libpng dependency issue

Luca Bennati lucak3 at gmail.com
Wed Feb 3 04:21:12 CST 2010


2010/2/3 Vincent Povirk
<madewokherd+8cd9 at gmail.com<madewokherd%2B8cd9 at gmail.com>
>

> We use png_set_gray_1_2_4_to_8 to expand grayscale PNG's to an RGB format.
>
> It'd be nice to have libpng do this (if there's a non-deprecated way
> to do it), but it's a trivial operation that we could do without if
> necessary.
>

The error is:
ccache gcc -c -I. -I. -I../../include -I../../include  -D__WINESRC__
-D_REENTRANT -fPIC -Wall -pipe -fno-strict-aliasing
-Wdeclaration-after-statement -Wstrict-prototypes -Wtype-limits
-Wwrite-strings -Wpointer-arith  -g -O2  -o pngformat.o pngformat.c
pngformat.c:62: error: ‘png_set_gray_1_2_4_to_8’ undeclared here (not in a
function)
pngformat.c:62: warning: type defaults to ‘int’ in declaration of
‘ppng_set_gray_1_2_4_to_8’
pngformat.c: In function ‘PngDecoder_Initialize’:
pngformat.c:285: error: called object ‘ppng_set_gray_1_2_4_to_8’ is not a
function

The distro i'm using is ArchLinux i686, that just shipped the new libraries
with massive rebuilds.
I already resolved the problem, as the only thing to do was search all
"png_set_gray_1_2_4_to_8" and change them to
"png_set_expand_gray_1_2_4_to_8"
i already wrote a patch for this that make compilation works again, but now
as appeared another problem:
LD_LIBRARY_PATH="../../libs/wine:$LD_LIBRARY_PATH" ../../tools/wrc/wrc
--nostdinc -I. -I. -I../../include -I../../include  -D__WINESRC__
-foversion.res version.rc
../../tools/winegcc/winegcc  -B../../tools/winebuild --sysroot=../.. -shared
./windowscodecs.spec bmpdecode.o bmpencode.o clsfactory.o converter.o
gifformat.o icoformat.o imgfactory.o info.o jpegformat.o main.o palette.o
pngformat.o propertybag.o regsvr.o stream.o ungif.o    version.res    -o
windowscodecs.dll.so  -luuid -lole32 -ladvapi32 -lkernel32
../../libs/port/libwine_port.a
pngformat.o: In function `PngFrameEncode_Commit':
/home/luca/wine-git/dlls/windowscodecs/pngformat.c:987: undefined reference
to `png_set_longjmp_fn'
pngformat.o: In function `PngEncoder_Initialize':
/home/luca/wine-git/dlls/windowscodecs/pngformat.c:1119: undefined reference
to `png_set_longjmp_fn'
pngformat.o: In function `PngFrameEncode_WritePixels':
/home/luca/wine-git/dlls/windowscodecs/pngformat.c:861: undefined reference
to `png_set_longjmp_fn'
pngformat.o: In function `PngDecoder_Initialize':
/home/luca/wine-git/dlls/windowscodecs/pngformat.c:252: undefined reference
to `png_set_longjmp_fn'
collect2: ld returned 1 exit status

I will now investigate this new one

BTW i confirmed that the libjpeg 7 -> 8 bump doesn't bring problem :)
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