Query of type of memcpy (and sys_errlist) on Cygwin

Tatsuro MATSUOKA tmacchant2@yahoo.co.jp
Mon Apr 11 08:13:00 GMT 2016


> From: Csaba Raduly 
> To: Tatsuro MATSUOKA ; cygwin list 
> Cc: Marco Atzeri ; Hans-Bernhard Bröker 
> Date: 2016/4/11, Mon 16:52
> Subject: Re: Query of type of memcpy (and sys_errlist) on Cygwin
> 
> Hi,
> 
> On Mon, Apr 11, 2016 at 1:20 AM, Tatsuro MATSUOKA  wrote:
> 
>>  The zipped config.log is placed here:
>>  http://www.geocities.jp/tmacchant2/config.log.20160411.zip
>>  The previous reply to Hans I made a mistake to extract the memcpy related 
> part.
>>  I apologize for that.
>>  configure:9591: result: no
>>  configure:9591: checking for memcpy
>>  configure:9591: gcc -o conftest.exe -g -O2  -I/usr/local/include  
> -L/usr/local/lib -lcerf conftest.c  >&5
>>  conftest.c:86:6: warning: conflicting types for built-in function 
> 'memcpy'
>>   char memcpy ();
>> 
> 
> You forgot to copy the important line from config.log:
> 
> /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/../../../../x86_64-pc-cygwin/bin/ld:
> cannot find -lcerf
> 
> Why on earth does a test for memcpy try to link to libcerf?
> 
> Csaba
Ah!
I configured with 
LIBCERF_CFLAGS='-I/usr/local/include' \
LIBCERF_LIBS='-L/usr/local/lib -lcerf' \
../gnuplot/configure --prefix=/opt/gp510 --without-qt --with-caca --with-readline=builtin

I do not why configure add -lcerf.
Without
LIBCERF_CFLAGS='-I/usr/local/include' \
LIBCERF_LIBS='-L/usr/local/lib -lcerf' \

memcpy and other functions are correctly recognized 
and make was went well.
But libcerf was not recognised.
This is gnuplot issue but not the Cygwin.
I will be back gnuplot ML and leave from the Cygwin list on this matter.
Thanks!
Tatsuro


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