ref: a5f2c1a41746a077bbb34b127e23240d1f38c2b3
dir: /src/cmd/cc/cc1/main.c/
#include <setjmp.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <scc/arg.h> #include <scc/scc.h> #include "cc1.h" char *argv0, *infile; int warnings; jmp_buf recover; 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) { fputs("usage: cc1 [-Ewd] [-D def[=val]]... [-U def]... " "[-I dir]... [-a architecture] [input]\n", stderr); exit(1); } int main(int argc, char *argv[]) { int i; static struct items uflags, dflags, iflags; ARGBEGIN { case 'a': architecture = EARGF(usage()); break; case 'D': newitem(&dflags, EARGF(usage())); break; case 'M': onlyheader = 1; break; case 'E': onlycpp = 1; break; case 'I': newitem(&iflags, 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(); icode(); iarch(); ilex(); icpp(); ibuilts(); for (i = 0; i < iflags.n; ++i) incdir(iflags.s[i]); for (i = 0; i < dflags.n; ++i) defmacro(dflags.s[i]); for (i = 0; i < uflags.n; ++i) undefmacro(uflags.s[i]); infile = (*argv) ? *argv : "<stdin>"; addinput(*argv, NULL, NULL, FAIL); if (onlycpp || onlyheader) { outcpp(); } else { next(); while (yytoken != EOFTOK) decl(); } return failure; }