ruby - 安装 ffi 出错

Question

似乎可以解决这个问题。

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

/remote/part/usern/.rvm/rubies/ruby-1.9.3-p448/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 rb_thread_call_with_gvl()... yes
checking for rb_thread_call_without_gvl()... yes
checking for ffi_prep_cif_var()... no
creating extconf.h
creating Makefile

make
libffi.gnu.mk:16: Extraneous text after `else' directive
libffi.gnu.mk:18: *** only one `else' per conditional.  Stop.


Gem files will remain installed in /remote/part/usern/.rvm/gems/ruby-1.9.3-p448@myrailsapp/gems/ffi-1.9.0 for inspection.
Results logged to /remote/part/usern/.rvm/gems/ruby-1.9.3-p448@myrailsapp/gems/ffi-1.9.0/ext/ffi_c/gem_make.out

有任何想法吗？

Answer 1

之前试试这个

sudo ln -s /usr/bin/gcc /usr/bin/gcc-4.2
apt-get install ruby{version}-dev

bundle install ffi

它对我有用

Answer 2

我不得不将 gcc 设置为 4.2 并且它起作用了。我还在 Gemfile.lock 中将 ffi 版本更改为 1.0.9。

导出 PATH=/opt/gcc-4.2.0/bin/:$PATH

Answer 3

嗨，这与我更新了我的 GCC 编译器有关，并且还做了 Harpreet 提到的技巧（ffi 版本降级）但没有必要 ffi-1.9.3 也可以正常工作：D

在 Gemfile.lock

    ffi (1.9.3)
    ffi (1.9.3-x86-mingw32)

https://github.com/kennethreitz/osx-gcc-installer

单击此处带有适用于所有操作系统（不仅是 MacOSX）的 .pkg 安装程序的 github 存储库