ref: 119f35bc702aded0bd57488c275b54872d290bc3
dir: /sys/src/ape/cmd/make/main.c/
# include "defs.h" /* command make to update programs. Posix Flags: 'e' use environment macros after rather than before makefiles 'f' the next argument is the name of the description file; "makefile" is the default 'i' ignore error codes from the shell 'k' continue to update other targets that don't depend on target if error occurs making a target 'n' don't issue, just print, commands 'p' print out a version of the input graph 'q' don't do anything, but check if object is up to date; returns exit code 0 if up to date, 1 if not 'r' clear the builtin suffix list and don't use built-in rules 's' silent mode--don't print out commands 'S' stop after any command fails (default; opposite of -k) 't' touch (update time of) files but don't issue command Nonposix Flags: 'd' print out debugging comments 'N' use % patterns instead of old suffix rules 'Pn' set process limit to n 'z' always use shell, never issue commands directly */ nameblkp mainname = NULL; nameblkp firstname = NULL; lineblkp sufflist = NULL; struct varblock *firstvar = NULL; struct pattern *firstpat = NULL; struct dirhd *firstod = NULL; wildp firstwild = NULL; wildp lastwild = NULL; nameblkp *hashtab; int nhashed; int hashsize; int hashthresh; int proclimit = PROCLIMIT; int nproc = 0; int proclive = 0; struct process procstack[MAXPROC]; int sigivalue = 0; int sigqvalue = 0; int dbgflag = NO; int prtrflag = NO; int silflag = NO; int noexflag = NO; int keepgoing = NO; int noruleflag = NO; int touchflag = NO; int questflag = NO; int oldflag = YES; int ndocoms = NO; int ignerr = NO; /* default is to stop on error */ int forceshell = NO; int okdel = YES; int envlast = NO; int inarglist = NO; char **envpp = NULL; extern char *dfltmacro[]; extern char *dfltpat[]; extern char *dfltsuff[]; extern char **environ; char **linesptr; char *prompt = ""; int nopdir = 0; char funny[128]; static void loadenv(void); static int isprecious(char *); static int rddescf(char *); static void rdarray(char **); static void printdesc(int); void main(int argc, char **argv) { nameblkp p; int i, j; int descset, nfargs; int nowait = NO; time_t tjunk; char c, *s, *mkflagp; static char makeflags[30] = "-"; static char onechar[2] = "X"; descset = 0; mkflagp = makeflags+1; funny['\0'] = (META | TERMINAL); for(s = "=|^();&<>*?[]:$`'\"\\\n" ; *s ; ++s) funny[*s] |= META; for(s = "\n\t :;&>|" ; *s ; ++s) funny[*s] |= TERMINAL; newhash(HASHSIZE); inarglist = YES; for(i=1; i<argc; ++i) if(argv[i]!=0 && argv[i][0]!='-' && eqsign(argv[i])) argv[i] = 0; setvar("$", "$", NO); inarglist = NO; for(i=1; i<argc; ++i) if(argv[i]!=0 && argv[i][0]=='-') { for(j=1 ; (c=argv[i][j])!='\0' ; ++j) switch(c) { case 'd': ++dbgflag; *mkflagp++ = 'd'; break; case 'e': envlast = YES; *mkflagp++ = 'e'; break; case 'f': if(i >= argc-1) fatal("No description argument after -f flag"); if( ! rddescf(argv[i+1]) ) fatal1("Cannot open %s", argv[i+1]); argv[i+1] = 0; ++descset; break; case 'i': ignerr = YES; *mkflagp++ = 'i'; break; case 'k': keepgoing = YES; *mkflagp++ = 'k'; break; case 'n': noexflag = YES; *mkflagp++ = 'n'; break; case 'N': oldflag = NO; *mkflagp++ = 'N'; break; case 'p': prtrflag = YES; break; case 'P': if(isdigit(argv[i][j+1])) { proclimit = argv[i][++j] - '0'; if(proclimit < 1) proclimit = 1; } else fatal("illegal proclimit parameter"); *mkflagp++ = 'P'; *mkflagp++ = argv[i][j]; break; case 'q': questflag = YES; *mkflagp++ = 'q'; break; case 'r': noruleflag = YES; *mkflagp++ = 'r'; break; case 's': silflag = YES; *mkflagp++ = 's'; break; case 'S': keepgoing = NO; *mkflagp++ = 'S'; break; case 't': touchflag = YES; *mkflagp++ = 't'; break; case 'z': forceshell = YES; *mkflagp++ = 'z'; break; default: onechar[0] = c; /* to make lint happy */ fatal1("Unknown flag argument %s", onechar); } argv[i] = NULL; } if(mkflagp > makeflags+1) setvar("MAKEFLAGS", makeflags, NO); if( !descset ) if( !rddescf("makefile") && !rddescf("Makefile") && (exists(s = "s.makefile") || exists(s = "s.Makefile")) ) { char junk[20]; concat("get ", s, junk); (void) dosys(junk, NO, NO, junk); rddescf(s+2); unlink(s+2); } if(envlast) loadenv(); if(!noruleflag && !oldflag) rdarray(dfltpat); if(prtrflag) printdesc(NO); if( srchname(".IGNORE") ) ignerr = YES; if( srchname(".SILENT") ) silflag = YES; if( srchname(".OLDFLAG") ) oldflag = YES; if( p=srchname(".SUFFIXES") ) sufflist = p->linep; if( !sufflist && !firstwild) fprintf(stderr,"No suffix or %% pattern list.\n"); /* if(sufflist && !oldflag) fprintf(stderr, "Suffix lists are old-fashioned. Use %% patterns\n); */ sigivalue = (int) signal(SIGINT, SIG_IGN); sigqvalue = (int) signal(SIGQUIT, SIG_IGN); enbint(intrupt); nfargs = 0; for(i=1; i<argc; ++i) if(s = argv[i]) { if((p=srchname(s)) == NULL) p = makename(s); ++nfargs; if(i+1<argc && argv[i+1] != 0 && equal(argv[i+1], "&") ) { ++i; nowait = YES; } else nowait = NO; doname(p, 0, &tjunk, nowait); if(dbgflag) printdesc(YES); } /* If no file arguments have been encountered, make the first name encountered that doesn't start with a dot */ if(nfargs == 0) if(mainname == 0) fatal("No arguments or description file"); else { doname(mainname, 0, &tjunk, NO); if(dbgflag) printdesc(YES); } if(!nowait) waitstack(0); exit(0); } void intrupt(int sig) { char *p; if(okdel && !noexflag && !touchflag && (p = varptr("@")->varval) && exists(p)>0 && !isprecious(p) ) { fprintf(stderr, "\n*** %s removed.", p); remove(p); } fprintf(stderr, "\n"); exit(2); } static int isprecious(char *p) { lineblkp lp; depblkp dp; nameblkp np; if(np = srchname(".PRECIOUS")) for(lp = np->linep ; lp ; lp = lp->nxtlineblock) for(dp = lp->depp ; dp ; dp = dp->nxtdepblock) if(equal(p, dp->depname->namep)) return YES; return NO; } void enbint(void (*k)(int)) { if(sigivalue == 0) signal(SIGINT,k); if(sigqvalue == 0) signal(SIGQUIT,k); } static int rddescf(char *descfile) { static int firstrd = YES; /* read and parse description */ if(firstrd) { firstrd = NO; if( !noruleflag ) { rdarray(dfltmacro); if(oldflag) rdarray(dfltsuff); } if(!envlast) loadenv(); } return parse(descfile); } static void rdarray(char **s) { linesptr = s; parse(CHNULL); } static void loadenv(void) { for(envpp = environ ; *envpp ; ++envpp) eqsign(*envpp); envpp = NULL; } static void printdesc(int prntflag) { nameblkp p; depblkp dp; struct varblock *vp; struct dirhd *od; struct shblock *sp; lineblkp lp; if(prntflag) { printf("Open directories:\n"); for (od = firstod; od; od = od->nxtdirhd) printf("\t%s\n", od->dirn); } if(firstvar != 0) printf("Macros:\n"); for(vp = firstvar; vp ; vp = vp->nxtvarblock) printf("\t%s = %s\n" , vp->varname , vp->varval ? vp->varval : "(null)"); for(p = firstname; p; p = p->nxtnameblock) { printf("\n\n%s",p->namep); if(p->linep != 0) printf(":"); if(prntflag) printf(" done=%d",p->done); if(p==mainname) printf(" (MAIN NAME)"); for(lp = p->linep ; lp ; lp = lp->nxtlineblock) { if( dp = lp->depp ) { printf("\n depends on:"); for(; dp ; dp = dp->nxtdepblock) if(dp->depname != 0) printf(" %s ", dp->depname->namep); } if(sp = lp->shp) { printf("\n commands:\n"); for( ; sp ; sp = sp->nxtshblock) printf("\t%s\n", sp->shbp); } } } printf("\n"); fflush(stdout); }