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我相信 conftest 缺少正确的标志，但我无法通过查看 mkmf.log 的内容来找出问题所在，这些内容包含在下面。任何想法，将不胜感激！


have_library: checking for main() in -lidn... -------------------- no



"i486-linux-gnu-gcc -o conftest -I /backfire/staging_dir/host/include/ruby-1.9.1/i486-linux -I /backfire/staging_dir/host/include/ruby-1.9.1/ruby/backward -I /backfire/staging_dir/host/include/ruby-1.9.1 -I. -O2 -I /backfire/staging_dir/host/include -D_FILE_OFFSET_BITS=64 -O2 -I /backfire/staging_dir/host/include -O2 -I /backfire/staging_dir/host/include conftest.c  -L. -L /backfire/staging_dir/host/lib -Wl,-R /backfire/staging_dir/host/lib -L.  -rdynamic -Wl,-export-dynamic     -Wl,-R -Wl, /backfire/staging_dir/host/lib -L /backfire/staging_dir/host/lib -lruby-static  -lpthread -lrt -ldl -lcrypt -lm   -lc"
checked program was:
/* begin /
1: #include "ruby.h"
2: 
3: int main() {return 0;}
/ end */



"i486-linux-gnu-gcc -o conftest -I /backfire/staging_dir/host/include/ruby-1.9.1/i486-linux -I /backfire/staging_dir/host/include/ruby-1.9.1/ruby/backward -I /backfire/staging_dir/host/include/ruby-1.9.1 -I. -O2 -I /backfire/staging_dir/host/include -D_FILE_OFFSET_BITS=64 -O2 -I /backfire/staging_dir/host/include -O2 -I /backfire/staging_dir/host/include conftest.c  -L. -L /backfire/staging_dir/host/lib -Wl,-R /backfire/staging_dir/host/lib -L.  -rdynamic -Wl,-export-dynamic     -Wl,-R -Wl, /backfire/staging_dir/host/lib -L /backfire/staging_dir/host/lib -lruby-static -lidn  -lpthread -lrt -ldl -lcrypt -lm   -lc"
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.so when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.a when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.so when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.a when searching for -lidn
/usr/bin/ld: cannot find -lidn
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /top/
4: int main() {return 0;}
5: int t() { void ((volatile p)()); p = (void (()()))main; return 0; }
/* end */



"i486-linux-gnu-gcc -o conftest -I /backfire/staging_dir/host/include/ruby-1.9.1/i486-linux -I /backfire/staging_dir/host/include/ruby-1.9.1/ruby/backward -I /backfire/staging_dir/host/include/ruby-1.9.1 -I. -O2 -I /backfire/staging_dir/host/include -D_FILE_OFFSET_BITS=64 -O2 -I /backfire/staging_dir/host/include -O2 -I /backfire/staging_dir/host/include conftest.c  -L. -L /backfire/staging_dir/host/lib -Wl,-R /backfire/staging_dir/host/lib -L.  -rdynamic -Wl,-export-dynamic     -Wl,-R -Wl, /backfire/staging_dir/host/lib -L /backfire/staging_dir/host/lib -lruby-static -lidn  -lpthread -lrt -ldl -lcrypt -lm   -lc"
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.so when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.a when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.so when searching for -lidn
/usr/bin/ld: skipping incompatible  /backfire/staging_dir/host/lib/libidn.a when searching for -lidn
/usr/bin/ld: cannot find -lidn
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /top/
4: int main() {return 0;}
5: int t() { main(); return 0; }
/* end */

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1 回答 1

1

Ruby 的 mkmf.rb 使用本机编译器来测试 libidn，但由于您的目标是 MIPS，因此需要使用交叉编译器。我假设 mkmf.log 中列出的 libidn.so 和 libidn.a 文件是为 MIPS 构建的。因为原生 i486 编译器需要 i486 库，所以遇到 MIPS 文件时会报“skipping incompatible”错误。

我认为您需要修改 extconf.rb 文件以指向交叉编译器。就像是：

require 'mkmf'

CONFIG['CC'] = '/path/to/mips-gcc'

此外，您可能需要将 mkmf.rb 指向 MIPS 的 Ruby 头文件。我不确定需要设置什么，但我猜至少CONFIG['arch']应该CONFIG['archdir']在 extconf.rb 文件中被覆盖。

于 2012-02-19T15:40:08.043 回答