安装Ruby gem的问题“ffi”在Ubuntu Server 12.04上 [英] Problems installing Ruby gem "ffi" on Ubuntu Server 12.04

问题描述

我试图使用 bundle 来安装我的新项目所需的gems，但是我在安装'ffi'gem的1.1.5版本时遇到问题。

我正在使用运行在64位Ubuntu Server 12.04的虚拟化安装上的Ruby 1.9.3。运行 bundle 命令时，收到以下错误消息：

  Gem :: Installer :: ExtensionBuildError：错误：无法构建gem本机扩展。 
 
 /home/alex/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb 
检查ffi.h ...否
检查在/ usr / include / ffi中为ffi.h ... no 
检查rb_thread_blocking_region（）...是
检查ruby_native_thread_p（）...是
检查rb_thread_call_with_gvl（）...是
创建extconf.h 
创建Makefile 
 $ b $ make make 
配置libffi 
 /gems/ffi-1.1 .5 / ext / ffi_c / libffi-x86_64-linuxSampleRails 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ems/ruby-1.9.3-p194@SampleRails 
 makeAR_FLAGS =CC_FOR_BUILD =CFLAGS = -Wall -fexceptionsCXXFLAGS =CFLAGS_FOR_BUILD =CFLAGS_FOR_TARGET =INSTALL = / usr / bin / install -cINSTALL_DATA = / usr / bin / install -c -m 644INSTALL_PROGRAM = / usr / bin / install -cINSTALL_SCRIPT = / usr / bin / install -cJC1FLAGS =LDFLAGS =LIBCFLAGS =LIBCFLAGS_FOR_TARGET =MAKE = makeMAKEINFO = / b / gems / ffi-1.1.5 / ext / ffi_c / libffi / missing --run makeinfoPICFLAG =PICFLAG_FOR_TARG ET =RUNTESTFLAGS =SHELL = / bin / bashexec_prefix = / usr / localinfodir = / usr / local / share / infolibdir = / usr / local / libmandir = / usr / local / share / manprefix = / usr / localAR = arAS = asCC = gccCXX = g ++LD = / usr / bin / ld -m elf_x86_64 = / usr / bin / nm -BRANLIB = ranlibDESTDIR =全递归
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ems/ruby-1.9 .3-p194 @ SampleRails 
全部包含
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/include'-1.9.3-p194@SampleRails 
使[3]：没有什么可以为全部完成。 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/include'1.9.3-p194@SampleRails 
全部在测试套件中
 /gems/ffi-1.1 .5 / ext / ffi_c / libffi-x86_64-linux / testsuite'.9.3-p194 @ SampleRails 
 make [3]：无法为all完成。 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/testsuite'9.3-p194@SampleRails 
使用man 
 /gems/ffi-1.1.5 /ext/ffi_c/libffi-x86_64-linux/man'ruby-1.9.3-p194@SampleRails 
 make [3]：***没有规则可以使'ffi.3'上午'。停止。 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/man'uby-1.9.3-p194@SampleRails 
 make [2]：*** [all-recursive ]错误1 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ms/ruby-1.9.3-p194@SampleRails 
 make [1]：*** [全部]错误2 
 /gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ms/ruby-1.9.3-p194@SampleRails 
 /gems/ffi-1.1.5 /ext/ffi_c/libffi-x86_64-linux\"/.libs/libffi_convenience.a] Error 2 
 
 
 /gems/ffi-1.1.5 for inspection。in / home / alex / .rvm / gems / ruby​​-1.9.3-p194 @ SampleRails 
 /gems/ffi-1.1.5/ext/ffi_c/gem_make.out/ruby-1.9.3-p194@SampleRails 
一个错误在安装ffi（1.1.5）时发生，并且Bundler无法继续。
确保`gem install ffi -v'1.1.5'`成功绑定。
  

该错误似乎是由 make [3]引起的：***没有规则使目标'ffi.3' ，'all-am'需要，但我不明白这意味着什么。

有人可以帮我吗？T hanks！

解决方案

安装libffi-dev软件包：

  sudo apt-get install libffi-dev 
  

如果它无法找到libffi的头文件/链接库，那么在现代linux系统上永远不需要 - 只需安装系统的开发包，就可以构建其内部libffi库。

I'm trying to use bundle to install gems required for my new project, but I'm having trouble installing version 1.1.5 of the 'ffi' gem.

I'm using Ruby 1.9.3 running on a virtualised install of 64-bit Ubuntu Server 12.04. When running the bundle command, I receive the following error message:

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /home/alex/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for ffi.h... no
checking for ffi.h in /usr/local/include,/usr/include/ffi... no
checking for rb_thread_blocking_region()... yes
checking for ruby_native_thread_p()... yes
checking for rb_thread_call_with_gvl()... yes
creating extconf.h
creating Makefile

make
Configuring libffi
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux"SampleRails
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ems/ruby-1.9.3-p194@SampleRails
make "AR_FLAGS=" "CC_FOR_BUILD=" "CFLAGS=-Wall -fexceptions" "CXXFLAGS=" "CFLAGS_FOR_BUILD=" "CFLAGS_FOR_TARGET=" "INSTALL=/usr/bin/install -c" "INSTALL_DATA=/usr/bin/install -c -m 644" "INSTALL_PROGRAM=/usr/bin/install -c" "INSTALL_SCRIPT=/usr/bin/install -c" "JC1FLAGS=" "LDFLAGS=" "LIBCFLAGS=" "LIBCFLAGS_FOR_TARGET=" "MAKE=make" "MAKEINFO=/b/gems/ffi-1.1.5/ext/ffi_c/libffi/missing --run makeinfo " "PICFLAG=" "PICFLAG_FOR_TARGET=" "RUNTESTFLAGS=" "SHELL=/bin/bash" "exec_prefix=/usr/local" "infodir=/usr/local/share/info" "libdir=/usr/local/lib" "mandir=/usr/local/share/man" "prefix=/usr/local" "AR=ar" "AS=as" "CC=gcc" "CXX=g++" "LD=/usr/bin/ld -m elf_x86_64" "NM=/usr/bin/nm -B" "RANLIB=ranlib" "DESTDIR=" all-recursive
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ems/ruby-1.9.3-p194@SampleRails
Making all in include
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/include'-1.9.3-p194@SampleRails
make[3]: Nothing to be done for `all'.
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/include'1.9.3-p194@SampleRails
Making all in testsuite
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/testsuite'.9.3-p194@SampleRails
make[3]: Nothing to be done for `all'.
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/testsuite'9.3-p194@SampleRails
Making all in man
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/man'ruby-1.9.3-p194@SampleRails
make[3]: *** No rule to make target `ffi.3', needed by `all-am'. Stop.
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux/man'uby-1.9.3-p194@SampleRails
make[2]: *** [all-recursive] Error 1
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ms/ruby-1.9.3-p194@SampleRails
make[1]: *** [all] Error 2
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux'ms/ruby-1.9.3-p194@SampleRails
/gems/ffi-1.1.5/ext/ffi_c/libffi-x86_64-linux"/.libs/libffi_convenience.a] Error 2


/gems/ffi-1.1.5 for inspection. in /home/alex/.rvm/gems/ruby-1.9.3-p194@SampleRails
/gems/ffi-1.1.5/ext/ffi_c/gem_make.out/ruby-1.9.3-p194@SampleRails
An error occurred while installing ffi (1.1.5), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.1.5'` succeeds before bundling.

The error seems to be caused by the line make[3]: *** No rule to make target 'ffi.3', needed by 'all-am' but I'm none the wiser as to what this means.

Can anybody help me out? Thanks in advance!

解决方案

Install the libffi-dev package:

sudo apt-get install libffi-dev

The ffi gem will build its internal libffi library if it cannot find the headers/link lib for libffi, which on a modern linux system is never what you want - just install your system's dev packages.

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