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Date: Thu, 26 Jul 2012 20:26:34 -0700
From: Daniel Colascione <dancol AT dancol DOT org>
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To: cygwin AT cygwin DOT com
Subject: Re: <regex> doesn't work with g++
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On 7/26/2012 8:03 PM, Yaakov (Cygwin/X) wrote:
> On 2012-07-26 16:46, Daniel Colascione wrote:
>> $ g++ -std=3Dgnu++0x foo.cpp
>> /tmp/ccS3vCW7.o:foo.cpp:(.text$_ZNSt11basic_regexIcSt12regex_traitsIcEEC=
1EPKcj[std::basic_regex<char,
>>
>> std::regex_traits<char> >::basic_regex(char const*, unsigned
>> int)]+0x60): undefined reference to `std::basic_regex<char,
>> std::regex_traits<char> >::_M_compile()'
>> collect2: ld returned 1 exit status
>=20
> GCC 4.5 does not have full support for C++0x.  We'll need an upgrade to
> 4.7 for this to work.

That's surprising. The regex header was in TR1, from back in 2005. I'd
have expected gcc to support it a long time ago. I'm also surprised to
see that the header definition present and the libstdc++ implementation
absent. That's what made me think there was something wrong with the
toolchain.

Thanks.


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