Question

I would like to call flex to build a .l file, then call gcc to build everything.

I tryed:

comp:
    lex scanner.l   \
    gcc -o a.out main.c hash.c -I.  

error:

lex scanner.l   \
    gcc -o a.out main.c hash.c -I.  
lex: impossible to opne gcc
/usr/bin/m4:stdin:2994: ERROR: end of file in string

and

lex scanner.l
<tab> gcc -o a.out main.c hash.c -I.

error: missing separator.

The lex.yy.c generate by lex has is being included in the main file.

Thanks in advance,

Pedro

Answer 1

all: a.out

lex.yy.c: scanner.l
    lex scanner.l

a.out: lex.yy.c main.c hash.c
    gcc -o a.out main.c hash.c -I.