From: Ben Hutchings <ben@decadent.org.uk>
Subject: [PATCH] Don't check autoconf.h or version.h directly
Last-Update: 2010-05-23

The generated headers may be installed in various different places.
Don't make assumptions about where they are.  Use 'make kernelversion'
to check the version.

Index: alsa-driver-1.0.23+dfsg/configure.in
===================================================================
--- alsa-driver-1.0.23+dfsg.orig/configure.in	2010-05-28 19:14:23.000000000 +0200
+++ alsa-driver-1.0.23+dfsg/configure.in	2010-05-28 19:14:23.000000000 +0200
@@ -212,77 +212,11 @@
 
 dnl Check for kernel version...
 AC_MSG_CHECKING(for kernel version)
-KERNEL_INC="-I$CONFIG_SND_KERNELSRC/include"
-MAKE_ADDS=""
-if test -n "$kernelbuild"; then
-  kpath=""
-  if test -d "$kernelbuild/include"; then
-    kpath="-I$kernelbuild/include"
-  fi
-  if test -d "$kernelbuild/include2"; then
-    kpath="$kpath -I$kernelbuild/include2"
-    MAKE_ADDS="O=$kernelbuild"
-  fi
-  KERNEL_INC="$kpath $KERNEL_INC"
-fi
-HACK_KERNEL_INC=""
-ac_save_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS $KERNEL_INC $HACK_KERNEL_INC"
-if test -n "$kernelbuild" -a -f $kernelbuild/include/$INCLUDE_VERSION_H; then
-  KERNDIR=$kernelbuild
-else
-  KERNDIR=$CONFIG_SND_KERNELSRC
-fi
-AC_TRY_RUN([
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include "$KERNDIR/include/$INCLUDE_VERSION_H"
-#ifndef UTS_RELEASE
-#include "$KERNDIR/include/$INCLUDE_UTSRELEASE_H"
-#endif
-int main()
-{
- FILE *f;
- char kversion[128];
- char kpatchlevel[128];
- char ksublevel[128];
- char kextra[128];
- char *ptr, *dptr;
-#ifdef UTS_RELEASE
- f=fopen("./conftestdata","w");
- if (f) {
-   for (ptr = UTS_RELEASE, dptr = kversion; *ptr != '\0' && isdigit(*ptr); ptr++, dptr++)
-     *dptr = *ptr;
-   *dptr = '\0';
-   if (*ptr == '.')
-     ptr++;
-   for (dptr = kpatchlevel; *ptr != '\0' && isdigit(*ptr); ptr++, dptr++)
-     *dptr = *ptr;
-   *dptr = '\0';
-   if (*ptr == '.')
-     ptr++;
-   for (dptr = ksublevel; *ptr != '\0' && isdigit(*ptr); ptr++, dptr++)
-     *dptr = *ptr;
-   *dptr = '\0';
-   for (dptr = kextra; *ptr != '\0'; ptr++, dptr++)
-     *dptr = *ptr;
-   *dptr = '\0';   
-   fprintf(f,"%s:%s:%s:%s\n",kversion,kpatchlevel,ksublevel,kextra);
-   fclose(f);
-   }
- exit(0);
-#else
- exit(1);
-#endif
-}],kaversion=`cat conftestdata`,
-kaversion="",
-kaversion="")
-CFLAGS="$ac_save_CFLAGS"
-kversion=`echo $kaversion | cut -d : -f 1`
-kpatchlevel=`echo $kaversion | cut -d : -f 2`
-ksublevel=`echo $kaversion | cut -d : -f 3`
-kextraversion=`echo $kaversion | cut -d : -f 4`
+kaversion=`cd "$CONFIG_SND_KERNELSRC" && env -u MAKELEVEL make kernelversion`
+kversion=`echo $kaversion | cut -d . -f 1`
+kpatchlevel=`echo $kaversion | cut -d . -f 2`
+ksublevel=`echo $kaversion | cut -d . -f 3`
+kextraversion=`echo $kaversion | cut -d . -f 4`
 kversion=`expr $kversion + 0`
 kpatchlevel=`expr $kpatchlevel + 0`
 ksublevel=`expr $ksublevel + 0`