[英]Flex/Bison: Error when building a sample project to generate Cpp
I'm trying to generate Cpp (not C) using flex and bison. 我正在尝试使用flex和bison生成Cpp(不是C)。 I got a sample code from GitHub ( https://github.com/ezaquarii/bison-flex-cpp-example ) and trying to build it.
我从GitHub( https://github.com/ezaquarii/bison-flex-cpp-example )获得了示例代码,并尝试构建它。
Here is Makefile content 这是Makefile的内容
all:
flex -o scanner.cpp scanner.l
bison -o parser.cpp parser.y
g++ -g main.cpp scanner.cpp parser.cpp interpreter.cpp command.cpp -o a.out
clean:
rm -rf scanner.cpp
rm -rf parser.cpp parser.hpp location.hh position.hh stack.hh
rm -rf a.out
When I run command make , I get the following error 当运行命令make时 ,出现以下错误
flex -o scanner.cpp scanner.l
bison -o parser.cpp parser.y
"parser.y", line 29: junk after `%%' in definition section
Makefile:2: recipe for target 'all' failed
make: *** [all] Segmentation fault
Here is my bison version (Linux OS) 这是我的野牛版(Linux OS)
bison --version
bison++ Version 1.21.9-1, adapted from GNU bison by coetmeur@icdc.fr
Maintained by Magnus Ekdahl <magnus@debian.org>
May someone tell me what is going wrong ? 有人可以告诉我怎么了吗?
I updated my bison version. 我更新了野牛版本。
bison --version
bison (GNU Bison) 3.0.4
Written by Robert Corbett and Richard Stallman.
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@user6556709, thanks for the fix. @ user6556709,感谢您的修复。
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