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undefined reference to `png_write_destroy' when linking with libpng-1.0.8-1.tar.gz from Charles Wilson
- To: Cygnus <cygwin at sources dot redhat dot com>
- Subject: undefined reference to `png_write_destroy' when linking with libpng-1.0.8-1.tar.gz from Charles Wilson
- From: "Dr. Volker Zell" <Dr dot Volker dot Zell at oracle dot com>
- Date: 14 Sep 2000 13:01:03 +0200
Hi
System: WinNT 4.0/SP3 - 196 MB Ram
Cygwin 1.1.4
- everything mounted binary,
- CYGWIN = tty title binmode ntea nontsec
plus all the contrib libraries from Charles Wilson.
I get the following when compiling
o netpbm-9.8 - http://download.sourceforge.net/netpbm/
gcc -c -I.. -I../ppm -I../pgm -I../pbm -I../shhopt -I/usr/include -I/usr/include -I/usr/include -I../urt -pedantic -O3 -Wall -Wno-uninitialized -o pnmtopng.o pnmtopng.c
gcc -o pnmtopng pnmtopng.o `../libopt libpnm.a ../ppm/libppm.a ../pgm/libpgm.a ../pbm/libpbm.a ` \
-L/usr/lib -lpng -lz -lm
pnmtopng.o(.text+0x39ce):pnmtopng.c: undefined reference to `png_write_destroy'
collect2: ld returned 1 exit status
make[1]: *** [pnmtopng] Error 1
and also the following errors when compiling
o gimp-1.0.4 - ftp://ftp.gimp.org/pub/gimp/v1.0/v1.0.4/
/bin/sh ../../libtool --mode=link gcc -g -O2 -Wall -s -o png png.o ../../libgimp/libgimpui.la ../../libgimp/libgimp.la -L/usr/local/lib -L/usr/X11R6/lib -lgtk -lgdk -lgmodule -lglib -lXext -lX11 -lm -lipc -lpng -lz -lm
gcc -g -O2 -Wall -s -o png png.o ../../libgimp/.libs/libgimpui.a ../../libgimp/.libs/libgimp.a -L/usr/local/lib -L/usr/X11R6/lib -lgtk -lgdk -lgmodule -lglib -lXext -lX11 -lm -lipc -lpng -lz -lm
png.o: In function `load_image':
/gnu/src/gimp-1.0.4/plug-ins/png/png.c:601: undefined reference to `png_read_destroy'
png.o: In function `save_image':
/gnu/src/gimp-1.0.4/plug-ins/png/png.c:794: undefined reference to `png_write_destroy'
collect2: ld returned 1 exit status
Both symbols are defined in the static libpng.a library but not in the libpng.dll.a.
Any hints why ?
Ciao
Volker
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