编译libgcc xgcc错误 [英] Compilng libgcc xgcc error

问题描述

我试图安装交叉编译器，本教程，并且当我想创建libgcc时，我只是将在我的终端中创建all-target-libgcc
。这使得抛出错误

 检查ln -s是否工作...是
检查i586-elf-gcc。 ../usr/src/build-gcc/./gcc/xgcc -B / usr / src / build-gcc /./ gcc / -B / usr / local / cross / i586-elf / bin / -B / usr / local / cross / i586-elf / lib / -isystem / usr / local / cross / i586-elf / include -isystem / usr / local / cross / i586-elf / sys-include 
检查对象的后缀文件... configure：error：在`/ usr / src / build-gcc / i586-elf / libgcc'中：
 configure：error：无法计算目标文件的后缀：无法编译
请参阅config .log'了解更多详情。 
 make：*** [configure-target-libgcc]错误1 
  

日志我发现

 目标：i586-elf 
配置：../gcc-4.8.0/configure  - -target = i586-elf --prefix = / usr / local / cross  -  disable-nls --enable-languages = c，c ++ --without-headers：（reconfigured）../gcc-4.8.0/configure  - -target = i586-elf --prefix = / usr / local / cross --disable-nls --enable-languages = c，c ++ --without-headers：（reconfigured）../gcc-4.8.0/configure  - -target = i586-elf --prefix = / usr / local / cross --disable-nls --enable-languages = c，c ++ --without-headers 
线程模型：single 
 gcc version 4.8 .0（GCC）
 configure：3358：$？ = 0 
 configure：3347：/usr/src/build-gcc/./gcc/xgcc -B / usr / src / build-gcc /./ gcc /  -  B / usr / local / cross / i586- elf / bin / -B / usr / local / cross / i586-elf / lib / -isystem / usr / local / cross / i586-elf / include -isystem / usr / local / cross / i586-elf / sys-include  - V& 5 
 xgcc：error：无法识别的命令行选项'-V'
 xgcc：致命错误：无输入文件
  

实际上，xgcc没有'-V'选项。我在寻找如何编译libgcc的方法。

在此先感谢

解决方案 libgcc 之前，你建立了一个极其简单的交叉编译器。现在，配置脚本运行的一部分标准测试是测试编译器，看它是否会在正常情况下生成可用的可执行文件。你的裸骨头编译器不能。幸运的是，对于 libgcc ，您不需要生成可执行文件，只需要一个静态库 libgcc.a 。问题在于，愚蠢的GNU autoconf 生成的脚本没有意识到这一点。

我遇到了同样的问题，并设计了一个非常丑陋的解决方法。您需要注释掉gcc源代码目录中libgcc / configure文件的一部分。以下是我为我的版本注释的部分;

在第3484行：

  { $ as_echo$ as_me：$ {as_lineno- $ LINENO}：result：$ ac_file>& 5 
 $ as_echo$ ac_file>& 6; } 
＃BEGIN PHILLIP编辑
＃if test -z$ ac_file;然后：
＃$ as_echo$ as_me：failed program was：>& 5 
＃sed's / ^ / | /'conftest。$ ac_ext>& 5 
 
＃{{$ as_echo$ as_me：$ {as_lineno- $ LINENO}：error：in \` $ ac_pwd'：>& amp ; 5 
＃$ as_echo$ as_me：error：in \`$ ac_pwd'：>& 2;} 
＃{as_fn_set_status 77 
＃as_fn_errorC编译器无法创建可执行文件
＃请参阅\config.log以获取更多详细信息。 $ LINENO5; }; } 
＃fi 
 ac_file ='a.out'
＃END PHILLIP EDIT 
 ac_exeext = $ ac_cv_exeext 
  

希望这有助于。

I'm trying to install cross compiler, this tutorial, and when I want to make libgcc I just put make all-target-libgcc in my terminal. This make throws error

checking whether ln -s works... yes
checking for i586-elf-gcc...  /usr/src/build-gcc/./gcc/xgcc -B/usr/src/build-gcc/./gcc/         -B/usr/local/cross/i586-elf/bin/ -B/usr/local/cross/i586-elf/lib/ -isystem /usr/local/cross/i586-elf/include -isystem /usr/local/cross/i586-elf/sys-include   
checking for suffix of object files... configure: error: in `/usr/src/build-gcc/i586-elf/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
make: *** [configure-target-libgcc] Error 1

In config.log I found

Target: i586-elf
Configured with: ../gcc-4.8.0/configure --target=i586-elf --prefix=/usr/local/cross --        disable-nls --enable-languages=c,c++ --without-headers : (reconfigured) ../gcc-4.8.0/configure --target=i586-elf --prefix=/usr/local/cross --disable-nls --enable-languages=c,c++ --without-headers : (reconfigured) ../gcc-4.8.0/configure --target=i586-elf --prefix=/usr/local/cross --disable-nls --enable-languages=c,c++ --without-headers
Thread model: single
gcc version 4.8.0 (GCC) 
configure:3358: $? = 0
configure:3347:  /usr/src/build-gcc/./gcc/xgcc -B/usr/src/build-gcc/./gcc/ -    B/usr/local/cross/i586-elf/bin/ -B/usr/local/cross/i586-elf/lib/ -isystem /usr/local/cross/i586-elf/include -isystem /usr/local/cross/i586-elf/sys-include    -V >&5
xgcc: error: unrecognized command line option '-V'
xgcc: fatal error: no input files

In fact xgcc don't have '-V' option. I'm searching the way how to compile libgcc.

Thanks in advance

解决方案

Here's the problem: Before you attempted to build libgcc as you described, you built an extreme bare-bones cross compiler. Now, part of the standard tests that the configure script runs is to test the compiler to see if it will produce a working executable file under normal conditions. Your bare bones compiler can't. Fortunately, for libgcc, you don't need to produce an executable, just a static library libgcc.a . The problem is that the stupid GNU autoconf-generated script doesn't realize that.

I encountered this same problem and devised a very ugly workaround. You need to comment out a section of the libgcc/configure file in your gcc source directory. Here's the section I commented out for my version; do something similar to yours:

At line 3484:

{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
$as_echo "$ac_file" >&6; }
# BEGIN PHILLIP EDIT
# if test -z "$ac_file"; then :
  # $as_echo "$as_me: failed program was:" >&5
# sed 's/^/| /' conftest.$ac_ext >&5

# { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
# $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
# { as_fn_set_status 77
# as_fn_error "C compiler cannot create executables
# See \`config.log' for more details." "$LINENO" 5; }; }
# fi
ac_file='a.out'
# END PHILLIP EDIT
ac_exeext=$ac_cv_exeext

Hope this helps.

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