CLFS-SYSROOT - arm - 5.8. Glibc-2.6 configure时出错 - 已解决！

高热

1. checking for ld --version-script... no
   
2. *** WARNING: You should not compile GNU libc without versioning. Not using
   
3. *** versioning will introduce incompatibilities so that old binaries
   
4. *** will not run anymore.
   
5. *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer).
   
6. checking for .previous assembler directive... yes
   
7. checking for .protected and .hidden assembler directive... yes
   
8. checking whether __attribute__((visibility())) is supported... yes
   
9. checking for broken __attribute__((visibility()))... no
   
10. checking for broken __attribute__((alias()))... no
    
11. checking whether to put _rtld_local into .sdata section... no
    
12. checking for .preinit_array/.init_array/.fini_array support... no
    
13. configure: error: Need linker with .init_array/.fini_array support.
    

复制代码

宿主系统：debian etch

1. CLFS_HOST="i486-cross-linux-gnu"
   
2. CLFS_TARGET="armeb-unknown-linux-gnu"

复制代码

config.log 中有这样两个错误：

1. configure:5196: checking for ld --version-script
   
2. configure:5222: armeb-unknown-linux-gnu-gcc -g -O2  -shared
   
3.                                 -o conftest.so conftest.o
   
4.                                 -nostartfiles -nostdlib
   
5.                                 -Wl,--version-script,conftest.map
   
6.                        1>&5
   
7. /home/armeb-root/cross-tools/lib/gcc/armeb-unknown-linux-gnu/4.2.1/../../../../armeb-unknown-linux-gnu/bin/ld: unrecognised emulation mode: armelf_linux
   
8. Supported emulations: armelfb_linux armelfb
   
9. collect2: ld returned 1 exit status
   

复制代码

1. configure:5481: checking for .preinit_array/.init_array/.fini_array support
   
2. configure:5494: armeb-unknown-linux-gnu-gcc -g -O2   -o conftest conftest.c
   
3.                      -static -nostartfiles -nostdlib 1>&5
   
4. /home/armeb-root/cross-tools/lib/gcc/armeb-unknown-linux-gnu/4.2.1/../../../../armeb-unknown-linux-gnu/bin/ld: unrecognised emulation mode: armelf_linux
   
5. Supported emulations: armelfb_linux armelfb
   
6. collect2: ld returned 1 exit status
   

复制代码

看起来怎么像是binutils的问题？

高热

发错地方了，版主帮忙挪一下，谢啦！

高热

Woo~
没人遇到么，google了很久也没有发现有用信息

高热

看起来这个问题就是由于使用了大尾的CLFS_TARGET所致。使用员手册中的

CLFS_TARGET="arm-unknown-linux-gnu"

则没有错误。
唉，为什么自己动手建大尾的交叉编译工具链这么难呢？
谁有armeb经验，说一下呀！

高热

很怪异的问题，应该是gcc没有正确产生大尾的目标工具。
做了以下的测试：

1. clfs@debian:~$ echo "int main() {}" > test.c
2. clfs@debian:~$ armeb-unknown-linux-gnu-gcc -c test.c
3. clfs@debian:~$ file test.o
4. test.o: ELF 32-bit MSB relocatable, ARM, version 1 (ARM), not stripped

复制代码

1. clfs@debian:~$ armeb-unknown-linux-gnu-gcc -e main test.o
2. /home/armeb-root/cross-tools/lib/gcc/armeb-unknown-linux-gnu/4.2.1/../../../../armeb-unknown-linux-gnu/bin/ld: unrecognised emulation mode: armelf_linux
3. Supported emulations: armelfb_linux armelfb
4. collect2: ld returned 1 exit status

复制代码

1. clfs@debian:~$ armeb-unknown-linux-gnu-ld -e main test.o
2. clfs@debian:~$ file a.out
3. a.out: ELF 32-bit MSB executable, ARM, version 1 (ARM), statically linked, not stripped

复制代码

1. clfs@debian:~$ /home/armeb-root/cross-tools/lib/gcc/armeb-unknown-linux-gnu/4.2.1/../../../../armeb-unknown-linux-gnu/bin/ld -e main test.o
2. clfs@debian:~$ file a.out
3. a.out: ELF 32-bit MSB executable, ARM, version 1 (ARM), statically linked, not stripped

复制代码

上面的结果很怪异，当gcc间接调用ld时就会出错，直接敲ld命令则没有出错，不解！！
遇到了gcc的bug么？

高热

果然是gcc的bug：
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16350

高热

问题初步解决，放出patch。