Hi John, Curious, this code has been in the OSG code for many many years and no one had tripped over it till now... In this case the extern in errno; line doesn't look like it's required at all. I've removed it and things still compare. I note from you follow up email this work for you too. I can only presume the line was due to a copy and paste from Sproc implementation that does use errno.
This fix is now checked into the OSG-2.8 and svn/trunk. Robert. On Fri, May 15, 2009 at 12:38 PM, John Ivar Haugland <[email protected]> wrote: > I have to install OpenSceneGraph on a RHEL 3.2 system. I used cmake 2.6.3 > to setup the make system and started to compile. I got the error given > below. What can be done to fix this? > > [ 0%] Building CXX object > src/OpenThreads/pthreads/CMakeFiles/OpenThreads.dir/PThread.o > /private/jiha/shivr/JIHA/OSG/OpenSceneGraph-2.8.1-rc4/src/OpenThreads/pthreads/PThread.c++:53: > declaration > of `int* __errno_location()' throws different exceptions > /usr/include/bits/errno.h:38: than previous declaration `int* > __errno_location() throw ()' > make[2]: *** [src/OpenThreads/pthreads/CMakeFiles/OpenThreads.dir/PThread.o] > Error 1 > make[1]: *** [src/OpenThreads/pthreads/CMakeFiles/OpenThreads.dir/all] Error > 2 > make: *** [all] Error 2 > > *********************** > The /usr/include/bits/errno.h file is given below with line 38 highlighted. > > /* Error constants. Linux specific version. > Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. > This file is part of the GNU C Library. > > The GNU C Library is free software; you can redistribute it and/or > modify it under the terms of the GNU Lesser General Public > License as published by the Free Software Foundation; either > version 2.1 of the License, or (at your option) any later version. > > The GNU C Library is distributed in the hope that it will be useful, > but WITHOUT ANY WARRANTY; without even the implied warranty of > MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > Lesser General Public License for more details. > > You should have received a copy of the GNU Lesser General Public > License along with the GNU C Library; if not, write to the Free > Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA > 02111-1307 USA. */ > > #ifdef _ERRNO_H > > # undef EDOM > # undef EILSEQ > # undef ERANGE > # include <linux/errno.h> > > /* Linux has no ENOTSUP error code. */ > # define ENOTSUP EOPNOTSUPP > > /* Linux also had no ECANCELED error code. Since it is not used here > we define it to an invalid value. */ > # ifndef ECANCELED > # define ECANCELED 125 > # endif > > # ifndef __ASSEMBLER__ > /* Function to get address of global `errno' variable. */ > extern int *__errno_location (void) __THROW __attribute__ ((__const__)); > > # if !defined _LIBC || defined _LIBC_REENTRANT > /* When using threads, errno is a per-thread value. */ > # define errno (*__errno_location ()) > # endif > # endif /* !__ASSEMBLER__ */ > #endif /* _ERRNO_H */ > > #if !defined _ERRNO_H && defined __need_Emath > /* This is ugly but the kernel header is not clean enough. We must > define only the values EDOM, EILSEQ and ERANGE in case __need_Emath is > defined. */ > # define EDOM 33 /* Math argument out of domain of function. */ > # define EILSEQ 84 /* Illegal byte sequence. */ > # define ERANGE 34 /* Math result not representable. */ > #endif /* !_ERRNO_H && __need_Emath */ > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
