linux - 从头开始构建 Linux 时出现 glibc 错误

Question

当我为 LFS 7.1 制作 glibc-2.14.1 时出现以下错误。我使用 ubuntu 作为主机操作系统。

gcc ../sysdeps/unix/sysv/linux/syslog.c -c -std=gnu99 -fgnu89-inline -O2 -Wall -Winline 
-Wwrite-strings -fmerge-all-constants -g -Wstrict-prototypes -mpreferred-stack-
boundary=2  -Wa,-mtune=i686 -fexceptions   -I../include -I/mnt/lfs/sources/glibc-
build/misc -I/mnt/lfs/sources/glibc-build -I../sysdeps/i386/elf -
I../nptl/sysdeps/unix/sysv/linux/i386/i686 -I../sysdeps/unix/sysv/linux/i386/i686 -
I../nptl/sysdeps/unix/sysv/linux/i386 -I../sysdeps/unix/sysv/linux/i386 -
I../nptl/sysdeps/unix/sysv/linux -I../nptl/sysdeps/pthread -I../sysdeps/pthread -
I../sysdeps/unix/sysv/linux -I../sysdeps/gnu -I../sysdeps/unix/common -
I../sysdeps/unix/mman -I../sysdeps/unix/inet -I../sysdeps/unix/sysv/i386 -
I../nptl/sysdeps/unix/sysv -I../sysdeps/unix/sysv -I../sysdeps/unix/i386 -
I../nptl/sysdeps/unix -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/i386/i686/fpu -
I../sysdeps/i386/i686/multiarch -I../nptl/sysdeps/i386/i686 -I../sysdeps/i386/i686 -
I../sysdeps/i386/i486 -I../nptl/sysdeps/i386/i486 -I../sysdeps/i386/fpu -
I../nptl/sysdeps/i386 -I../sysdeps/i386 -I../sysdeps/wordsize-32 -
I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -
I../sysdeps/ieee754 -I../sysdeps/generic/elf -I../sysdeps/generic -I../nptl  -I.. -
I../libio -I. -nostdinc -isystem /usr/lib/gcc/i686-linux-gnu/4.6/include -isystem 
/usr/lib/gcc/i686-linux-gnu/4.6/include-fixed -isystem /tools/include -D_LIBC_REENTRANT 
-include ../include/libc-symbols.h       -o /mnt/lfs/sources/glibc-build/misc/syslog.o 
-MD -MP -MF /mnt/lfs/sources/glibc-build/misc/syslog.o.dt -MT /mnt/lfs/sources/glibc-
build/misc/syslog.o 
In file included from ../sysdeps/unix/sysv/linux/syslog.c:10:0:
../misc/syslog.c: In function '__vsyslog_chk':
../misc/syslog.c:144:9: warning: variable 'prioff' set but not used [-Wunused-but-set-  
variable]
../misc/syslog.c:123:1: sorry, unimplemented: inlining failed in call to 'syslog':   
 function body not available
../misc/syslog.c:155:9: sorry, unimplemented: called from here
make[2]: *** [/mnt/lfs/sources/glibc-build/misc/syslog.o] Error 1
make[2]: Leaving directory `/mnt/lfs/sources/glibc-2.14.1/misc'
make[1]: *** [misc/subdir_lib] Error 2
make[1]: Leaving directory `/mnt/lfs/sources/glibc-2.14.1'
make: *** [all] Error 2

谁能告诉我该怎么做？

Answer 1

对于 glibc 2.15，我必须像 ks1322 那样做:

$ ../glibc2.15/configure CFLAGS="-O2 -U_FORTIFY_SOURCE -fno-stack-protector"
$ make

-O2需要恢复默认优化，以避免一些失败。

-U_FORTIFY_SOURCE需要避免 gcc ../sysdeps/unix/sysv/linux/syslog.c 失败( In function ‘__vsyslog_chk’: [...] inlining failed in call to ‘syslog’ )

-fno-stack-protector需要避免 gcc 失败[...] elf/dl-allobjs.os libc_pic.a ((init-first.os):(.data+0x0): multiple definition of '__libc_multiple_libcs')。

有了这些CFLAGS , 我只收到警告 ( errlist.c count 133 inflated to GLIBC_2.12 count 134 (old errno.h?) )。

附言不使用 gold 也很重要链接器( ld.gold ，来自 binutils-gold 包)，因为 libc的 config会拒绝它。这很容易通过更改 /usr/bin/ld 来完成。来自 ld.gold 的符号链接(symbolic link)至 ld.bfd .