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當我在Rails項目的目錄執行以下命令：爲什麼安裝bson_ext時出現錯誤？
gem install bson_ext
我得到這個錯誤：
#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
在我的Rails項目我使用mongoid。安裝bson_ext gem，它給了我上面的錯誤。
有人可以告訴我是什麼問題？
'哪個安裝'說什麼？ *在/ usr/bin中/安裝*？ - echo $ PATH呢？ –
是的......哪個安裝給了我你所說的......和echo $ PATH給出：/home/absolute/.rvm/gems/ruby-1.9.3-p0/bin:/home/absolute/.rvm/ gems/[email protected]/bin：/home/absolute/.rvm/rubies/ruby-1.9.3-p0/bin：/home/absolute/.rvm/bin：在/ usr/local/bin目錄：/ usr/bin：/ bin：/ usr/local/sbin：/ usr/sbin：/ sbin：/ usr/bin/core_perl：/ opt/java/bin：/ opt/java/db/bin –