kBuild/units/vccprecomp.kmk

   1 # $Id$
   2 ## @file
   3 # kBuild Unit - Target Level Precompiled Headers for Visual C++.
   4 #
   5
   6 #
   7 # Copyright (c) 2016-2019 knut st. osmundsen <bird-kBuild-spam-xviiv@anduin.net>
   8 #
   9 # This file is part of kBuild.
  10 #
  11 # kBuild is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 2 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # kBuild is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with kBuild; if not, write to the Free Software
  23 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24 #
  25 #
  26 # As a special exception you are granted permission to include this file, via
  27 # the kmk include directive, as you wish without this in itself causing the
  28 # resulting makefile, program or whatever to be covered by the GPL license.
  29 # This exception does not however invalidate any other reasons why the makefile,
  30 # program, whatever should not be covered the GPL.
  31 #
  32 #
  33
  34
  35 UNIT_vccprecomp = Target level precompiled Headers for Visual C++
  36
  37 #
  38 # Early target processing pass #1.
  39 #
  40 # This set the internal _VCC_PCH_FILE and VCC_COMMON_OBJ_PDB properties,
  41 # which will be picked up by the VCCxxx tool.
  42 #
  43 define def_unit_vccprecomp_target_pre
  44  $(target)_1_VCC_PCH_FILE       := $(outbase)-pch.pch
  45  $(target)_1_VCC_COMMON_OBJ_PDB := $(outbase)-common-obj.pdb
  46 endef
  47
  48 #
  49 # Early target processing pass #2.
  50 #
  51 # This sets up a rule for creating the .pch file after qt5 and similar units
  52 # are done modifying INCS, DEFS and company.  The '-PCH' variant of the VCC
  53 # tool, is defined together with $(pchtool) and allow us to bypass the options
  54 # and dependencies triggered by _1_VCC_PCH_FILE, _1_VCC_COMMON_OBJ_PDB and
  55 # _PCH_HDR, and also make sure we  don't get circular dependencies by way of
  56 # kDepObj and the debug info.
  57 #
  58 define def_unit_vccprecomp_target_pre_2
  59  local pchtool  := $(call _TARGET_TOOL,$(target),PCH)
  60  local source   := $($(target)_PCH_HDR)
  61  $(source)_TOOL := $(pchtool)-PCH
  62  local suff     := $(suffix $(source))
  63  local type     := CXX
  64  $(kb-src-one 4)
  65 endef
  66