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Date: Wed, 12 Dec 2001 23:13:57 +0300
From: egor duda <deo AT logos-m DOT ru>
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Reply-To: egor duda <cygwin AT cygwin DOT com>
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Message-ID: <33561504220.20011212231357@logos-m.ru>
To: Teun Burgers <a DOT rburgers AT freeler DOT nl>
CC: cygwin AT cygwin DOT com
Subject: Re: gcc -mno-cygwin creates cygwin executables!
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References: <3C17011D AT freeler-webmail-01>
 <04ea01c18303$55406a70$0200a8c0 AT lifelesswks> <3C17B526 DOT 60915DD9 AT freeler DOT nl>
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Hi!

Wednesday, 12 December, 2001 Teun Burgers a DOT rburgers AT freeler DOT nl wrote:

TB> To sum up this thread:
TB> consider the following program:

TB> main () {
TB>         pthread_create();
TB> }

TB> gcc -mno-cygwin -o zz.exe zz.c -lpthread will compile and build.
TB> A cygcheck on zz.exe reveals that libcygwin.a is linked in. The
TB> problem with this is that a configure script with CC='gcc -mno-cygwin'
TB> will incorrectly find that libpthread.a is available with
TB> AC_SEARCH_LIBS(pthread_create, -lpthread)

TB> This comes about since gcc -mno-cygwin searches for libs in /usr/lib
TB> and libpthread.a is a symlink to libcygwin.a

you're fixing specific symptoms instead of the problem itself. this
had been discussed already and the general consensus (at least as i
understand it) is the following: -mno-cygwin is a _hack_. it's
supposed to be used only when absolutely necessary and when you
absolutely know what you're doing.

*** if you want to build executables for mingw platform you should use
mingw toolchain, either native or cross. ***

you don't suppose cygwin gcc to have -msolaris or -mdjgpp options, do
you? i believe mingw is no different.

the reason -mno-cygwin still exists in official cygwin gcc is that
cygwin contains several utilities that should not depend on
cygwin1.dll (setup, cygcheck, strace). those utilities are built with
-mno-cygwin and people maintaining them take special care to make sure
libcygwin.a won't creep in.

Egor.            mailto:deo AT logos-m DOT ru ICQ 5165414 FidoNet 2:5020/496.19


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