[fuse-devel] FUSE_VERSION checking problem

[Harshavardhana <ha...@zr...>]

Hi Miklos,

   I was trying to check for FUSE_VERSION information from fuse.h using
   something like following in our configure.ac file which is giving some
   problems

   AC_TRY_COMPILE([#define _FILE_OFFSET_BITS
                   #include <fuse.h>],
                   #if (FUSE_VERSION < 27)
                   #error "Old version"
                   #endif
                   ,
                   [HAVE_FUSE_VERSION="yes"],
                   [HAVE_FUSE_VERSION="no"])


   Now this is throwing out error as "Old version" inside config.log during
   the ./configure is being run, observing this i saw FUSE_VERSION is
   actually set to 21. Even if i have installed the 2.7.0 version on my
   machine. This is notably because of the fact that we didn't set
   FUSE_USE_VERSION during compile. But i am sure that this should not be
   the case. I should be able to get the actual version installed on the
   system irrespective of FUSE_USE_VERSION being set to something else.

   As i see fuse_common.h inside /usr/include/fuse directory it says
   FUSE_MAJOR_VERSION -> 2 and FUSE_MINOR_VERSION -> 7. But if the
   FUSE_USE_VERSION is set to 21 then above MINOR version value changes to
   1. Is there a way to get this working ?, i am aware of the
   pkg-config macro's in autoconf which can get what we want at the moment.

   But i wanted to just post my thoughts regarding the FUSE_VERSION check.
   Alike other libraries fuse is not providing the proper MAJOR, MINOR
   versions installed. But only provides it by adding a FUSE_USE_VERSION
   flag.

   Comments welcome.

Regards
-- 
Harshavardhana
"Software gets slower faster as Hardware gets faster"