Need help with new frontend development

[daniel at novoaeon dot com dot br]

Hello,

i am trying to develop a GCC frontend using flex and bison as 
lexer/parser.

i've read several documentation (the list below and also the 
gccint.info)

* https://github.com/rabishah/Mini-C-Compiler-using-Flex-And-Yacc/
* http://www.tldp.org/HOWTO/GCC-Frontend-HOWTO.html
* https://gcc.gnu.org/wiki/WritingANewFrontEnd
* https://gcc.gnu.org/ml/gcc-patches/2006-06/msg00648.html
* https://gcc.gnu.org/wiki/FrontEnd/skeleton
* http://blog.lxgcc.net/wp-content/uploads/2011/03/GCC_frontend.pdf
* http://cobolforgcc.sourceforge.net/cobol_14.html#SEC96
* https://gcc.gnu.org/onlinedocs/gccint/Parsing-pass.html#Parsing-pass

but still having some problems to make it work.

the code is on github:

https://github.com/danielneis/gcc-neis-frontend

the project compiles and generates my compiler "neis1". it is a valid 
elf and i can run it with --help and it shows me the help.

when i run it (passing 0 or more arugments), i got:

$ ./gcc/neis1

Execution times (seconds)
phase setup             :   0.00 ( 0%) usr   0.00 ( 0%) sys   0.01 
(100%) wall      55 kB (99%) ggc
 TOTAL                 :   0.00             0.00             0.00        
         56 kB


Sometimes the "phase setup" does not appears.

It seems that my parse funcion is not called, although i have

#undef LANG_HOOKS_PARSE_FILE
#define LANG_HOOKS_PARSE_FILE neis_parse_file

at my neis-lang.c file.

Thanks in advance,

--
Daniel Neis Araujo