1. Must produce a lex/yacc-based compiler that compiles the example program into assembly code that gcc accepts and can produce an executable from. You may or may not have any separate C source files; this assignment is still small enough that all you might have is your lex and yacc input source files. 2. Your compiler must also correctly compile similar programs as the above, with multiple functions defined, and multiple function call statements inside a function body.
3. You must have a Makefile that compiles your program. For all C compiling, including the output of the lex and yacc commands, it must use -Wall as a compilation flag. It must have a "clean" target that removes all auto-generated files, including those from lex and yacc. It must have a "test" target that invokes your mini-compiler program on an example source file, then invokes gcc on your resulting assembly source file, and then runs the resulting executable file.
4. Your code must have zero warnings under the -Wall flag usage.
5. Submit a zip file with your lex, yacc, and C source files (not generated ones), and your Makefile and the test program referred to in your "test" target.
That's it!
Hints and Help
Above the rules section in your yacc source file, you will want to have something like this:
/* token value data types */
%union { int ival; char* str; }
/* Starting non-terminal */
%start prog
%type function statements statement funcall
/* Token types */
%token cival> NUMBER COMMA SEMICOLON LPAREN RPAREN LBRACE RBRACE
%token ID STRING