Stefan Fiedler:

package/base/linux/linux.conf

@@ -34,6 +34,15 @@ set_confopt
 
 case "$xpkg" in
 	linux2[46])
+		# Do not modify the C compiler options, e.g. using the gcc -s
+		# option causes this build error for x86_64:
+		#   VDSOSYM arch/x86/vdso/vdso-syms.lds
+		# x86_64-unknown-linux-gnu-nm: arch/x86/vdso/vdso.so.dbg: no symbols
+		#   LD      arch/x86/vdso/built-in.o
+		# arch/x86/vdso/vdso-syms.lds: file not recognized: File truncated
+		# make[1]: *** [arch/x86/vdso/built-in.o] Error 1
+		# make: *** [arch/x86/vdso] Error 2
+		export CC_WRAPPER_BYPASS=1
 		;;
 	linux2[46]-source)
 		unset splitdesc_dev
@@ -295,8 +304,10 @@ lx_config ()
 
 	if [[ $treever != 24* ]] ; then
 		echo "Create symlinks and a few headers for <$lx_cpu> ... "
-		eval $MAKE include/asm
 		yes '' | eval $MAKE oldconfig > /dev/null
+		# running the line below before the one above might make silentoldconfig,
+		# which fails if standard file descriptors are not ttys
+		eval $MAKE include/asm
 	fi
 
 	# get kernel_release
@@ -306,10 +317,8 @@ lx_config ()
 		gcc -E -I./include conftest.c | tail -n 1   \
 		| cut -d '"' -f 2 && rm -f conftest.c )"
 	else
-	    make include/config/kernel.release
-	    lx_kernelrelease="$( < include/config/kernel.release )"
+	    lx_kernelrelease="$( make kernelversion )"
 	fi
-
 	lx_cleanup
 
 	echo "Generic linux source configuration finished."
@@ -544,8 +553,6 @@ main_lx_headers() {
 	# in include/asm-$lx_src_cpu. Fix by creating a symlink from include/asm
 	# to asm-$lx_src_cpu.
 	# Modifying the c #include directives is not strictly necessary.
-	versionhotfix 2.6.25.10
-	find include/ -type f | xargs -r sed -i "/include/ s,<asm/,<asm-$lx_src_cpu/,g"
 	mkdir -p dest/include/asm-$lx_src_cpu
 	ln -sv asm-$lx_src_cpu dest/include/asm