高版本gcc 编译 linux-2.6.24 出错的解决方法

一. ubuntu 10.10下编译linux-2.6.24

gcc 4.4.5

1.1 出错信息

  LD      vmlinux.o

  MODPOST vmlinux.o

  CHK     include/linux/version.h

  HOSTCC  scripts/unifdef

linux-2.6.24/scripts/unifdef.c:209: error: conflicting types for ‘getline’

/usr/include/stdio.h:671: note: previous declaration of ‘getline’ was here

make[3]: *** [scripts/unifdef] Error 1

make[2]: *** [headers_install] Error 2

make[1]: *** [vmlinux] Error 2

make: *** [sub-make] Error 2

 解决方法:

linux-2.6.24/scripts/unifdef.c 中的 getline 与 gcc编译过程中/usr/include/stdio.h用的getline函数冲突，将linux-2.6.24/scripts/unifdef.c下的 getline改名为parseline

diff --git a/scripts/unifdef.c b/scripts/unifdef.c
index 552025e..977e682 100644
--- a/scripts/unifdef.c
+++ b/scripts/unifdef.c
@@ -206,7 +206,7 @@ static void done(void);
static void error(const char *);
static int findsym(const char *);
static void flushline(bool);
-static Linetype getline(void);
+static Linetype parseline(void);
static Linetype ifeval(const char **);
static void ignoreoff(void);
static void ignoreon(void);
@@ -512,7 +512,7 @@ process(void)
for (;;) {
linenum++;
-     lineval = getline();
+     lineval = parseline();
trans_table[ifstate[depth]][lineval]();
debug("process %s -> %s depth %d",
linetype_name[lineval],
@@ -526,7 +526,7 @@ process(void)
* help from skipcomment().
*/
static Linetype
-getline(void)
+parseline(void)
{
const char *cp;
int cursym;

1.2出错信息

  CC      arch/x86/boot/video.o

/root/fs_all/kernel/linux-2.6.24/arch/x86/boot/boot.h: Assembler messages:

/root/fs_all/kernel/linux-2.6.24/arch/x86/boot/boot.h:112: Error: bad register name `%dil'

make[2]: *** [arch/x86/boot/video.o] Error 1

make[1]: *** [bzImage] Error 2

make: *** [sub-make] Error 2

 解决方法

 出错行中用"=q"替换"=r"

As allan said, replace "=r" with "=q" in the affected line. "dil" (lower 8 bits part of [RE]DI) register is inexistent under x86-32, only available under x86-64.

二. ubuntu 12.04下编译linux-2.6.24
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
1. 出错信息

LDS     arch/x86/kernel/vsyscall_32.lds
  AS      arch/x86/kernel/vsyscall-int80_32.o
  AS      arch/x86/kernel/vsyscall-note_32.o
  SYSCALL arch/x86/kernel/vsyscall-int80_32.so
gcc: error: elf_i386: No such file or directory

解决方法:

61c61
< cmd_syscall = $(CC) -m elf_i386 -nostdlib $(SYSCFLAGS_$(@F)) \
---
> cmd_syscall = $(CC) -m32 -nostdlib $(SYSCFLAGS_$(@F)) \

2. 出错信息

LD .tmp_vmlinux1
kernel/built-in.o: In function `mutex_lock':
/work/x86/2.6.24/linux-2.6.24/kernel/mutex.c:92: undefined reference to `__mutex_lock_slowpath'
kernel/built-in.o: In function `mutex_unlock':
/work/x86/2.6.24/linux-2.6.24/kernel/mutex.c:118: undefined reference to `__mutex_unlock_slowpath'
make: *** [.tmp_vmlinux1] Error 1

解决方法:
sun@ubuntu:/work/x86/2.6.24/linux-2.6.24$ vi kernel/mutex.c

61c61
< static void fastcall noinline __sched
---
> static __used void fastcall noinline __sched
98c98
< static void fastcall noinline __sched
---
> static __used void fastcall noinline __sched
263c263
< static fastcall noinline void
---
> static __used fastcall noinline void

3. 出错信息

arch/x86/boot/boot.h: Assembler messages:
arch/x86/boot/boot.h:112: Error: bad register name `%dil'
make[1]: *** [arch/x86/boot/video.o] Error 1

解决方法:
vi arch/x86/boot/boot.h

109 static inline u8 rdfs8(addr_t addr)
110 {
111     u8 v;
112 //asm volatile("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
113     asm volatile("movb %%fs:%1,%0" : "=q" (v) : "m" (*(u8 *)addr));
114     return v;
115 }