build: workaround fixdep permission error

make -C ../../../linux-2.6.36-rc8-32
O=/usr/src/linux-2.6.36-rc8-32-obj/x86_64/desktop/. kernelrelease
  HOSTCC  scripts/basic/fixdep
/usr/src/linux-2.6.36-rc8-32/scripts/basic/fixdep.c:398:1:
fatal error: opening dependency file scripts/basic/.fixdep.d:
Permission denied

diff --git a/configure.ac b/configure.ac
index b6b2256fc09ab99d049e58bb9390478d9866a826..d75ddba503b6303246b8ae6bc2e034b9952771b1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -49,7 +49,7 @@ if grep -q "CentOS release 5\." /etc/redhat-release 2>/dev/null ||
        echo "WARNING: This distribution's shipped kernel is not supported.";
 fi;
 AC_MSG_CHECKING([kernel version that we will build against])
-krel="$(make -sC ${kbuilddir} kernelrelease)";
+krel="$(make -sC "$kbuilddir" M=. kernelrelease)";
 kmajor="${krel%%[[^0-9]]*}";
 kmajor="$(($kmajor+0))";
 krel="${krel:${#kmajor}}";