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header.kmk@ 581

Last change on this file since 581 was 578, checked in by bird, 19 years ago
Did code changes for unix installation. Will do install goals when creating the gentoo ebuild. references #6
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 16.1 KB

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1	# $Id: header.kmk 578 2006-11-23 10:36:46Z bird $
2	## @file
3	#
4	# kBuild - File included at top of makefile.
5	#
6	# Copyright (c) 2004-2005 knut st. osmundsen <bird-srcspam@anduin.net>
7	#
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
27	ifndef __header_kmk__
28	# start-of-file-content
29
30	#
31	# default rule
32	#
33	all: all_recursive
34
35	#
36	# The FORCE rule.
37	#
38	FORCE:
39
40	#
41	# Try avoid inference rules.
42	#
43	.SUFFIXES:
44	SUFFIXES :=
45
46
47	#
48	# General purpose macros.
49	#
50
51	## get last word in a list.
52	# @returns last word in $1.
53	# @param $1 Word list.
54	lastword = $(word $(words $(1)), $(1))
55
56	##
57	# Newline character(s).
58	define NL
59
60
61	endef
62
63	##
64	# Tab character.
65	TAB := $(subst ., ,.)
66
67	##
68	# Space character.
69	SP := $(subst ., ,.)
70
71	##
72	# Checks if two strings are equal.
73	# @returns blank if equal
74	# @returns non-blank if not equal.
75	# @param $1 String 1.
76	# @param $2 String 2
77	STRCMP = $( todo )
78
79	#
80	# Assert build type.
81	#
82	ifndef BUILD_TYPE
83	ifndef BUILD_MODE
84	$(error kBuild: You must define BUILD_TYPE!)
85	endif
86	BUILD_TYPE := $(BUILD_MODE)
87	endif
88	ifeq ($(BUILD_TYPE),DEBUG)
89	BUILD_TYPE := debug
90	endif
91	ifeq ($(BUILD_TYPE),RELEASE)
92	BUILD_TYPE := release
93	endif
94	ifeq ($(BUILD_TYPE),PROFILE)
95	BUILD_TYPE := profile
96	endif
97
98
99	#
100	# Assert build platform.
101	#
102	ifndef BUILD_PLATFORM
103	$(error kBuild: BUILD_PLATFORM is undefined!)
104	else
105	BUILD_PLATFORM := $(strip $(BUILD_PLATFORM))
106	ifneq ($(words $(BUILD_PLATFORM))$(filter-out darwin freebsd l4 linux nt os2 win win32 win64,$(BUILD_PLATFORM)),1)
107	# OS/2 (have uppercase legacy)
108	ifeq ($(BUILD_PLATFORM),OS2)
109	$(error kBuild: BUILD_PLATFORM must be all lowercase!)
110	endif
111	$(error kBuild: BUILD_PLATFORM value '$(BUILD_PLATFORM)' was not recognized!)
112	endif
113	endif
114
115	# Fill in defaults if needed.
116	ifndef BUILD_PLATFORM_ARCH
117	ifeq ($(filter-out win64,$(BUILD_PLATFORM)),)
118	BUILD_PLATFORM_ARCH := amd64
119	else
120	BUILD_PLATFORM_ARCH := x86
121	endif
122	endif
123	ifndef BUILD_PLATFORM_CPU
124	ifeq ($(filter-out amd64,$(BUILD_PLATFORM_ARCH)),)
125	BUILD_PLATFORM_CPU:= k8
126	else
127	BUILD_PLATFORM_CPU:= i586
128	endif
129	endif
130
131
132	#
133	# Assert target platform.
134	#
135	ifndef BUILD_TARGET
136	# not defined, set to the same as build platform
137	BUILD_TARGET := $(BUILD_PLATFORM)
138	else
139	BUILD_TARGET := $(strip $(BUILD_TARGET))
140	ifneq ($(words $(BUILD_TARGET))$(filter-out darwin freebsd l4 linux nt os2 win win32 win64,$(BUILD_TARGET)),1)
141	# OS/2 (have uppercase legacy)
142	ifeq ($(BUILD_TARGET),OS2)
143	$(error kBuild: BUILD_TARGET must be all lowercase!)
144	endif
145	$(error kBuild: BUILD_TARGET value '$(BUILD_TARGET)' was not recognized!)
146	endif
147	endif
148
149	# Fill in defaults if needed.
150	ifndef BUILD_TARGET_ARCH
151	BUILD_TARGET_ARCH := x86
152	endif
153	ifndef BUILD_TARGET_CPU
154	BUILD_TARGET_CPU := i586
155	endif
156
157	# Adjust the DEPTH definition first
158	ifeq ($(strip $(DEPTH)),)
159	DEPTH := .
160	endif
161
162	#
163	# Common definitions.
164	#
165	PATH_CURRENT := $(abspath $(CURDIR))
166	ifneq ($(strip $(SUB_DEPTH)),)
167	PATH_SUB_CURRENT := $(abspath $(PATH_CURRENT)/$(SUB_DEPTH))
168	else
169	PATH_SUB_CURRENT := $(PATH_CURRENT)
170	endif
171	PATH_ROOT := $(abspath $(PATH_CURRENT)/$(DEPTH))
172
173	# Subdirectory relative to the root.
174	ifneq ($(PATH_ROOT),$(PATH_CURRENT))
175	CURSUBDIR := $(patsubst $(PATH_ROOT)/%,%,$(PATH_SUB_CURRENT))
176	else
177	CURSUBDIR := .
178	endif
179
180	# Output directories.
181	ifndef PATH_OUT_BASE
182	PATH_OUT_BASE := $(PATH_ROOT)/out
183	endif
184	ifndef PATH_OUT
185	ifdef BUILD_TARGET_SUB # (BUILD_TARGET_SUB is not currently recognized by kBuild in any other places.)
186	PATH_OUT := $(PATH_OUT_BASE)/$(BUILD_TARGET).$(BUILD_TARGET_ARCH).$(BUILD_TARGET_SUB)/$(BUILD_TYPE)
187	else
188	PATH_OUT := $(PATH_OUT_BASE)/$(BUILD_TARGET).$(BUILD_TARGET_ARCH)/$(BUILD_TYPE)
189	endif
190	endif # !define PATH_OUT
191	PATH_OBJ = $(PATH_OUT)/obj
192	PATH_TARGET = $(PATH_OBJ)/$(CURSUBDIR)
193	PATH_INS = $(PATH_OUT)
194	PATH_BIN = $(PATH_INS)/bin
195	PATH_DLL = $(PATH_INS)/bin
196	PATH_SYS = $(PATH_INS)/bin
197	PATH_LIB = $(PATH_INS)/lib
198	PATH_DOC = $(PATH_INS)/doc
199
200	# Usually kBuild is external to the source tree.
201	ifndef PATH_KBUILD
202	PATH_KBUILD := $(PATH_ROOT)/kBuild
203	endif
204	PATH_KBUILD := $(abspath $(PATH_KBUILD))
205	# kBuild files which might be of interest.
206	FILE_KBUILD_HEADER := $(PATH_KBUILD)/header.kmk
207	FILE_KBUILD_CONFIG := $(PATH_KBUILD)/config.kmk
208	FILE_KBUILD_FOOTER := $(PATH_KBUILD)/footer.kmk
209
210	SUFF_DEP := .dep
211	MAKEFILE := $(firstword $(MAKEFILE_LIST))
212
213
214	#
215	# Check make version.
216	#
217	ifdef KMK_VERSION
218	ifneq ($(KBUILD_VERSION_MAJOR).$(KBUILD_VERSION_MINOR),0.1)
219	ifneq ($(KBUILD_VERSION_MAJOR),0)
220	$(warning kBuild: kmk major version mismatch, expected '0' found '$(KBUILD_VERSION_MAJOR)'!)
221	else
222	$(warning kBuild: kmk minor version mismatch, expected '1' found '$(KBUILD_VERSION_MINOR)'!)
223	endif
224	endif
225	else
226	# Vanilla GNU Make. Only supported for kBuild bootstrapping. Disable some features to make it work.
227	NO_COMPILE_CMDS_DEPS:= 1
228	NO_LINK_CMDS_DEPS := 1
229	sinclude $(PATH_KBUILD)/StampOutPredefines.kmk
230	ifndef IS_BOOTSTRAPPING_KBUILD_NOW
231	$(warning kBuild: Using vanilla GNU make isn't safe for anything but kBuild bootstrapping!)
232	endif
233	endif
234
235
236	#
237	# Build platform setup.
238	#
239	# OS/2
240	ifeq ($(BUILD_PLATFORM),os2)
241	EXEC_X86_WIN32 := innopec.exe
242	HOSTSUFF_EXE := .exe
243	endif
244
245	# Linux
246	ifeq ($(BUILD_PLATFORM),linux)
247	EXEC_X86_WIN32 := wine
248	HOSTSUFF_EXE :=
249	endif
250
251	# Win, Win32, Win64, NT.
252	ifeq ($(filter-out win32 win64 win nt,$(BUILD_PLATFORM)),)
253	EXEC_X86_WIN32 :=
254	HOSTSUFF_EXE := .exe
255	endif
256
257	# FreeBSD
258	ifeq ($(BUILD_PLATFORM),freebsd)
259	EXEC_X86_WIN32 := wine
260	HOSTSUFF_EXE :=
261	endif
262
263	# Darwin / Mac OS X
264	ifeq ($(BUILD_PLATFORM),darwin)
265	EXEC_X86_WIN32 := false
266	HOSTSUFF_EXE :=
267	endif
268
269	ifndef PATH_KBUILD_BIN
270	PATH_KBUILD_BIN := $(PATH_KBUILD)/bin/$(BUILD_PLATFORM_ARCH).$(BUILD_PLATFORM)
271	ifeq ($(wildcard $(PATH_KBUILD_BIN)/kmk_ash$(HOSTSUFF_EXE)),)
272	ifeq ($(BUILD_TARGET_ARCH),amd64)
273	PATH_KBUILD_BIN := $(PATH_KBUILD)/bin/x86.$(BUILD_PLATFORM)
274	endif
275	ifeq ($(wildcard $(PATH_KBUILD_BIN)/kmk_ash$(HOSTSUFF_EXE)),)
276	ifeq ($(filter-out win64 win nt ,$(BUILD_PLATFORM)),)
277	PATH_KBUILD_BIN := $(PATH_KBUILD)/bin/x86.win32
278	endif
279	endif
280	ifeq ($(wildcard $(PATH_KBUILD_BIN)/kmk_ash$(HOSTSUFF_EXE)),)
281	# give up
282	PATH_KBUILD_BIN := $(PATH_KBUILD)/bin/$(BUILD_PLATFORM_ARCH).$(BUILD_PLATFORM)
283	endif
284	endif
285	endif
286
287
288	#
289	# Build target setup.
290	#
291	ifeq ($(filter-out win32 win64 win nt os2,$(BUILD_TARGET)),)
292	SUFF_OBJ := .obj
293	SUFF_LIB := .lib
294	SUFF_DLL := .dll
295	SUFF_EXE := .exe
296	SUFF_SYS := .sys
297	SUFF_RES := .res
298	endif
299	ifeq ($(BUILD_TARGET),l4)
300	SUFF_OBJ := .o
301	SUFF_LIB := .a
302	SUFF_DLL := .s.so
303	SUFF_EXE :=
304	SUFF_SYS := .a
305	SUFF_RES :=
306	endif
307	ifeq ($(BUILD_TARGET),darwin)
308	SUFF_OBJ := .o
309	SUFF_LIB := .a
310	SUFF_DLL := .dylib
311	SUFF_EXE :=
312	SUFF_SYS := .a
313	SUFF_RES :=
314	endif
315	ifndef SUFF_OBJ
316	SUFF_OBJ := .o
317	SUFF_LIB := .a
318	SUFF_DLL := .so
319	SUFF_EXE :=
320	SUFF_SYS := .a
321	SUFF_RES :=
322	endif
323
324	#
325	# Standard kBuild tools.
326	#
327	ifeq ($(MAKE),kmk)
328	MAKE := $(PATH_KBUILD_BIN)/kmk$(HOSTSUFF_EXE)
329	endif
330
331	DEP_EXT := $(PATH_KBUILD_BIN)/kDep$(HOSTSUFF_EXE)
332	ifeq ($(filter kDep,$(KMK_BUILTIN)),kDep)
333	DEP := kmk_builtin_kDep
334	else
335	DEP := $(DEP_EXT)
336	endif
337
338	DEP_IDB_EXT := $(PATH_KBUILD_BIN)/kDepIDB$(HOSTSUFF_EXE)
339	ifeq ($(filter kDepPre,$(KMK_BUILTIN)),kDepIDB)
340	DEP_IDB := $(if kmk_builtin_kDepIDB
341	else
342	DEP_IDB := $(DEP_IDB_EXT)
343	endif
344
345	DEP_PRE_EXT := $(PATH_KBUILD_BIN)/kDepPre$(HOSTSUFF_EXE)
346	ifeq ($(filter kDepPre,$(KMK_BUILTIN)),kDepPre)
347	DEP_PRE := $(if kmk_builtin_kDepPre
348	else
349	DEP_PRE := $(DEP_PRE_EXT)
350	endif
351
352	APPEND_EXT := $(PATH_KBUILD_BIN)/kmk_append$(HOSTSUFF_EXE)
353	ifeq ($(filter append,$(KMK_BUILTIN)),append)
354	APPEND := kmk_builtin_append
355	else
356	APPEND := $(APPEND_EXT)
357	endif
358
359	CAT_EXT := $(PATH_KBUILD_BIN)/kmk_cat$(HOSTSUFF_EXE)
360	ifeq ($(filter cat,$(KMK_BUILTIN)),cat)
361	CAT := kmk_builtin_cat
362	else
363	CAT := $(CAT_EXT)
364	endif
365
366	CP_EXT := $(PATH_KBUILD_BIN)/kmk_cp$(HOSTSUFF_EXE)
367	ifeq ($(filter cp,$(KMK_BUILTIN)),cp)
368	CP := kmk_builtin_cp
369	else
370	CP := $(CP_EXT)
371	endif
372
373	ECHO_EXT := $(PATH_KBUILD_BIN)/kmk_echo$(HOSTSUFF_EXE)
374	ifeq ($(filter echo,$(KMK_BUILTIN)),echo)
375	ECHO := kmk_builtin_echo
376	else
377	ECHO := $(ECHO_EXT)
378	endif
379
380	INSTALL_EXT := $(PATH_KBUILD_BIN)/kmk_install$(HOSTSUFF_EXE)
381	ifeq ($(filter install,$(KMK_BUILTIN)),install)
382	INSTALL := kmk_builtin_install
383	else
384	INSTALL := $(INSTALL_EXT)
385	endif
386
387	LN_EXT := $(PATH_KBUILD_BIN)/kmk_ln$(HOSTSUFF_EXE)
388	ifeq ($(filter ln,$(KMK_BUILTIN)),ln)
389	LN := kmk_builtin_ln
390	else
391	LN := $(LN_EXT)
392	endif
393
394	MKDIR_EXT := $(PATH_KBUILD_BIN)/kmk_mkdir$(HOSTSUFF_EXE)
395	ifeq ($(filter mkdir,$(KMK_BUILTIN)),mkdir)
396	MKDIR := kmk_builtin_mkdir
397	else
398	MKDIR := $(MKDIR_EXT)
399	endif
400
401	MV_EXT := $(PATH_KBUILD_BIN)/kmk_mv$(HOSTSUFF_EXE)
402	ifeq ($(filter mv,$(KMK_BUILTIN)),mv)
403	MV := kmk_builtin_mv
404	else
405	MV := $(MV_EXT)
406	endif
407
408	RM_EXT := $(PATH_KBUILD_BIN)/kmk_rm$(HOSTSUFF_EXE)
409	ifeq ($(filter rm,$(KMK_BUILTIN)),rm)
410	RM := kmk_builtin_rm
411	else
412	RM := $(RM_EXT)
413	endif
414
415	SED_EXT := $(PATH_KBUILD_BIN)/kmk_sed$(HOSTSUFF_EXE)
416	ifeq ($(filter sed,$(KMK_BUILTIN)),sed)
417	SED := kmk_builtin_sed
418	else
419	SED := $(SED_EXT)
420	endif
421
422	# Our default shell is the Almquist shell from *BSD.
423	ASH := $(PATH_KBUILD_BIN)/kmk_ash$(HOSTSUFF_EXE)
424	MAKESHELL := $(ASH)
425	SHELL := $(ASH)
426	export SHELL MAKESHELL
427
428	# Symlinking is problematic on some platforms...
429	LN_SYMLINK := $(LN) -s
430
431
432
433	#
434	# Message macros.
435	#
436
437	ifndef BUILD_QUIET
438	ifdef BUILD_DEBUG
439	BUILD_VERBOSE := 9
440	endif
441	MSG_L1 = @$(ECHO) "kBuild: $1"
442	ifdef BUILD_VERBOSE
443	MSG_L2 = @$(ECHO) "kBuild: $1"
444	QUIET :=
445	else
446	QUIET := @
447	MSG_L2 =
448	endif
449	ifdef BUILD_DEBUG
450	MSG_L3 = @$(ECHO) "kBuild: $1"
451	else
452	MSG_L3 =
453	endif
454	else
455	QUIET :=
456	MSG_L1 =
457	MSG_L2 =
458	MSG_L3 =
459	endif
460
461	## ABSPATH - make paths absolute.
462	# This implementation is clumsy and doesn't resolve '..' and '.' components.
463	#
464	# @param $1 The paths to make absolute.
465	ABSPATH = $(abspath $(1))
466
467	## DIRDEP - make create directory dependencies.
468	#
469	# @param $1 The paths to the directories which must be created.
470	DIRDEP = $(foreach path,$(patsubst %/,%,$(1)),$(path)/)
471
472
473	## Cygwin kludge.
474	# This converts /cygdrive/x/% to x:%.
475	#
476	# @param $1 The paths to make native.
477	# @remark This macro is pretty much obsolete since we don't use cygwin base make.
478	ifneq ($(patsubst /cygdrive/%,%,$(CURDIR)),$(CURDIR))
479	CYGPATHMIXED = $(foreach path,$(1)\
480	,$(if $(patsubst /cygdrive/%,,$(path)),$(path),$(patsubst $(strip $(firstword $(subst /, ,$(patsubst /cygdrive/%,%,$(path)))))/%,$(strip $(firstword $(subst /, ,$(patsubst /cygdrive/%,%,$(path))))):/%,$(patsubst /cygdrive/%,%,$(path)))))
481	else
482	CYGPATHMIXED = $(1)
483	endif
484
485	#
486	# Initialize some of the globals which the Config.kmk and
487	# others can add stuff to if they like for processing in the footer.
488	#
489
490	## ALL_TARGET
491	# This is the list of all targets.
492	ALL_TARGETS :=
493
494	## TEMPLATE_PATHS
495	# List a paths (separated by space) where templates can be found.
496	TEMPLATE_PATHS :=
497
498	## TOOL_PATHS
499	# List of paths (separated by space) where tools can be found.
500	TOOL_PATHS :=
501
502	## SDK_PATHS
503	# List of paths (separated by space) where SDKs can be found.
504	SDK_PATHS :=
505
506	## Proritized list of the default makefile when walking subdirectories.
507	# The user can overload this list.
508	DEFAULT_MAKEFILE := Makefile.kmk makefile.kmk Makefile makefile
509
510	## PROPS_SINGLE
511	# The list of non-accumulative target properties.
512	# A Config.kmk file can add it's own properties to this list and kBuild
513	# will do the necessary inheritance from templates to targets.
514	PROPS_SINGLE := TOOL ARTOOL CTOOL CXXTOOL ASTOOL LDTOOL INST NOINST
515
516	## PROPS_DEFERRED
517	# This list of non-accumulative target properties which are functions,
518	# and thus should not be expanded until the very last moment.
519	PROPS_DEFERRED := INSTFUN INSTALLER
520
521	## PROPS_ACCUMULATE
522	# The list of accumulative target properties.
523	# A Config.kmk file can add it's own properties to this list and kBuild
524	# will do the necessary inheritance from templates to targets.
525	PROPS_ACCUMULATE := \
526	SDKS DEFS DEPS INCS SOURCES \
527	COPTS CFLAGS CDEFS CINCS CXXOPTS CXXFLAGS CXXDEFS CXXINCS \
528	ASOPTS ASFLAGS ASDEFS ASINCS \
529	LDFLAGS LIBS LIBPATH \
530	BLD_TYPE BLD_TRG BLD_TRG_ARCH BLD_TRG_CPU \
531	SYSSUFF EXESUFF DLLSUFF LIBSUFF ARLIBSUFF \
532
533
534	## PROPS_TOOLS
535	# This is a subset of the other PROPS
536	PROPS_TOOLS := TOOL CTOOL CXXTOOL ASTOOL ARTOOL LDTOOL
537
538
539	#
540	# Pass configuration.
541	#
542	# The PASS_<passname>_trgs variable is listing the targets.
543	# The PASS_<passname>_vars variable is listing the target variables.
544	# The PASS_<passname>_pass variable is the lowercased passname.
545	#
546
547	## PASS: bldprogs
548	# This pass builds targets which are required for building the rest.
549	PASS_BLDPROGS := Build Programs
550	PASS_BLDPROGS_trgs :=
551	PASS_BLDPROGS_vars := _BLDPROGS
552	PASS_BLDPROGS_pass := bldprogs
553
554	## PASS: libraries
555	# This pass builds library targets.
556	PASS_LIBRARIES := Libraries
557	PASS_LIBRARIES_trgs :=
558	PASS_LIBRARIES_vars := _LIBS _IMPORT_LIBS _OTHER_LIBRARIES
559	PASS_LIBRARIES_pass := libraries
560
561	## PASS: binaries
562	# This pass builds dll targets.
563	PASS_DLLS := DLLs
564	PASS_DLLS_trgs :=
565	PASS_DLLS_vars := _DLLS _OTHER_DLLS
566	PASS_DLLS_pass := dlls
567
568	## PASS: binaries
569	# This pass builds binary targets, i.e. programs, system modules and stuff.
570	PASS_BINARIES := Programs
571	PASS_BINARIES_trgs :=
572	PASS_BINARIES_vars := _PROGRAMS _SYSMODS _OTHER_BINARIES
573	PASS_BINARIES_pass := binaries
574
575	## PASS: others
576	# This pass builds other targets.
577	PASS_OTHERS := Other Stuff
578	PASS_OTHERS_trgs :=
579	PASS_OTHERS_vars := _OTHERS
580	PASS_OTHERS_pass := others
581
582	## PASS: install
583	# This pass installs the built entities to a sandbox area.
584	PASS_INSTALLS := Install
585	PASS_INSTALLS_trgs :=
586	PASS_INSTALLS_vars := _INSTALLS_DIRS _INSTALLS
587	PASS_INSTALLS_pass := installs
588
589	## PASS: packing
590	# This pass processes custom packing rules.
591	PASS_PACKING := Packing
592	PASS_PACKING_trgs :=
593	PASS_PACKING_vars := _PACKING
594	PASS_PACKING_pass := packing
595	#alias
596	packing: pass_packing
597
598	## PASS: clean
599	# This pass removes all generated files.
600	PASS_CLEAN := Clean
601	PASS_CLEAN_trgs := do-clean
602	PASS_CLEAN_vars :=
603	PASS_CLEAN_pass := clean
604	# alias
605	clean: pass_clean
606
607	## PASS: nothing
608	# This pass just walks the tree.
609	PASS_NOTHING := Nothing
610	PASS_NOTHING_trgs := do-nothing
611	PASS_NOTHING_vars :=
612	PASS_NOTHING_pass := nothing
613	# alias
614	nothing: pass_nothing
615
616	## DEFAULT_PASSES
617	# The default passes and their order.
618	DEFAULT_PASSES := BLDPROGS LIBRARIES DLLS BINARIES OTHERS INSTALLS
619
620	## PASSES
621	# The passes that should be defined. This must include
622	# all passes mentioned by DEFAULT_PASSES.
623	PASSES := $(DEFAULT_PASSES) NOTHING CLEAN
624
625
626	#
627	# This is how we find the closest config.kmk.
628	# It's a little hacky but I think it works fine.
629	#
630	_CFGDIR := .
631	_CFGFILES := ./Config.kmk ./config.kmk
632	define def_include_config
633	$(eval _CFGDIR := $(_CFGDIR)/$(dir))
634	_CFGFILES += $(_CFGDIR)/Config.kmk $(_CFGDIR)/config.kmk
635	endef
636	# walk down the _RELATIVE_ path specified by DEPTH.
637	$(foreach dir,$(subst /, ,$(DEPTH)), $(eval $(def_include_config)) )
638	# add the default config file.
639	_CFGFILE := $(firstword $(wildcard $(_CFGFILES) $(FILE_KBUILD_CONFIG)))
640	_CFGFILES :=
641	_CFGDIR :=
642	ifeq ($(_CFGFILE),)
643	$(error kBuild: no Config.kmk file found! Check the DEPTH: DEPTH='$(DEPTH)' PATH_CURRENT='$(PATH_CURRENT)')
644	endif
645
646	# Include the config.kmk we found file (or the default one).
647	include $(_CFGFILE)
648
649
650	# end-of-file-content
651	__header_kmk__ := 1
652	endif # __header_kmk__
653

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