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如何在x86_64机器上编译glibc 32bit

本文介绍了如何在x86_64机器上编译glibc 32bit的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试在x86_64上编译glibc(作为辅助，不是系统替代品)2.6，并试图使其生成32位对象.当我给它一个标准配置时，它可以很好地编译，生成通常的64位库对象.一些信息:

I'm trying to compile glibc (as a secondary, not a system replacement) 2.6 on an x86_64, and trying to get it to produce 32-bit objects. When I give it a standard configure, it compiles fine, producing the usual 64-bit library objects. Some info:

$ 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)

在其他事情中，我尝试了以下操作:

Among other things, I've tried the following:

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，但是make导致一系列编译错误，看起来都像这样:

The configure succeeds, but make causes a stream of compilation errors which all look like this:

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 <stdin>:1:

如果添加--with-tls和/或--target = i386-pc-linux-gnu，我将得到相同的结果.

I get the same result if I add --with-tls, and/or --target=i386-pc-linux-gnu.

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 <command line>:1:
/home/USER/build/glibc32-2.6/config.h:3:3: error: #error "glibc cannot be \
compiled without optimization"

同样，-with-tls也会发生同样的事情

Again, the same thing happens with --with-tls

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些.我想念什么吗?

I feel like this should be easier. Am I missing something?

如果您需要更多信息，请告诉我，我会提供.

If you need any more information, let me know and I'll provide it.

尝试5(由EmployedRussian建议)

Attempt 5 (suggested by EmployedRussian)

$ ../../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，构建成功运行了很长时间，直到遇到错误.我进行了搜索，发现有一些建议我添加了"-march"标志.终于成功了:

This time the build runs successfully for a long time before it reaches an error. I did a search and found something suggesting that I add a "-march" flag, which I did. This finally worked:

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

谢谢大家！

推荐答案

我编辑了问题，但后来我意识到正确的方法是添加答案.这是最终有效的方法:

I edited the question, but then I realized the proper way is to add an answer. Here's what finally worked:

 $ ../../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"

我认为将-m32放在CC和CXX中而不是CFLAGS和CXXFLAGS是很重要的，因为在制作过程中至少有一个不使用CFLAGS或CXXFLAGS的编译操作，并且-m32绝对必须始终存在.不知道为什么需要-march=i686(考虑到-m32部分和--host/build选项)，但是确实如此.

I think putting -m32 in CC and CXX instead of CFLAGS and CXXFLAGS was important because there was at least one compile operation during the make which didn't use CFLAGS or CXXFLAGS, and -m32 absolutely has to always be there. Not sure why -march=i686 was necessary (given the -m32 parts and the --host/build options), but it was.

这篇关于如何在x86_64机器上编译glibc 32bit的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

09-03 16:56
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