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#=============================================================================
# Copyright 2012 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
#
# When using Ninja cl.exe is wrapped by cmcldeps to extract the included
# headers for dependency tracking.
#
# cmcldeps path is set, and cmcldeps needs to know the localized string
# in front of each include path, so it can remove it.
#
if(MSVC_C_ARCHITECTURE_ID AND CMAKE_GENERATOR MATCHES "Ninja" AND CMAKE_C_COMPILER AND CMAKE_COMMAND)
string(REPLACE "cmake.exe" "cmcldeps.exe" CMAKE_CMCLDEPS_EXECUTABLE ${CMAKE_COMMAND})
set(showdir ${CMAKE_BINARY_DIR}/CMakeFiles/ShowIncludes)
file(WRITE ${showdir}/foo.h "\n")
file(WRITE ${showdir}/main.c "#include \"foo.h\" \nint main(){}\n")
execute_process(COMMAND ${CMAKE_C_COMPILER} /nologo /showIncludes ${showdir}/main.c
WORKING_DIRECTORY ${showdir} OUTPUT_VARIABLE showOut)
string(REPLACE main.c "" showOut1 ${showOut})
string(REPLACE "/" "\\" header1 ${showdir}/foo.h)
string(TOLOWER ${header1} header2)
string(REPLACE ${header2} "" showOut2 ${showOut1})
string(REPLACE "\n" "" showOut3 ${showOut2})
set(SET_CMAKE_CMCLDEPS_EXECUTABLE "set(CMAKE_CMCLDEPS_EXECUTABLE \"${CMAKE_CMCLDEPS_EXECUTABLE}\")")
set(SET_CMAKE_CL_SHOWINCLUDE_PREFIX "set(CMAKE_CL_SHOWINCLUDE_PREFIX \"${showOut3}\")")
endif()
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