX_COMPILER_ID_RUN TRUE)
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set(CMAKE_CXX_COMPILER_ID ${id})
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set(CMAKE_CXX_COMPILER_FORCED TRUE)
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# Set old compiler id variables.
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if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
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set(CMAKE_COMPILER_IS_GNUCXX 1)
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endif()
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endmacro()
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macro(CMAKE_FORCE_Fortran_COMPILER compiler id)
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message(DEPRECATION "The CMAKE_FORCE_Fortran_COMPILER macro is deprecated. "
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"Instead just set CMAKE_Fortran_COMPILER and allow CMake to identify the compiler.")
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set(CMAKE_Fortran_COMPILER "${compiler}")
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set(CMAKE_Fortran_COMPILER_ID_RUN TRUE)
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set(CMAKE_Fortran_COMPILER_ID ${id})
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set(CMAKE_Fortran_COMPILER_FORCED TRUE)
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# Set old compiler id variables.
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if(CMAKE_Fortran_COMPILER_ID MATCHES "GNU")
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set(CMAKE_COMPILER_IS_GNUG77 1)
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endif()
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endmacro()
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