ref: 740c98a5af0657dcccd2fe2b08def6fb2d29f498
dir: /cc1/main.c/
static char sccsid[] = "@(#) ./cc1/main.c"; #include <setjmp.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include "../inc/arg.h" #include "../inc/scc.h" #include "cc1.h" char *argv0, *infile; int warnings; jmp_buf recover; static struct items uflags; int onlycpp, onlyheader; extern int failure; static void defmacro(char *macro) { char *p = strchr(macro, '='); if (p) *p++ = '\0'; else p = "1"; defdefine(macro, p, "command-line"); } static void usage(void) { die("usage: cc1 [-Ewd] [-D def[=val]]... [-U def]... " "[-I dir]... [-o output] [input]"); } int main(int argc, char *argv[]) { int i; ilex(); icpp(); icode(); ibuilts(); ARGBEGIN { case 'D': defmacro(EARGF(usage())); break; case 'M': onlyheader = 1; break; case 'E': onlycpp = 1; break; case 'I': incdir(EARGF(usage())); break; case 'U': newitem(&uflags, EARGF(usage())); break; case 'd': DBGON(); break; case 'w': warnings = 1; break; default: usage(); } ARGEND if (argc > 1) usage(); for (i = 0; i < uflags.n; ++i) undefmacro(uflags.s[i]); infile = (*argv) ? *argv : "<stdin>"; if (!addinput(*argv, NULL, NULL)) { die("error: failed to open input file '%s': %s", *argv, strerror(errno)); } /* * we cannot initialize arch until we have an * output stream, because we maybe want to emit new types */ iarch(); if (onlycpp || onlyheader) { outcpp(); } else { for (next(); yytoken != EOFTOK; decl()) ; } return failure; }