[wxWidgets.git] / src / png / projects / owatcom / pngconfig.mak

# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
# configuration header.  You can ignore this file if you don't need to
# configure libpng; a default configuration will be built.
#
# For more information build libpng.wpj under the IDE and then read the
# generated files:
#
#    config.inf: Basic configuration information for a standard build.
#    pngconfig.dfa: Advanced configuration for non-standard libpng builds.
#
DELETE=rm -f
ECHO=echo
COPY=copy
#
# If your configuration needs to test compiler flags when building
# pnglibconf.h you may need to override the following on the wmake command
# line:
CFLAGS=
CC=wcl386
CPP=$(CC) -pw0
#
# Read awk from the environment if set, else it can be set on the command
# line (the default approach is to set the %awk% environment variable in the
# IDE libpng.wpj 'before' rule - this setting is local.)
!ifdef %awk
AWK=$(%awk)
!endif
#
# pnglibconf.h must exist in the source directory, this is the final rule
# which copies the local built version (and this is the default target for
# this makefile.)
..\..\pnglibconf.h: pnglibconf.h
 $(COPY) pnglibconf.h $@

!ifdef AWK
# CPPFLAGS should contain the options to control the result,
# but DEFS and CFLAGS are also supported here, override
# as appropriate
DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)

pnglibconf.h: pnglibconf.dfn
 $(DELETE) $@ dfn.c dfn1.out dfn2.out
 $(ECHO) $#include "pnglibconf.dfn" >dfn.c
 $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
 $(AWK) -f << dfn1.out >dfn2.out
/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{
 sub(/^.*PNG_DEFN_MAGIC-/, "")
 sub(/ *-PNG_DEFN_END.*$$/, "")
 gsub(/ *@@@ */, "")
 print
}
<<
 $(COPY) dfn2.out $@
 @type << >pngconfig.inf
This is a locally configurable build of libpng.lib; for configuration
instructions consult and edit projects/openwatcom/pngconfig.dfa
<<
 $(DELETE) dfn.c dfn1.out dfn2.out

pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h
 $(DELETE) $@ dfn1.out dfn2.out
 $(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
 $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
 $(COPY) dfn2.out $@
 $(DELETE) dfn1.out dfn2.out

!else
# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
# the required change to the calling convention.
#
# By default libpng is built to use the __cdecl calling convention on
# Windows.  This gives compatibility with MSVC and GCC.  Unfortunately it
# does not work with OpenWatcom because OpenWatcom implements longjmp using
# the __watcall convention (compared with both MSVC and GCC which use __cdecl
# for library functions.)
#
# Thus the default must be changed to build on OpenWatcom and, once changed,
# the result will not be compatible with applications built using other
# compilers (in fact attempts to build will fail at compile time.)
#
pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
 @$(ECHO) .
 @$(ECHO) .
 @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
 @$(ECHO) .
 @$(ECHO) .
 vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
 @$(ECHO) .
 @$(ECHO) .
 @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
 @$(ECHO) .
 @$(ECHO) .
 @type << >pngconfig.inf
This is the default configuration of libpng.lib, if you wish to
change the configuration please consult the instructions in
projects/owatcom/pngconfig.dfa.
<<

!endif

# Make the default files
defaults: .symbolic
 @$(COPY) << config.inf
$# The libpng project is incompletely configured.  To complete configuration
$# please complete the following steps:
$#
$#   1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
$#      locations of the zlib include file zlib.h and the built zlib library,
$#      zlib.lib.
$#
$#   2) If you want to change libpng to a non-standard configuration also
$#      change the definition of 'awk' in the before rule to the name of your
$#      awk command.  For more instructions on configuration read
$#      pngconfig.dfa.
$#
$#   3) Delete this file (config.inf).
<<
 @$(COPY) << pngconfig.dfa
$# pngconfig.dfa: this file contains configuration options for libpng.
$# If emtpy the standard configuration will be built.  For this file to be
$# used a working version of the program 'awk' is required and the program
$# must be identified in the 'before' rule of the project.
$#
$# If you don't already have 'awk', or the version of awk you have seems not
$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
$# awk.)  You can find source code and a built executable (called awk95.exe)
$# here:
$#
$#     http://www.cs.princeton.edu/~bwk/btl.mirror/
$#
$# The executable works just fine.
$#
$# If build issues errors after a change to pngconfig.dfa you have entered
$# inconsistent feature requests, or even malformed requests, in
$# pngconfig.dfa.  The error messages from awk should be comprehensible, but
$# if not simply go back to the start (nothing but comments in this file) and
$# enter configuration lines one by one until one produces an error.  (Or, of
$# course, do the standard binary chop.)
$#
$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
$# must do Actions/Mark All Targets for Remake.  This is because the compiler
$# generated dependency information (as of OpenWatcom 1.9) does not record the
$# dependency on pnglibconf.h correctly.
$#
$# If awk isn't set then this file is bypassed.  If you just want the standard
$# configuration it is automatically produced from the distributed version
$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
$# of the OpenWatcom library calling convention.)
$#
<<

clean:: .symbolic
 $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
 $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk
 $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
 $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
 $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1

distclean:: clean .symbolic
 $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa
Commit	Line	Data
9c0d9ce3 DS	1	# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
	2	# configuration header. You can ignore this file if you don't need to
	3	# configure libpng; a default configuration will be built.
	4	#
	5	# For more information build libpng.wpj under the IDE and then read the
	6	# generated files:
	7	#
	8	# config.inf: Basic configuration information for a standard build.
	9	# pngconfig.dfa: Advanced configuration for non-standard libpng builds.
	10	#
	11	DELETE=rm -f
	12	ECHO=echo
	13	COPY=copy
	14	#
	15	# If your configuration needs to test compiler flags when building
	16	# pnglibconf.h you may need to override the following on the wmake command
	17	# line:
	18	CFLAGS=
	19	CC=wcl386
	20	CPP=$(CC) -pw0
	21	#
	22	# Read awk from the environment if set, else it can be set on the command
	23	# line (the default approach is to set the %awk% environment variable in the
	24	# IDE libpng.wpj 'before' rule - this setting is local.)
	25	!ifdef %awk
	26	AWK=$(%awk)
	27	!endif
	28	#
	29	# pnglibconf.h must exist in the source directory, this is the final rule
	30	# which copies the local built version (and this is the default target for
	31	# this makefile.)
	32	..\..\pnglibconf.h: pnglibconf.h
	33	$(COPY) pnglibconf.h $@
	34
	35	!ifdef AWK
	36	# CPPFLAGS should contain the options to control the result,
	37	# but DEFS and CFLAGS are also supported here, override
	38	# as appropriate
	39	DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
	40
	41	pnglibconf.h: pnglibconf.dfn
	42	$(DELETE) $@ dfn.c dfn1.out dfn2.out
	43	$(ECHO) $#include "pnglibconf.dfn" >dfn.c
	44	$(CPP) $(DFNFLAGS) dfn.c >dfn1.out
	45	$(AWK) -f << dfn1.out >dfn2.out
	46	/^.PNG_DEFN_MAGIC-.-PNG_DEFN_END.*$$/{
	47	sub(/^.*PNG_DEFN_MAGIC-/, "")
	48	sub(/ -PNG_DEFN_END.$$/, "")
	49	gsub(/ @@@ /, "")
	50	print
	51	}
	52	<<
	53	$(COPY) dfn2.out $@
	54	@type << >pngconfig.inf
	55	This is a locally configurable build of libpng.lib; for configuration
	56	instructions consult and edit projects/openwatcom/pngconfig.dfa
	57	<<
	58	$(DELETE) dfn.c dfn1.out dfn2.out
	59
72281370	60	pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h
9c0d9ce3	61	$(DELETE) $@ dfn1.out dfn2.out
72281370	62	$(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
9c0d9ce3 DS	63	$(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
	64	$(COPY) dfn2.out $@
	65	$(DELETE) dfn1.out dfn2.out
	66
	67	!else
	68	# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
	69	# the required change to the calling convention.
	70	#
	71	# By default libpng is built to use the __cdecl calling convention on
	72	# Windows. This gives compatibility with MSVC and GCC. Unfortunately it
	73	# does not work with OpenWatcom because OpenWatcom implements longjmp using
	74	# the __watcall convention (compared with both MSVC and GCC which use __cdecl
	75	# for library functions.)
	76	#
	77	# Thus the default must be changed to build on OpenWatcom and, once changed,
	78	# the result will not be compatible with applications built using other
	79	# compilers (in fact attempts to build will fail at compile time.)
	80	#
	81	pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
	82	@$(ECHO) .
	83	@$(ECHO) .
	84	@$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
	85	@$(ECHO) .
	86	@$(ECHO) .
	87	vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
	88	@$(ECHO) .
	89	@$(ECHO) .
	90	@$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
	91	@$(ECHO) .
	92	@$(ECHO) .
	93	@type << >pngconfig.inf
	94	This is the default configuration of libpng.lib, if you wish to
	95	change the configuration please consult the instructions in
	96	projects/owatcom/pngconfig.dfa.
	97	<<
	98
	99	!endif
	100
	101	# Make the default files
	102	defaults: .symbolic
	103	@$(COPY) << config.inf
	104	$# The libpng project is incompletely configured. To complete configuration
	105	$# please complete the following steps:
	106	$#
	107	$# 1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
	108	$# locations of the zlib include file zlib.h and the built zlib library,
	109	$# zlib.lib.
	110	$#
	111	$# 2) If you want to change libpng to a non-standard configuration also
	112	$# change the definition of 'awk' in the before rule to the name of your
	113	$# awk command. For more instructions on configuration read
	114	$# pngconfig.dfa.
	115	$#
	116	$# 3) Delete this file (config.inf).
	117	<<
	118	@$(COPY) << pngconfig.dfa
	119	$# pngconfig.dfa: this file contains configuration options for libpng.
	120	$# If emtpy the standard configuration will be built. For this file to be
	121	$# used a working version of the program 'awk' is required and the program
	122	$# must be identified in the 'before' rule of the project.
	123	$#
	124	$# If you don't already have 'awk', or the version of awk you have seems not
	125	$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
	126	$# awk.) You can find source code and a built executable (called awk95.exe)
127	$# here:
128	$#
129	$# http://www.cs.princeton.edu/~bwk/btl.mirror/
130	$#
131	$# The executable works just fine.
132	$#
133	$# If build issues errors after a change to pngconfig.dfa you have entered
134	$# inconsistent feature requests, or even malformed requests, in
135	$# pngconfig.dfa. The error messages from awk should be comprehensible, but
136	$# if not simply go back to the start (nothing but comments in this file) and
137	$# enter configuration lines one by one until one produces an error. (Or, of
138	$# course, do the standard binary chop.)
139	$#
140	$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
141	$# must do Actions/Mark All Targets for Remake. This is because the compiler
142	$# generated dependency information (as of OpenWatcom 1.9) does not record the
143	$# dependency on pnglibconf.h correctly.
144	$#
145	$# If awk isn't set then this file is bypassed. If you just want the standard
146	$# configuration it is automatically produced from the distributed version
147	$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
148	$# of the OpenWatcom library calling convention.)
149	$#
150	<<
151
152	clean:: .symbolic
153	$(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
154	$(DELETE) .obj .mbr .sym .err *.pch libpng.mk
155	$(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
156	$(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
157	$(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1
158
159	distclean:: clean .symbolic
160	$(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa