我正在尝试在x86_64上编译glibc(作为辅助,而不是系统替换)2.6,并试图让它生成32位对象.当我给它一个标准配置时,它编译得很好,产生通常的64位库对象.一些信息:
$ uname -a Linux localhost.localdomain 2.6.18-164.11.1.el5 #1 SMP Wed Jan 20 07:32:21 \ EST 2010 x86_64 x86_64 x86_64 GNU/Linux $ cat /etc/redhat-release CentOS release 5.4 (Final)
除其他外,我尝试了以下内容:
尝试1:
$ # [in build/glibc-2.6]
$ ../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
--with-cpu=i386-pc-linux-gnu
...
checking sysdep dirs... configure: error: The i386-pc-linux-gnu
subspecies of x86_64 is not supported."
尝试2:
$ ../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
--host=i386-pc-linux-gnu
...
$ make
配置成功,但make会导致编译错误流,如下所示:
nptl/sysdeps/i386/tls.h:65:3: error: #error "TLS support is required."
In file included from include/tls.h:6,
from sysdeps/unix/sysv/linux/i386/sysdep.h:30,
from :1:
如果我添加--with-tls和/或--target = i386-pc-linux-gnu,我会得到相同的结果.
[编辑:看起来我很困惑 - 为--build的目标.我尝试添加--build = i386-pc-linux-gnu,以及我试过的所有其他尝试--target.在所有情况下,我得到的结果与以前完全相同.
尝试3:
$ CFLAGS=-m32 \
../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
--host=i386-pc-linux-gnu \
...
In file included from ./../include/libc-symbols.h:55,
from :1:
/home/USER/build/glibc32-2.6/config.h:3:3: error: #error "glibc cannot be \
compiled without optimization"
同样,使用--with-tls也会发生同样的事情
尝试4:
$ CFLAGS="-m32 -O2" \
../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
--host=i386-pc-linux-gnu \
...
gcc ../sysdeps/unix/sysv/linux/i386/sysdep.S -c -I../include \
-I/home/USER/build/glibc32-2.6/csu \
-I/home/USER/build/glibc32-2.6 -I../sysdeps/i386/elf \
-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/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. \
-D_LIBC_REENTRANT -include ../include/libc-symbols.h \
-DHAVE_INITFINI -DASSEMBLER \
-I/home/USER/build/glibc32-2.6/csu/. -DGAS_SYNTAX \
-Wa,--noexecstack \
-o /home/USER/build/glibc32-2.6/csu/sysdep.o \
-MD -MP \
-MF /home/USER/build/glibc32-2.6/csu/sysdep.o.dt \
-MT /home/USER/build/glibc32-2.6/csu/sysdep.o
../sysdeps/unix/i386/sysdep.S: Assembler messages:
../sysdeps/unix/i386/sysdep.S:51: Error: @NTPOFF reloc is not supported \
with 64-bit output format
../sysdeps/unix/i386/sysdep.S:51: Error: junk `@NTPOFF' after expression
我觉得这应该更容易.我错过了什么吗？
如果您需要更多信息,请告诉我,我会提供.
[编辑]
尝试5(由EmployedRussian建议)
$ ../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
CC="gcc -m32" CXX="g++ -m32" i686-linux-gnu
...
gcc -m32 -nostdlib -nostartfiles -shared \
-o /home/USER/build/glibc32-2.6/elf/ld.so
-Wl,-z,combreloc -Wl,-z,relro -Wl,--hash-style=both -Wl,-z,defs
/home/USER/build/glibc32-2.6/elf/librtld.os \
-Wl,--version-script=/home/USER/build/glibc32-2.6/ld.map \
-Wl,-soname=ld-linux.so.2 \
-T /home/USER/build/glibc32-2.6/elf/ld.so.lds
/home/USER/build/glibc32-2.6/elf/librtld.os: In function `add_dependency':
/home/USER/src/glibc-2.6/elf/dl-lookup.c:106: undefined reference to `__sync_fetch_and_add_4'
/home/USER/src/glibc-2.6/elf/dl-lookup.c:110: undefined reference to `__sync_val_compare_and_swap_4'
/home/USER/build/glibc32-2.6/elf/librtld.os: In function `_dl_profile_fixup':
/home/USER/src/glibc-2.6/elf/dl-runtime.c:196: undefined reference to `__sync_val_compare_and_swap_4'
/home/USER/src/glibc-2.6/elf/dl-runtime.c:205: undefined reference to `__sync_fetch_and_add_4'
/home/USER/build/glibc32-2.6/elf/librtld.os: In function `_dl_fixup':
/home/USER/src/glibc-2.6/elf/dl-runtime.c:102: undefined reference to `__sync_val_compare_and_swap_4'
/home/USER/src/glibc-2.6/elf/dl-runtime.c:110: undefined reference to `__sync_fetch_and_add_4'
/home/USER/build/glibc32-2.6/elf/librtld.os: In function `dl_open_worker':
/home/USER/src/glibc-2.6/elf/dl-open.c:425: undefined reference to `__sync_val_compare_and_swap_4'
/home/USER/src/glibc-2.6/elf/dl-open.c:427: undefined reference to `__sync_fetch_and_add_4'
/home/USER/build/glibc32-2.6/elf/librtld.os: In function `_dl_close_worker':
/home/USER/src/glibc-2.6/elf/dl-close.c:407: undefined reference to `__sync_val_compare_and_swap_4'
/home/USER/src/glibc-2.6/elf/dl-close.c:409: undefined reference to `__sync_fetch_and_add_4'
collect2: ld returned 1 exit status
make[2]: *** [/home/USER/build/glibc32-2.6/elf/ld.so] Error 1
make[2]: Leaving directory `/home/USER/src/glibc-2.6/elf'
make[1]: *** [elf/subdir_lib] Error 2
make[1]: Leaving directory `/home/USER/src/glibc-2.6'
make: *** [all] Error 2
这次构建在发生错误之前已成功运行很长时间.我做了一个搜索,发现了一些东西,建议我添加一个"-march"标志,我做了.这最终奏效了:
尝试6:
$ ../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
CC="gcc -m32" CXX="g++ -m32" \
CFLAGS="-O2 -march=i686" \
CXXFLAGS="-O2 -march=i686" \
i686-linux-gnu
感谢大家!
我编辑了这个问题,但后来我意识到正确的方法是添加一个答案.这是最终起作用的:
$ ../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \
--host=i686-linux-gnu \
--build=i686-linux-gnu \
CC="gcc -m32" CXX="g++ -m32" \
CFLAGS="-O2 -march=i686" \
CXXFLAGS="-O2 -march=i686"
我认为-m32使用CC和CXX代替CFLAGS和CXXFLAGS很重要,因为在make期间至少有一个编译操作没有使用CFLAGS或CXXFLAGS,并且-m32绝对必须始终存在.不确定为什么-march=i686有必要(给定-m32部件和--host/build选项),但确实如此.
以下适用于我:
../../src/glibc-2.6/configure --prefix=$HOME/glibc32-2.6 \ CC="gcc -m32" CXX="g++ -m32" i686-linux-gnu
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