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Re: Why configure failed to search libws2_32.a in MinGW+MSYS ?

From: Bob Friesenhahn
Subject: Re: Why configure failed to search libws2_32.a in MinGW+MSYS ?
Date: Fri, 27 Dec 2013 17:18:53 -0600 (CST)
User-agent: Alpine 2.01 (GSO 1266 2009-07-14)

On Fri, 27 Dec 2013, Guo Leaveye wrote:
checking dependency style of gcc... gcc3
checking for WSAGetLastError in -lws2_32... no
checking for WSAGetLastError in -llibws2_32... no
configure: creating ./config.status
config.status: creating Makefile
config.status: executing depfiles commands

Note that, (1) both library libws2_32.a check report `no', and (2) the compiler 
is exactly my simulation target `gcc'.

I know that I can add a check into to examine whether building in 
mingw or cygwin, but is this checking supposed to be fully examination for the 
real build environment ? If it works fine, LIB variable should be full filled 
with all required library link options. If there a simple way by adjust my 
MSYS+MinGW environment to make autoconf works, please tell me.

Look in the generated config.log for the errors produced while testing for WSAGetLastError. The errors may provide a clue as to what has actually gone wrong and lead to fixing the problem. Autoconf tests for library functions by linking a small test program. Sometimes it is necessary to supply additional libraries in order to successfully link with a library.

Bob Friesenhahn
GraphicsMagick Maintainer,

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