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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.
#=============================================================================
#
# 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)
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(CMAKE_CL_SHOWINCLUDE_PREFIX ${showOut3} CACHE STRING "cl.exe's /showInclides prefix" FORCE)
ENDIF()
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