X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Message-ID: <48114B31.9060906@cwilson.fastmail.fm> Date: Thu, 24 Apr 2008 23:08:33 -0400 From: cygwin@cwilson.fastmail.fm User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.8.1.12) Gecko/20080213 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: [ANNOUNCEMENT] NEW: libtool-2.2.2-2 / Updated: libltdl7-2.2.2-2 References: <480445AC.7000005@users.sourceforge.net> <48044C3C.5060504@cwilson.fastmail.fm> <480FB2BA.208@users.sourceforge.net> <48100654.1050609@cwilson.fastmail.fm> In-Reply-To: <48100654.1050609@cwilson.fastmail.fm> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Charles Wilson wrote: > Yaakov (Cygwin Ports) wrote: >> ./.libs/lt-foo.c:263: warning: string length `4368' is greater than the >> length `4095' ISO C99 compilers are required to support This one can be fixed by splitting the string into two pieces. I'm working on a patch for that. >> ./.libs/lt-foo.c: In function `main': >> ./.libs/lt-foo.c:288: warning: implicit declaration of function >> `_setmode' This one is already fixed in current git. >> ./.libs/lt-foo.c: In function `chase_symlinks': >> ./.libs/lt-foo.c:577: warning: implicit declaration of function >> `realpath' >> ./.libs/lt-foo.c:577: warning: assignment makes pointer from integer >> without a cast These two are the same issue... (1) realpath() is invoked in a section of code that is #ifdef __CYGWIN__ (2) the wrapper source code unconditionally #includes stdlib.h (3) cygwin's stdlib.h declares realpath. ...but it does so inside a #ifndef __STRICT_ANSI__ block. And -std=c99 turns on __STRICT_ANSI__, while -std=gnu99 does not. Posix says that realpath() will be declared if #include Ansi says nothing about realpath(), so STRICT_ANSI requires that realpath is NOT declared when #include I guess the cwrapper should add a section like this, for __CYGWIN__ #if defined __CYGWIN__ # if defined __STRICT_ANSI__ char *realpath (const char *, char *); # endif #endif NOTE: usually you *want* the cwrapper to be compiled with the same CFLAGS that your target application needs. OTOH, if you explicitly set your compatibility flags (-c99, _POSIX_C_SOURCE=200112L, -ansi, etc) "too low" it is possible something's going to break. Or some pathological project could put '-Dprintf=exit' into CFLAGS. You can't guard against everything. But we ought to be compatible with c99. -- Chuck -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/