Android 构建过程中出现错误：iproute yacc 问题

Question

我在构建 AOSP 源代码时遇到错误： POSIX Yacc 不支持 %name-prefix [-Wyacc]

更多详情：

   10 | %token-table
      | ^~~~~~~~~~~~
external/iproute2/tc/emp_ematch.y:11.1-14: warning: POSIX Yacc does not support %error-verbose [-Wyacc]
   11 | %error-verbose
      | ^~~~~~~~~~~~~~
external/iproute2/tc/emp_ematch.y:11.1-14: warning: deprecated directive: ‘%error-verbose’, use ‘%define parse.error verbose’ [-Wdeprecated]
   11 | %error-verbose
      | ^~~~~~~~~~~~~~
      | %define parse.error verbose
external/iproute2/tc/emp_ematch.y:12.14-22: warning: POSIX Yacc does not support string literals [-Wyacc]
   12 | %name-prefix "ematch_"
      |              ^~~~~~~~~
external/iproute2/tc/emp_ematch.y:12.1-22: warning: POSIX Yacc does not support %name-prefix  [-Wyacc]
   12 | %name-prefix "ematch_"
      | ^~~~~~~~~~~~~~~~~~~~~~
external/iproute2/tc/emp_ematch.y:12.1-22: warning: deprecated directive: ‘%name-prefix "ematch_"’, use ‘%define api.prefix {ematch_}’ [-Wdeprecated]
   12 | %name-prefix "ematch_"
      | ^~~~~~~~~~~~~~~~~~~~~~
      | %define api.prefix {ematch_}
12:13:00 ninja failed with: exit status 1

Answer 1

几个小时后，我发现这是因为我的机器上没有安装

m4

软件包，解决方案只是运行：

sudo apt install m4

并继续建设。