From:	rdnews AT dahlsys DOT com (Roger Dahl)
Newsgroups:	comp.os.msdos.djgpp
Subject:	DJGPP and the Boost library?
Date:	9 Jan 2003 12:49:57 -0800
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To:	djgpp AT delorie DOT com
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Hello,

Has anyone had any luck using the Boost library with DJGPP?

I'm trying to use the Regex++ part of the Boost library. The library
compiles without any problems, but I get linker errors when I try to
use it. Here's my test app:

#include <boost/regex.hpp>

int main() {
	boost::regex r("test");
	return 0;
}

When I try to link with the library, I get the following errors:

>gpp.exe -O2 -Wall -L/djgpp/boost_1_29_0/libs/regex/build/gcc
-lboost_regex -I/djgpp/boost_1_29_0 -o mapper.exe mapper.cpp

d:/tmp/cc8e650b.o(.text+0x2d):mapper.cpp: undefined reference to
`boost::reg_expression<char, boost::regex_traits<char>,
std::allocator<char> >::reg_expression[in-charge](char const*,
unsigned, std::allocator<char> const&)'

d:/tmp/cc8e650b.o(.text+0x35):mapper.cpp: undefined reference to
`boost::reg_expression<char, boost::regex_traits<char>,
std::allocator<char> >::~reg_expression [in-charge]()'

Listing the symbols in my test app with nm, I can find undefined
symbols like this one:
 
U boost::reg_expression<char,
boost::regex_traits<char>,std::allocator<char> >::~reg_expression()
 
Listing the symbols in the library, I can find the same symbols again,
but defined:
 
T boost::reg_expression<char,
boost::regex_traits<char>,std::allocator<char> >::~reg_expression()

Thanks for any help and suggestions.

Roger Dahl

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