make oldconfig bzImage with GCC 4.9.2 on debian 8

[Dhiraj Bhor <dhirajbhor21@gmail.com>]

Hi all,

I am compiling https://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.20.tar.bz2 

I have gcc 4.9.2 installed on my Debbian 8.0. I have compiled linux-kernel-2.6.32 on this box. Somebody may point out that this is old version and i do not waste time in compile but this is requirement and i have to do it.

Currently  i have applied following patches to this kernel:

diff -Narup linux-2.6.20-orig/arch/i386/boot/compressed/misc.c linux-2.6.20/arch/i386/boot/compressed/misc.c

--- linux-2.6.20-orig/arch/i386/boot/compressed/misc.c 2007-02-04 11:44:54.000000000 -0700

+++ linux-2.6.20/arch/i386/boot/compressed/misc.c 2007-02-09 12:04:46.000000000 -0700

@@ -372,8 +372,8 @@ asmlinkage void decompress_kernel(void *

 #endif

 

  makecrc();

- putstr("Uncompressing Linux... ");

+ putstr("Starting... ");

  gunzip();

- putstr("Ok, booting the kernel.\n");

+ //putstr("Ok, booting the kernel.\n");

  return;

 }

diff -Narup linux-2.6.20-orig/kernel/printk.c linux-2.6.20/kernel/printk.c

--- linux-2.6.20-orig/kernel/printk.c 2007-02-04 11:44:54.000000000 -0700

+++ linux-2.6.20/kernel/printk.c 2007-02-09 12:04:24.000000000 -0700

@@ -115,6 +115,8 @@ static int preferred_console = -1;

 /* Flag: console code may call schedule() */

 static int console_may_schedule;

 

+static int printk_dots = 1;

+

 #ifdef CONFIG_PRINTK

 

 static char __log_buf[__LOG_BUF_LEN];

@@ -122,6 +124,14 @@ static char *log_buf = __log_buf;

 static int log_buf_len = __LOG_BUF_LEN;

 static unsigned long logged_chars; /* Number of chars produced since last read+clear operation */

 

+static int __init printk_dots_setup(char *str)

+{

+    printk_dots = simple_strtoul(str, NULL, 10);

+    return 1;

+}

+

+__setup("printk_dots=", printk_dots_setup);

+

 static int __init log_buf_len_setup(char *str)

 {

  unsigned long size = memparse(str, &str);

@@ -359,7 +369,16 @@ static void _call_console_drivers(unsign

  log_buf_len);

  __call_console_drivers(0, end & LOG_BUF_MASK);

  } else {

- __call_console_drivers(start, end);

+ if (msg_log_level <= 2 /* KERN_CRIT, KERN_ALERT, KERN_EMERG */

+    || printk_dots == 0) {

+ __call_console_drivers(start, end);

+ }

+ else {

+ char orig = LOG_BUF(start);

+ LOG_BUF(start) = '.';

+ __call_console_drivers(start, start + 1);

+ LOG_BUF(start) = orig;

+ }

  }

  }

 }

Index: linux-2.6.20.4/Makefile

===================================================================

--- linux-2.6.20.4.orig/Makefile

+++ linux-2.6.20.4/Makefile

@@ -412,10 +412,12 @@ ifeq ($(config-targets),1)

 include $(srctree)/arch/$(ARCH)/Makefile

 export KBUILD_DEFCONFIG

 

-config %config: scripts_basic outputmakefile FORCE

+config: scripts_basic outputmakefile FORCE

+ $(Q)mkdir -p include/linux include/config

+ $(Q)$(MAKE) $(build)=scripts/kconfig $@

+%config: scripts_basic outputmakefile FORCE

  $(Q)mkdir -p include/linux include/config

  $(Q)$(MAKE) $(build)=scripts/kconfig $@

-

 else

 # ===========================================================================

 # Build targets only - this includes vmlinux, arch specific targets, clean

@@ -1439,7 +1441,7 @@ endif

  $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

 

 # Modules

-/ %/: prepare scripts FORCE

+/: prepare scripts FORCE

  $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \

  $(build)=$(build-dir)

 %.ko: prepare scripts FORCE

Index: linux-2.6.20.4/scripts/mod/sumversion.c

===================================================================

--- linux-2.6.20.4.orig/scripts/mod/sumversion.c

+++ linux-2.6.20.4/scripts/mod/sumversion.c

@@ -8,6 +8,7 @@

 #include <errno.h>

 #include <string.h>

 #include "modpost.h"

+#include <linux/limits.h>

 /*

  * Stolen form Cryptographic API.

--- ../linux/arch/i386/kernel/Makefile  2007-03-23 13:52:51.000000000 -0600

+++ arch/i386/kernel/Makefile   2015-05-26 08:54:54.206372389 -0600

@@ -56,7 +56,7 @@

 # The DSO images are built using a special linker script.

 quiet_cmd_syscall = SYSCALL $@

-      cmd_syscall = $(CC) -m elf_i386 -nostdlib $(SYSCFLAGS_$(@F)) \

+      cmd_syscall = $(CC) -m32 -nostdlib $(SYSCFLAGS_$(@F)) \

                          -Wl,-T,$(filter-out FORCE,$^) -o $@

 export CPPFLAGS_vsyscall.lds += -P -C -U$(ARCH)

After this i got some error while make bzImage as follows:

  LD      arch/i386/lib/built-in.o

  CC      arch/i386/lib/bitops.o

  AS      arch/i386/lib/checksum.o

  CC      arch/i386/lib/delay.o

  AS      arch/i386/lib/getuser.o

  CC      arch/i386/lib/memcpy.o

  AS      arch/i386/lib/putuser.o

  AS      arch/i386/lib/semaphore.o

  CC      arch/i386/lib/strstr.o

  CC      arch/i386/lib/usercopy.o

In file included from include/linux/blkdev.h:10:0,

                 from arch/i386/lib/usercopy.c:10:

include/linux/pagemap.h: In function ‘fault_in_pages_readable’:

include/linux/pagemap.h:222:16: warning: variable ‘c’ set but not used [-Wunused-but-set-variable]

  volatile char c;

                ^

  AR      arch/i386/lib/lib.a

  GEN     .version

  CHK     include/linux/compile.h

  UPD     include/linux/compile.h

  CC      init/version.o

  LD      init/built-in.o

  LD      vmlinux

kernel/built-in.o: In function `mutex_lock':

(.sched.text+0xea5): undefined reference to `__mutex_lock_slowpath'

kernel/built-in.o: In function `mutex_unlock':

(.sched.text+0xeb5): undefined reference to `__mutex_unlock_slowpath'

Makefile:744: recipe for target 'vmlinux' failed

make: *** [vmlinux] Error 1

I am doing this as a requirement. Please help me resolve this issue.

Thanks in advance.

Dhiraj