115 lines
4.0 KiB
CMake
115 lines
4.0 KiB
CMake
#.rst:
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# CMakeForceCompiler
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# ------------------
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#
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# Discouraged. Avoid using this module if possible. It will be deprecated
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# by a future version of CMake once alternatives have been provided for all
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# toolchain file use cases.
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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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# The only known remaining use case for these macros is to write toolchain
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# files for cross-compilers that cannot link binaries without special flags or
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# custom linker scripts. These macros cause CMake to skip checks it normally
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# performs as part of enabling a language and introspecting the toolchain.
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# However, skipping these checks may limit some generation functionality.
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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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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 ${id})
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set(CMAKE_C_COMPILER_FORCED TRUE)
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# Set old compiler id variables.
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if(CMAKE_C_COMPILER_ID MATCHES "GNU")
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set(CMAKE_COMPILER_IS_GNUCC 1)
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endif()
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endmacro()
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macro(CMAKE_FORCE_CXX_COMPILER compiler id)
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set(CMAKE_CXX_COMPILER "${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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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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