Hi, On Wed, Jul 10, 2002 at 04:09:52AM -0700, David Paschal wrote: > Hi. Could somebody please review the following algorithm for detecting > where sane-backends lib and etc directories are installed and let me know > if there are any problems with it?
I haven't looked at the actual code but the summary looks fine for me. A bit paranoic, maybe :-) > This is for installing the external > "hpoj" backend (http://hpoj.sourceforge.net), by setting a symlink from > .../lib/sane/libsane-hpoj.so.1 to where libsane-hpoj.so* is really > installed, and appending the line "hpoj" to dll.conf if necessary. Be careful with the naming scheme. I don't know, if libsane-hpoj.so.1 (especially the .1) works on every non-Linux platform. > The actual configure.in code I wrote is included at the end of this > message, but I'll summarize it here: > > - Look for the file libsane-dll.so in the following places: > - the directory specified by "./configure --with-sane-backend=<DIR>" > - parsed "-L' switch from `sane-config --ldflags' with "/sane" appended > - `sane-config --exec-prefix`/lib/sane > - `sane-config --prefix`/lib/sane > - /usr/local/lib/sane > - /usr/lib/sane > - /usr/X11*/lib/sane You could also parse LD_LIBRARY_PATH. > - Look for the file dll.conf in the following places: > - the directory specified by "./configure --with-sane-etc=<DIR>" > - the environment variable $SANE_CONFIG_DIR > - `sane-config --prefix`/etc/sane.d > - `sane-config --exec-prefix`/etc/sane.d As far as I know, if --sysconfdir isn't set explicitely, it's ${prefix}/etc/sane.d/ . I guess it's quite unlikely that anyone uses exec-prefix for configuration files. But you never know... > - /etc/sane.d > - /usr/local/etc/sane.d > - /usr/etc/sane.d I haven't seen the last one. > For example, is anybody aware of any other paths where distributions > might install the .so and .conf files? I have seen SANE installed in /opt/sane/lib, /opt/sane/etc/ ..., but that was by a local administrator. Bye, Henning
