[sane-devel] Compile problem in 1.0.11

[John Coppens]

On Thu, 10 Apr 2003 10:51:34 +0200
Henning Meier-Geinitz <henning at meier-geinitz.de> wrote:

> Hi,
> 
> On Thu, Apr 10, 2003 at 12:46:27AM -0300, John Coppens wrote:
> > Get this error on compiling sane-backends 1.0.11:
> 
> Please provide more details. This is which Linux version? Which
> version of glibc? Which distribution? Which gcc?
> 
> I haven't seen any bug reports about this ever. The include hasn't
> changed since ... well ... since the beginning of the time :-)
> 
> > gcc -c -g -O2 -W -Wall -DHAVE_CONFIG_H -I. -I. -I../include
> > -I../include-DPATH_SANE_CONFIG_DIR=/usr/local/etc/sane.d
> > -DPATH_SANE_DATA_DIR=/usr/local/share -DV_MAJOR=1 -DV_MINOR=0
> > -DBACKEND_NAME=v4l -DLIBDIR=/usr/local/lib/sane v4l.c  -fPIC -DPIC -o
> > v4l.lo
> > In file included from /usr/include/linux/videodev2.h:16,
> >                  from /usr/include/linux/videodev.h:14,
> >                  from v4l.c:76:
> > /usr/include/linux/time.h:9: redefinition of `struct timespec'
> > /usr/include/linux/time.h:88: redefinition of `struct timeval'
> > /usr/include/linux/time.h:93: redefinition of `struct timezone'
> > /usr/include/linux/time.h:124: redefinition of `struct itimerval'
> > 
> > In v4l.c, line 67, I changed:
> > 
> > #include <sys/time.h>
> > to
> > #include <linux/time.h>
> 
> That doesn't look right. We shouldn't include the low-level headers if
> th at's not absolutely necessary. However, I think we don't need
> sys/time.h anyway. At least for me it compiles without that include.

Hello Henning.

First off, the last item: /usr/include/linux _is_ a link to the kernel
includes. How do I change that? Where do I get the right include files?

About the above includes: I've been looking around in the source files,
and found quite a few references to sys/ and linux/ include files. One of
the reasons I finally put the message on the list is that I got completely
lost in all the duplicate/repeated includes.

gcc 3.2.2
kernel is 2.4.20
distro is Slackware 8.1 - with many updates
glibc 2.3.1

John