ref: c466d3870558bbc5f37062e290c316c7095b0ed2
dir: /cc1/main.c/
/* See LICENSE file for copyright and license details. */ #include <setjmp.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include "../inc/cc.h" #include "arch.h" #include "arg.h" #include "cc1.h" char *argv0; int warnings; jmp_buf recover; static char *output; int onlycpp; static void clean(void) { extern int failure; if (failure && output) remove(output); } static void usage(void) { die("usage: %s [-E] [-D macro[=value]] ... [-I dir] [-w] [-d]" "[-o output] [input]", argv0); } int main(int argc, char *argv[]) { char *base; atexit(clean); ARGBEGIN { case 'w': warnings = 1; break; case 'E': onlycpp = 1; break; case 'D': defmacro(EARGF(usage())); break; case 'd': DBGON(); break; case 'I': incdir(EARGF(usage())); break; case 'o': output = EARGF(usage()); break; default: usage(); } ARGEND if (argc > 1) usage(); /* if run as cpp, only run the preprocessor */ if (!(base = strrchr(argv0, '/'))) base = argv0; if (!strcmp(base, "cpp")) onlycpp = 1; if (output && !freopen(output, "w", stdout)) die("error opening output: %s", strerror(errno)); icpp(); ilex(*argv); if (onlycpp) { outcpp(); } else { next(); while (yytoken != EOFTOK) decl(); } return 0; }