Question

$ brew install bison
Warning: bison-3.0.2 already installed
$ bison -V
bison (GNU Bison) 2.3

如何将使用的Bison版本更改为3.0.2？我在OS X 10.9.4上。我在$brew install bison之后重启了我的终端。

更新

我真的不确定这是HomeBrew还是Bison的问题。我用MacPorts重新安装了Bison：

$port install bison
......
$bison -V
bison (GNU Bison) 2.7.12-4996

MacPorts没有安装最新版本的Bison，但它确实将正在使用的Bison版本更改为它安装的版本。

UPDATE ON $ PATH

$echo $PATH
/opt/local/bin:/opt/local/sbin:/usr/local/bin:/Users/my_user_name/.rbenv/shims:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/munki:/usr/local/mysql/bin:/Users/my_user_name/code/bin:/Users/my_user_name/code/bin/git:/Users/my_user_name/code/bin/old_git:/Users/my_user_name/code/bin:/Users/my_user_name/code/bin/git:/Users/my_user_name/code/bin/old_git:/Users/my_user_name/.rvm/bin

Answer 1

我刚遇到同样的问题 - 在我的情况下，brew并没有创建符号链接。您可以强制执行此操作以通过以下方式获取正确的版本：

$ brew unlink bison
Unlinking /usr/local/Cellar/bison/3.0.4... 0 symlinks removed

$ brew link bison
Warning: bison is keg-only and must be linked with --force
Note that doing so can interfere with building software.

$ brew link bison --force
Linking /usr/local/Cellar/bison/3.0.4... 9 symlinks created

$ source ~/.bash_profile
$ bison -V
bison (GNU Bison) 3.0.4

Answer 2

/ usr / local / bin之前的路径中有/ opt / local / bin。默认情况下，Homebrew会安装在/ usr / local / bin中，所以你可能会先在/ opt / local / bin中找到另一个版本。

Answer 3

感谢Andrew回答。稍微改进一下，不需要--force

brew link bison
Warning: bison is keg-only and must be linked with --force
Note that doing so can interfere with building software.

If you need to have this software first in your PATH instead consider 
running:
   echo 'export PATH="/usr/local/opt/bison/bin:$PATH"' >> ~/.zshrc

我在zshrc中使用了建议echo补丁，在源〜/ .zshrc之后，bison是最新版本（使用brew install bison版本）。

Answer 4

$ brew unlink bison
Unlinking /usr/local/Cellar/bison/3.4... 0 symlinks removed

$ brew install bison

$ brew link bison --force
Linking /usr/local/Cellar/bison/3.4... 9 symlinks created

$ echo 'export PATH="/usr/local/opt/bison/bin:$PATH"' >> ~/.bash_profile

$ export LDFLAGS="-L/usr/local/opt/bison/lib"

$ source ~/.bash_profile
$ bison -V
bison (GNU Bison) 3.4

Bison最新版本已安装但尚未使用

4 个答案: