Re: Problem building with 2.6 kernel headers

[Dan Kegel <dank at kegel dot com>]

Dan Kegel wrote:
> Mike Frysinger wrote:
>
> > On Thursday 24 March 2005 02:07 am, Dan Kegel wrote:
> >
> > > gcc-3.4.x requires glibc headers to be installed
> >
> >
> >
> > how so ? 
>
>
> Look at the configure script.  It has an explicit check.
>
> > ive built a stage1 gcc C-only with gcc-3.4.3 for a ton of targets and 
> > ia64/powerpc64 were the only ones that failed badly (unwind junk) ... 
> > i just had to disable a lot of things for this first pass compiler 
> > (static, threads, etc...)
>
>
> Were you using vanilla sources, or were you using
> somebody else's packaging that solved the problem for you?

Or perhaps were you building for a non-Linux target?
The explicit check is in sysdeps/unix/sysv/linux/configure.in:

...
define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl
AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl
AC_EGREP_CPP([eat flaming death], [#include <linux/version.h>
#if !defined LINUX_VERSION_CODE || LINUX_VERSION_CODE < ]dnl
patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
[ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
eat flaming death
#endif],
             libc_cv_linuxVER='TOO OLD!',
             libc_cv_linuxVER='LIBC_LINUX_VERSION or later')])
if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then
  AC_MSG_ERROR([GNU libc requires kernel header files from
Linux LIBC_LINUX_VERSION or later to be installed before configuring.
The kernel header files are found usually in /usr/include/asm and
/usr/include/linux; make sure these directories use files from
Linux LIBC_LINUX_VERSION or later.  This check uses <linux/version.h>, so
make sure that file was built correctly when installing the kernel header
files.  To use kernel headers not from /usr/include/linux, use the
configure option --with-headers.])
fi

...

I suppose I could set libc_cv_linuxVER=2.6.11.3 when running that configure;
it would bypass the check, anyway...
- Dan


--
Trying to get a job as a c++ developer?  See http://kegel.com/academy/getting-hired.html

------
Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com