Re: [fuse-devel] Problems compiling xattr support on SUSE

[John E. <jea...@si...>]

It has been pointed out to me that my previous solution only accounted
for the case where one was building against the running kernel. I have
updated the patch to take the --with-kernel option into account.

--
 John Eastman


John Eastman wrote:

>I ran into some problems compiling the fuse (2.4.0/2.4.1) kernel module
>on a SUSE 9.3 distribution with the "stock" kernel.
>
>Investigating the problem, I realized that SUSE packages their kernel
>source and kernel symbols separately. In the module installation
>directory (/lib/modules/<kernel version>) the build symbolic link points
>to the installed symbols, while the source symbolic link points to the
>actual source. This slight abnormality causes the test for kernel xttr
>support to fail, since the build/include/linux directory does not
>contain all of kernel includes (only version.h and autoconf.h) and the
>test is looking for attr.h.
>
>To fix the problem, I had to manually change the configure script. I
>changed the location of where the test was looking for the file, which
>worked. Instead of submitting a patch to the configure script, I created
>a, very simple, patch on the configure.ac that was included in the
>kernel directory to check for the xattr.h file in the source directory
>rather than the build directory.
>
>Hopefully this helps others who might run into this situation.
>
>  
>
=========================================

Patch
=========================================

diff -uNr fuse-2.4.1-orig/kernel/configure.ac fuse-2.4.1/kernel/configure.ac
--- fuse-2.4.1-orig/kernel/configure.ac 2005-10-11 08:37:55.000000000 -0500
+++ fuse-2.4.1/kernel/configure.ac      2005-10-20 16:10:04.000000000 -0500
@@ -9,8 +9,10 @@
        [  --with-kernel=PATH      Specify location of kernel source ],
        [kernelsrc="$withval"])

+sourcelink=$kernelsrc
 if test -z "$kernelsrc"; then
        buildlink=/lib/modules/`uname -r`/build
+       sourcelink=/lib/modules/`uname -r`/source
        if test -e $buildlink; then
                kernelsrc=`(cd $buildlink; /bin/pwd)`
        else
@@ -84,7 +86,19 @@
                AC_DEFINE(HAVE_KERNEL_XATTR, 1, [Kernel has xattr support])
                AC_MSG_RESULT([yes])
        else
-               AC_MSG_RESULT([no])
+               if test -e $sourcelink; then
+                       if test -f $srclink/include/linux/xattr.h; then
+                               AC_DEFINE(HAVE_KERNEL_XATTR, 1, [Kernel
has xattr support])
+                               AC_MSG_RESULT([yes])
+                       else
+                               AC_MSG_RESULT([no])
+                       fi
+               else
+                       AC_MSG_RESULT([Not found])
+                       AC_MSG_ERROR([
+                               *** Please specify the location of the
kernel source with
+                               *** the '--with-kernel=SRCDIR' option])
+               fi
        fi

        isuml=no