Failing to compile 'covered' sources

[jogindersingh]

Hi, I have cloned the git repo covered.git and am trying to build the tool. The make is failing with multiple compile errors. I'm able to fix few but it seems there are many. Am I missing something?
--- log from make -----
gen_parser.c: In function ‘GENparse’:
gen_parser.c:69:25: error: implicit declaration of function ‘GENlex’ [-Wimplicit-function-declaration]
69 | #define yylex GENlex
| ^~~~~~
gen_parser.c:4313:16: note: in expansion of macro ‘yylex’
4313 | yychar = yylex ();
| ^~~~~
In file included from ./gen_parser.y:40:
./gen_parser.y:2335:66: error: passing argument 1 of ‘generator_event_comb_cov’ makes pointer from integer without a cast [-Wint-conversion]
2335 | generator_event_comb_cov( @1.ppfline, @1.first_column, TRUE ),
| ~~~~~~~~~~~^~~~~~~~
| |
| unsigned int
generator.new.h:48:74: note: in definition of macro ‘generator_build’
48 | #define generator_build(x, ...) generator_build1( FILE, LINE, x, VA_ARGS )
| ^~~~~~~~~~~
generator.new.h:172:15: note: expected ‘expression *’ {aka ‘struct expression_s ’} but argument is of type ‘unsigned int’
172 | expression exp,
| ~~~~~~~~~~~~^~~
./gen_parser.y:2335:87: error: passing argument 2 of ‘generator_event_comb_cov’ makes pointer from integer without a cast [-Wint-conversion]
2335 | generator_event_comb_cov( @1.ppfline, @1.first_column, TRUE ),
| ~~~~~~~~~~~^~~~
| |
| unsigned int
generator.new.h:48:74: note: in definition of macro ‘generator_build’
48 | #define generator_build(x, ...) generator_build1( FILE, LINE, x, VA_ARGS )
| ^~~~~~~~~~~
generator.new.h:173:15: note: expected ‘func_unit *’ {aka ‘struct func_unit_s ’} but argument is of type ‘unsigned int’
173 | func_unit funit,
| ~~~~~~~~~~~~^~~~~
make[2]: *** [Makefile:497: gen_parser.o] Error 1