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Re: POSIX features disappear with g++
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: tim at timsplace dot dk
- Cc: gcc-help at gcc dot gnu dot org
- Date: 02 Dec 2001 14:29:27 -0200
- Subject: Re: POSIX features disappear with g++
- Organization: GCC Team, Red Hat
- References: <Pine.LNX.4.21.0110150948560.799-100000@sandy.adsl.dk>
On Oct 15, 2001, tim@timsplace.dk wrote:
> Running g++ (g++ -lrt test.c)
> test.c: In function `int main(int, char **)':
> test.c:23: implicit declaration of function `int ftruncate(...)'
Every function called in a C++ program must have been previously
declared. It seems that you're not including the header file that
declares (!= defines) ftruncate(), or there's no header file that
declares it, in which case you'd have to figure out the appropriate
signature of the function and declare it yourself.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
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