gen_compile: always use -j1 with kernel *_install targets, fixes compilation with make 3.82

ChangeLog

@@ -5,6 +5,10 @@
 # Distributed under the GPL v2
 # $Id$
 
+  16 Aug 2011; Fabio Erculiani <lxnay@gentoo.org> gen_compile.sh:
+  gen_compile: always use -j1 with kernel *_install targets, fixes compilation
+  with make 3.82
+
   06 Aug 2011; Sebastian Pipping <sping@gentoo.org> gen_initramfs.sh:
   No longer copy /lib/libsysfs*so* for multipath-tools (bug #300841, bug
   #377709)

gen_compile.sh

@@ -288,7 +288,7 @@ compile_modules() {
 	compile_generic modules kernel
 	export UNAME_MACHINE="${ARCH}"
 	[ "${INSTALL_MOD_PATH}" != '' ] && export INSTALL_MOD_PATH
-	compile_generic "modules_install" kernel
+	MAKEOPTS="${MAKEOPTS} -j1" compile_generic "modules_install" kernel
 	unset UNAME_MACHINE
 }
 
@@ -312,7 +312,7 @@ compile_kernel() {
 	if [ -n "${firmware_in_kernel_line}" -a "${firmware_in_kernel_line}" != CONFIG_FIRMWARE_IN_KERNEL=y ]
 	then
 		print_info 1 "        >> Installing firmware ('make firmware_install') due to CONFIG_FIRMWARE_IN_KERNEL != y..."
-		compile_generic "firmware_install" kernel
+		MAKEOPTS="${MAKEOPTS} -j1" compile_generic "firmware_install" kernel
 	else
 		print_info 1 "        >> Not installing firmware as it's included in the kernel already (CONFIG_FIRMWARE_IN_KERNEL=y)..."
 	fi