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To: cygwin AT cygwin DOT com
From: =?ISO-8859-15?Q?Ren=E9_Berber?= <r DOT berber AT computer DOT org>
Subject: Re: perl 5.14 ncursesw: calling getbegyx() crashes
Date: Mon, 08 Apr 2013 15:49:44 -0500
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Message-ID: <kjvah6$1tj$1@ger.gmane.org>
References: <51617A39 DOT 9000901 AT schueler DOT homeip DOT net> <516186D7 DOT 20201 AT cornell DOT edu> <51630B3F DOT 2050003 AT schueler DOT homeip DOT net>
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In-Reply-To: <51630B3F.2050003@schueler.homeip.net>

On 4/8/2013 1:23 PM, "D. Schüler" wrote:

[snip]
> ~/Curses-1.28 $ gcc-4 -I/usr/include/ncursesw -L/usr/lib/ncursesw
> -lncursesw -DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__ -g
> -fno-strict-aliasing -pipe -fstack-protector -DUSEIMPORTLIB -o testsym
> testsym.c
> /tmp/ccp3WxB0.o: In function `main':
> /home/axnrl/Curses-1.28/testsym.c:5: undefined reference to `_initscr'
> /home/axnrl/Curses-1.28/testsym.c:6: undefined reference to `_ncwrap_stdscr'
> /home/axnrl/Curses-1.28/testsym.c:6: undefined reference to `_getcury'
> /home/axnrl/Curses-1.28/testsym.c:6: undefined reference to `_ncwrap_stdscr'
> /home/axnrl/Curses-1.28/testsym.c:6: undefined reference to `_getcurx'
> collect2: ld returned 1 exit status
>
> This looks like a linker error, which could not find the symbols for the
> functions.

No, its the way the linker works in Windows: the order of the operands 
affects the product, i.e. put the library at the end and it works, put 
depending libraries in order (the linker does a one-pass, so required 
symbols have to appear before the library that has them).
-- 
René Berber


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