無法編譯ruby擴展：您選擇的CPU不支持x86-64指令集

Question

我無法使用RVM和ruby 2.3.0（2.2.1是相同的）編譯ruby擴展，其中包含消息： city。 cc：1：0：錯誤：您選擇的CPU不支持x86-64指令集 我在64位CPU上使用x86_64 Debian Wheezy，x86_64 ruby​​和gcc。 儘管如此，似乎紅寶石使用-march=native它會產生問題。我無法弄清楚如何解決這個問題。下面

詳情：

編譯一個例子擴展：

gem install cityhash 
Building native extensions. This could take a while... 
ERROR: Error installing cityhash: 
    ERROR: Failed to build gem native extension. 

current directory: /usr/local/rvm/gems/ruby-2.3.0/gems/cityhash-0.8.1/ext/cityhash 
/usr/local/rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160317-15208-1shn16g.rb extconf.rb 
creating Makefile 

current directory: /usr/local/rvm/gems/ruby-2.3.0/gems/cityhash-0.8.1/ext/cityhash 
make "DESTDIR=" clean 

current directory: /usr/local/rvm/gems/ruby-2.3.0/gems/cityhash-0.8.1/ext/cityhash 
make "DESTDIR=" 
compiling city.cc 
cc1plus: warning: command line option ‘-Wdeclaration-after-statement’ is valid for C/ObjC but not for C++ [enabled by default] 
cc1plus: warning: command line option ‘-Wimplicit-function-declaration’ is valid for C/ObjC but not for C++ [enabled by default] 
city.cc:1:0: error: CPU you selected does not support x86-64 instruction set 
make: *** [city.o] Błąd 1 

make failed, exit code 2 

Gem files will remain installed in /usr/local/rvm/gems/ruby-2.3.0/gems/cityhash-0.8.1 for inspection. 
Results logged to /usr/local/rvm/gems/ruby-2.3.0/extensions/x86_64-linux/2.3.0/cityhash-0.8.1/gem_make.out 

生成文件試圖運行這些命令：

$ make -n 
echo compiling city.cc 
g++ -I. -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0 -I. -g -O3 -Wall -march=native -fPIC -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat -o city.o -c city.cc 
echo compiling cityhash.cc 
g++ -I. -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0/x86_64-linux -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0/ruby/backward -I/usr/local/rvm/rubies/ruby-2.3.0/include/ruby-2.3.0 -I. -g -O3 -Wall -march=native -fPIC -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat -o cityhash.o -c cityhash.cc 
echo linking shared-object cityhash/cityhash.so 
rm -f cityhash.so 
g++ -shared -o cityhash.so city.o cityhash.o -L. -L/usr/local/rvm/rubies/ruby-2.3.0/lib -Wl,-R/usr/local/rvm/rubies/ruby-2.3.0/lib -L. -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,-R/usr/local/rvm/rubies/ruby-2.3.0/lib -L/usr/local/rvm/rubies/ruby-2.3.0/lib -lruby -lpthread -lrt -ldl -lcrypt -lm -lc 

UNAME，紅寶石，GCC版本 - 似乎都64位：

$ uname -a 
Linux bukwica-prod 3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u6 x86_64 GNU/Linux 
$ ruby -v 
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux] 
$ gcc -v 
Using built-in specs. 
COLLECT_GCC=gcc 
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper 
Target: x86_64-linux-gnu 
Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.2-5' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu 
Thread model: posix 
gcc version 4.7.2 (Debian 4.7.2-5) 

..although我不知道爲什麼-match =原生我得到的Pentium-M

$ gcc -march=native -Q --help=target |grep march 
-march=        pentium-m 

我的想法，請幫助！

Answer 1

它被set explicitly in the gem（錯誤地）

%w{g O3 Wall march=native}.each do |flag| 
    flag = "-#{flag}" 
    $CPPFLAGS += " #{flag}" unless $CPPFLAGS.split.include? flag 
end 

應該是：

%w{g O3 Wall march}.each do |flag| 
    flag = "-#{flag}" 
    $CPPFLAGS += " #{flag}" unless $CPPFLAGS.split.include? flag 
end 

這pull request更新，徹底清除遊行，但它是真的老了，所以不要對任何事情改變有指望。

您可以覆蓋其中bundle通過把這個在您的Gemfile拉寶石：

gem 'cityhash', :git => 'git://github.com/lyfeyaj/cityhash.git' 

這將安裝包含拉入請求