Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sources DOT redhat DOT com Delivered-To: mailing list cygwin AT sources DOT redhat DOT com From: "Jonadab the Unsightly One" Organization: There is no organisation. To: cygwin AT cygwin DOT com Date: Thu, 5 Apr 2001 09:16:59 -0400 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: libpng Reply-to: jonadab AT bright DOT net Message-ID: <3ACC380B.17460.433A2EC@localhost> X-Eric-Conspiracy: My name is not Eric. X-Platform: Windows '95 OSR2 (heavily adjusted and customised) X-mailer: Pegasus Mail for Win32 (v3.12) 'ello. To get some practice compiling stuff and getting it to work in cygwin, I downloaded the Persistence of Vision source so I can start with that. It includes zlib (which seems to have built with no problems) and libpng (which seems more complicated). There are a number of makefiles, but only three of them use gcc. Of those three, one is for a certain version of Solaris; another is for Linux, and the third for OS/2. I figured cygwin is closer to Linux than either of those others (yes? no? Is that still not close enough?) and chose that one, but partway through I get the following: cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) cc1.exe: warning: -fPIC ignored for target (all code is position independent) Cannot export _bss_end__: symbol not defined Cannot export _bss_start__: symbol not defined Cannot export _data_end__: symbol not defined Cannot export _data_start__: symbol not defined collect2: ld returned 1 exit status make: *** [libpng.so.2.1.0.3] Error 1 For context, I think the last couple of things that happened before that are as follows: gcc -c -I../zlib -Wall -O3 -funroll-loops -fPIC -o pngpread.pic.o pngpread.c gcc -shared -Wl,-soname,libpng.so.2 -o libpng.so.2.1.0.3 \ png.pic.o pngset.pic.o pngget.pic.o pngrutil.pic.o pngtrans.pic.o pngwutil.pic. o pngread.pic.o pngrio.pic.o pngwio.pic.o pngwrite.pic.o pngrtran.pic.o pngwtran .pic.o pngmem.pic.o pngerror.pic.o pngpread.pic.o -L../zlib -lz -lm -lc Does anyone have a makefile that works for libpng under cygwin, or any advice for how to create one (bearing in mind that my experience with make is less than my experience with cygwin)? I have gcc version 2.95.2-5 -- jonadab -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple