ref: 42ec5a0729a73a383203ba969be07fc0b2ee8ecd
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);
}