38 lines
1.8 KiB
CMake
38 lines
1.8 KiB
CMake
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#=============================================================================
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# Copyright 2012 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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#
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# When using Ninja cl.exe is wrapped by cmcldeps to extract the included
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# headers for dependency tracking.
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#
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# cmcldeps path is set, and cmcldeps needs to know the localized string
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# in front of each include path, so it can remove it.
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#
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if(MSVC_C_ARCHITECTURE_ID AND CMAKE_GENERATOR MATCHES "Ninja" AND CMAKE_C_COMPILER AND CMAKE_COMMAND)
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string(REPLACE "cmake.exe" "cmcldeps.exe" CMAKE_CMCLDEPS_EXECUTABLE ${CMAKE_COMMAND})
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set(showdir ${CMAKE_BINARY_DIR}/CMakeFiles/ShowIncludes)
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file(WRITE ${showdir}/foo.h "\n")
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file(WRITE ${showdir}/main.c "#include \"foo.h\" \nint main(){}\n")
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execute_process(COMMAND ${CMAKE_C_COMPILER} /nologo /showIncludes ${showdir}/main.c
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WORKING_DIRECTORY ${showdir} OUTPUT_VARIABLE showOut)
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string(REPLACE main.c "" showOut1 ${showOut})
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string(REPLACE "/" "\\" header1 ${showdir}/foo.h)
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string(TOLOWER ${header1} header2)
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string(REPLACE ${header2} "" showOut2 ${showOut1})
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string(REPLACE "\n" "" showOut3 ${showOut2})
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set(SET_CMAKE_CMCLDEPS_EXECUTABLE "set(CMAKE_CMCLDEPS_EXECUTABLE \"${CMAKE_CMCLDEPS_EXECUTABLE}\")")
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set(SET_CMAKE_CL_SHOWINCLUDE_PREFIX "set(CMAKE_CL_SHOWINCLUDE_PREFIX \"${showOut3}\")")
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endif()
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