kc3-lang/libpng/scripts/makefile.emcc

Branch - branch -libpng16libpng17

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• Hash : 36a16fd7
  Author :
  Date : 2025-01-21T18:42:49
  

  build: Add scripts/makefile.c89; update other makefiles
  
  Add scripts/makefile.c89 and refactor scripts/makefile.emcc,
  scripts/makefile.clang and scripts/makefile.gcc
  
  Refactor variable definitions inside scripts/makefile.clang,
  scripts/makefile.gcc and scripts/makefile.emcc, and start using
  the option `-pedantic-errors` unconditionally. This option was
  first implemented in GCC version 3.1, and it was available in
  Clang and in other Clang-based compilers (e.g. Emscripten) from
  the beginning.
  
  Add scripts/makefile.c89, derived from the above makefiles, but
  with `-pedantic-errors -std=c89`. We aren't enabling the C89 level
  by default, to avoid any incompatibility, whether intentional or
  accidental, with the compiler's default language level. However,
  we are still continuing to support C89 in the 'libpng16' branch,
  and this special makefile can be used for testing purposes.
  

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• scripts/makefile.emcc

• # makefile for libpng using emscripten
  # Copyright (C) 2000, 2014, 2019-2025 Cosmin Truta
  # Copyright (C) 2021 Kirk Roerig
  # Copyright (C) 2008, 2014 Glenn Randers-Pehrson
  # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
  #
  # This code is released under the libpng license.
  # For conditions of distribution and use, see the disclaimer
  # and license in png.h
  
  # Location of the zlib library and include files
  ZLIBINC = ../zlib
  ZLIBLIB = ../zlib
  
  # Compiler, linker, lib and other tools
  CC = emcc
  LD = $(CC)
  AR = emar
  RANLIB = emranlib
  CP = cp
  RM_F = rm -f
  
  STDC = -pedantic-errors # -std=c99
  WARN = -Wall -Wextra -Wundef
  WARNMORE = -Wcast-align -Wconversion -Wshadow -Wpointer-arith -Wwrite-strings \
             -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes
  LOCAL_CPPFLAGS =
  CPPFLAGS = -I$(ZLIBINC) # -DPNG_DEBUG=5
  ALL_CPPFLAGS = $(LOCAL_CPPFLAGS) $(CPPFLAGS)
  LOCAL_CFLAGS = $(STDC) $(WARN) # $(WARNMORE)
  CFLAGS = -O2
  ALL_CFLAGS = $(LOCAL_CFLAGS) $(CFLAGS)
  ARFLAGS = rc
  LDFLAGS = -L$(ZLIBLIB)
  PNGTEST_LDFLAGS = --preload-file=pngtest.png
  LIBS = -lz -lm
  
  # Pre-built configuration
  # See scripts/pnglibconf.mak for more options
  PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
  
  # File lists
  OBJS = png.o pngerror.o pngget.o pngmem.o pngpread.o \
         pngread.o pngrio.o pngrtran.o pngrutil.o pngset.o \
         pngtrans.o pngwio.o pngwrite.o pngwtran.o pngwutil.o
  
  # Targets
  all: static
  
  pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
  	$(CP) $(PNGLIBCONF_H_PREBUILT) $@
  
  .c.o:
  	$(CC) -c $(ALL_CPPFLAGS) $(ALL_CFLAGS) -o $@ $*.c
  
  static: libpng.a pngtest
  
  shared:
  	@echo This makefile cannot create shared libraries.
  	@false
  
  libpng.a: $(OBJS)
  	$(AR) $(ARFLAGS) $@ $(OBJS)
  	$(RANLIB) $@
  
  test: pngtest
  	node ./pngtest
  
  pngtest: pngtest.o libpng.a
  	$(LD) $(LDFLAGS) $(PNGTEST_LDFLAGS) -o $@ pngtest.o libpng.a $(LIBS)
  
  clean:
  	$(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
  	$(RM_F) pngtest.data pngtest.wasm
  
  png.o:      png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngget.o:   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngmem.o:   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngread.o:  png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngrio.o:   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngset.o:   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngwio.o:   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
  
  pngtest.o:  png.h pngconf.h pnglibconf.h
  

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