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36a16fd761
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.
93 lines
3.2 KiB
Plaintext
93 lines
3.2 KiB
Plaintext
# makefile for libpng using emscripten
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# Copyright (C) 2000, 2014, 2019-2025 Cosmin Truta
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# Copyright (C) 2021 Kirk Roerig
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# Copyright (C) 2008, 2014 Glenn Randers-Pehrson
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# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
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#
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# This code is released under the libpng license.
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# For conditions of distribution and use, see the disclaimer
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# and license in png.h
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# Location of the zlib library and include files
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ZLIBINC = ../zlib
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ZLIBLIB = ../zlib
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# Compiler, linker, lib and other tools
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CC = emcc
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LD = $(CC)
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AR = emar
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RANLIB = emranlib
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CP = cp
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RM_F = rm -f
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STDC = -pedantic-errors # -std=c99
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WARN = -Wall -Wextra -Wundef
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WARNMORE = -Wcast-align -Wconversion -Wshadow -Wpointer-arith -Wwrite-strings \
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-Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes
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LOCAL_CPPFLAGS =
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CPPFLAGS = -I$(ZLIBINC) # -DPNG_DEBUG=5
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ALL_CPPFLAGS = $(LOCAL_CPPFLAGS) $(CPPFLAGS)
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LOCAL_CFLAGS = $(STDC) $(WARN) # $(WARNMORE)
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CFLAGS = -O2
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ALL_CFLAGS = $(LOCAL_CFLAGS) $(CFLAGS)
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ARFLAGS = rc
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LDFLAGS = -L$(ZLIBLIB)
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PNGTEST_LDFLAGS = --preload-file=pngtest.png
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LIBS = -lz -lm
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# Pre-built configuration
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# See scripts/pnglibconf.mak for more options
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PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
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# File lists
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OBJS = png.o pngerror.o pngget.o pngmem.o pngpread.o \
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pngread.o pngrio.o pngrtran.o pngrutil.o pngset.o \
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pngtrans.o pngwio.o pngwrite.o pngwtran.o pngwutil.o
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# Targets
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all: static
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pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
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$(CP) $(PNGLIBCONF_H_PREBUILT) $@
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.c.o:
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$(CC) -c $(ALL_CPPFLAGS) $(ALL_CFLAGS) -o $@ $*.c
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static: libpng.a pngtest
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shared:
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@echo This makefile cannot create shared libraries.
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@false
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libpng.a: $(OBJS)
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$(AR) $(ARFLAGS) $@ $(OBJS)
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$(RANLIB) $@
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test: pngtest
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node ./pngtest
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pngtest: pngtest.o libpng.a
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$(LD) $(LDFLAGS) $(PNGTEST_LDFLAGS) -o $@ pngtest.o libpng.a $(LIBS)
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clean:
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$(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
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$(RM_F) pngtest.data pngtest.wasm
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png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
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pngtest.o: png.h pngconf.h pnglibconf.h
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