mirror of
https://git.code.sf.net/p/libpng/code.git
synced 2025-07-10 18:04:09 +02:00
161 lines
6.2 KiB
Makefile
161 lines
6.2 KiB
Makefile
# 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 empty 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:
|
|
$#
|
|
$# https://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 editing 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
|