为什么安装bson_ext会出错？
当我在Rails项目文件夹中执行以下命令时：
gem install bson_ext 我收到这个错误：
#result Building native extensions. This could take a while... ERROR: Error installing bson_ext: ERROR: Failed to build gem native extension. /home/absolute/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb checking for asprintf()... yes checking for ruby/st.h... yes checking for ruby/regex.h... yes checking for ruby/encoding.h... yes creating Makefile make compiling bson_buffer.c compiling cbson.c cbson.c: In function 'write_element': cbson.c:439:17: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration- after-statement] cbson.c: In function 'write_doc': cbson.c:608:5: warning: implicit declaration of function 'bson_buffer_get_max_size' [-Wimplicit-function-declaration] cbson.c: In function 'objectid_generate': cbson.c:911:9: warning: implicit declaration of function 'htonl' [-Wimplicit-function-declaration] cbson.c:919:5: warning: implicit declaration of function 'htons' [-Wimplicit-function-declaration] compiling encoding_helpers.c linking shared-object bson_ext/cbson.so make install /bin/install -c -m 0755 cbson.so /home/absolute/.rvm/gems/ruby-1.9.3-p0/gems/bson_ext-1.6.2/ext/bson_ext make: /bin/install: Command not found make: *** [/home/absolute/.rvm/gems/ruby-1.9.3-p0/gems/bson_ext-1.6.2/ext/bson_ext/cbson.so] Error 127 Gem files will remain installed in /home/absolute/.rvm/gems/ruby-1.9.3- p0/gems/bson_ext-1.6.2 for inspection. Results logged to /home/absolute/.rvm/gems/ruby-1.9.3-p0/gems/bson_ext-1.6.2/ext/cbson/gem_make.out
我在我的Rails项目中使用mongoid。 安装bson_ext gem，它给我上面的错误。
谁能告诉我这是什么问题？
不确定为什么你的make没有使用正确的install 。 但是快速修复很容易：
sudo ln -s /usr/bin/install /bin/install
这会将现有安装链接到/bin并应启用make继续。