为什么不使用RVM安装Ruby 1.9.2-head？

Question

我一直在尝试使用RVM安装Ruby 1.9.2-head,但一直收到此错误消息:

echo executable host ruby is required

为了通过RVM安装Ruby,是否必须拥有系统Ruby？

我有所有的依赖项rvm notes,但我没有安装任何系统Ruby.错误日志显示:

[2011-05-02 07:42:19] make 
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o main.o -c main.c
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o dln.o -c dln.c
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o dmydln.o -c dmydln.c
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o dmyencoding.o -c dmyencoding.c
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o version.o -c version.c
gcc -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long  -fPIC -I. -I.ext/include/i686-linux -I./include -I. -DRUBY_EXPORT   -o dmyversion.o -c dmyversion.c
echo executable host ruby is required.  use --with-baseruby option.; false -I. ./tool/compile_prelude.rb ./prelude.rb miniprelude.c
executable host ruby is required. use --with-baseruby option.
make: *** [miniprelude.c] Error 1

Answer 1

rvm笔记也说

要安装Ruby 1.9.2,您需要安装并设置Ruby 1.8.7.

因此,安装Ruby 1.8.7,将其加载到环境并安装ruby 1.9.2

rvm install ruby-1.8.7-head
rvm use ruby-1.8.7-head
rvm install ruby-1.9.2-head

该解决方案已经过测试.

Answer 2

您不必拥有系统 Ruby，只要您通过 RVM 安装了另一个 Ruby（可能是 Ruby MRI 1.8）即可。

值得庆幸的是，Ruby 1.8 不需要您安装 Ruby，因此您不会遇到引导问题。