removed MKDEP; it is now a cpp option (-d)

util/cpp/Makefile

@@ -62,7 +62,7 @@ GSRC =	char.c symbol2str.c
 GHSRC =	errout.h idfsize.h ifdepth.h lapbuf.h \
 	nparams.h numsize.h obufsize.h \
 	parbufsize.h pathlength.h strsize.h textsize.h \
-	botch_free.h debug.h inputtype.h dobits.h line_prefix.h mkdep.h
+	botch_free.h debug.h inputtype.h dobits.h line_prefix.h
 
 # Other generated files, for 'make clean' only
 GENERATED = tokenfile.g Lpars.h LLfiles LL.output lint.out \
@@ -172,7 +172,6 @@ domacro.o: input.h
 domacro.o: inputtype.h
 domacro.o: interface.h
 domacro.o: macro.h
-domacro.o: mkdep.h
 domacro.o: nparams.h
 domacro.o: parbufsize.h
 domacro.o: textsize.h
@@ -192,13 +191,11 @@ main.o: file_info.h
 main.o: idf.h
 main.o: idfsize.h
 main.o: macro.h
-main.o: mkdep.h
 options.o: charoffset.h
 options.o: class.h
 options.o: idf.h
 options.o: idfsize.h
 options.o: macro.h
-options.o: mkdep.h
 preprocess.o: LLlex.h
 preprocess.o: bits.h
 preprocess.o: charoffset.h
@@ -210,7 +207,6 @@ preprocess.o: idfsize.h
 preprocess.o: input.h
 preprocess.o: inputtype.h
 preprocess.o: line_prefix.h
-preprocess.o: mkdep.h
 preprocess.o: obufsize.h
 replace.o: LLlex.h
 replace.o: charoffset.h

util/cpp/Parameters

@@ -68,10 +68,4 @@
 				*/
 
 
-!File: mkdep.h
-#undef MKDEP		1	/* if defined, preprocessor only outputs
-				   names of files included (not finished yet)
-				*/
-
-
 

util/cpp/cpp.6

@@ -30,7 +30,6 @@ as a macro with
 as its replacement text.
 .IP -\fBD\fIname\fR
 the same as -\fBD\fIname\fR=1.
-.IP
 .IP -\fBU\fIname\fR
 .br
 undefine the macro name
@@ -42,9 +41,25 @@ do not generate line directives
 .IP -\fBM\fIn\fR
 set maximum identifier length to
 .IR n .
+.IP -\fBd\fR[\fIfile\fR]
+.br
+if \fIfile\fR is not given, do not preprocess, but instead generate a list
+of makefile dependencies and write them to the standard output.
+If \fIfile\fP is given, generate preprocessor output on standard output,
+and generate the list of makefile dependencies on file \fIfile\fP.
+.IP -\fBxs\fR
+when generating makefile dependencies, do not include files from
+/usr/include.
+.IP -\fBxm\fR
+when generating makefile dependencies, generate them in the following format:
+.RS
+.IP "file.o: file1.h"
+.RE
+.IP ""
+where "file.o" is derived from the source file name. Normally, only a list
+of files included is generated.
 .PP
 The following names are always available unless undefined:
-.RS
 .IP __FILE__
 The input (or #include) file being compiled
 (as a quoted string).
@@ -53,4 +68,3 @@ The line number being compiled.
 .IP __DATE__
 The date and time of compilation as
 a Unix ctime quoted string (the trailing newline is removed).
-.RE

util/cpp/domacro.c

@@ -23,7 +23,6 @@
 #include	"class.h"
 #include	"macro.h"
 #include	"bits.h"
-#include	"mkdep.h"
 
 IMPORT char **inctable;		/* list of include directories		*/
 IMPORT char *getwdir();
@@ -34,6 +33,7 @@ PRIVATE char ifstack[IFDEPTH];	/* if-stack: the content of an entry is	*/
 int nestlevel = -1;
 int svnestlevel[30] = {-1};
 int nestcount;
+extern int do_preprocess;
 
 char *
 GetIdentifier()
@@ -274,17 +274,12 @@ do_include()
 	inctable[0] = WorkingDir;
 	if (filenm) {
 		if (!InsertFile(filenm, &inctable[tok==FILESPECIFIER],&result)){
-#ifndef MKDEP
+			if (do_preprocess) error("cannot find include file \"%s\"", filenm);
-			error("cannot find include file \"%s\"", filenm);
+			else warning("cannot find include file \"%s\"", filenm);
-#else
-			warning("cannot find include file \"%s\"", filenm);
 			add_dependency(filenm);
-#endif
 		}
 		else {
-#ifdef MKDEP
 			add_dependency(result);
-#endif
 			WorkingDir = getwdir(result);
 			svnestlevel[++nestcount] = nestlevel;
 			FileName = result;

util/cpp/main.c

@@ -8,19 +8,20 @@
 #include <alloc.h>
 #include <em_arith.h>
 #include <assert.h>
+#include <system.h>
 #include "file_info.h"
 #include "idfsize.h"
-#include "mkdep.h"
-#ifdef MKDEP
 #include "idf.h"
 #include "macro.h"
-#endif
 
 extern char *symbol2str();
 extern char *getwdir();
 extern int err_occurred;
+extern int do_dependencies;
+extern char *dep_file;
 int idfsize = IDFSIZE;
 extern char options[];
+static File *dep_fd = STDOUT;
 
 arith ifval;
 
@@ -56,9 +57,6 @@ main(argc, argv)
 		do_option(par);
 		argc--, argv++;
 	}
-#ifdef MKDEP
-	options['P'] = 1;
-#endif
 	compile(argc - 1, &argv[1]);
 	exit(err_occurred);
 }
@@ -89,12 +87,9 @@ compile(argc, argv)
 			source ? source : "stdin");
 	if (source) WorkingDir = getwdir(dummy);
 	preprocess(source);
-#ifdef MKDEP
+	if (do_dependencies) list_dependencies(source);
-	list_dependencies(source);
-#endif
 }
 
-#ifdef MKDEP
 struct idf	*file_head;
 extern char *strrindex();
 
@@ -120,6 +115,9 @@ list_dependencies(source)
 		}
 		else source = 0; 
 	}
+	if (dep_file && !sys_open(dep_file, OP_WRITE, &dep_fd)) {
+		fatal("could not open %s", dep_file);
+	}
 	while (p) {
 		assert(p->id_resmac == K_FILE);
 		dependency(p->id_text, source);
@@ -140,12 +138,13 @@ add_dependency(s)
 }
 
 dependency(s, source)
-	char *s;
+	char *s, *source;
 {
 	if (options['s'] && !strncmp(s, "/usr/include/", 13)) {
 		return;
 	}
-	if (options['m'] && source) print("%s: ", source);
+	if (options['m'] && source) {
-	print("%s\n", s);
+		fprint(dep_fd, "%s: %s\n", source, s);
+	}
+	else	fprint(dep_fd, "%s\n", s);
 }
-#endif

util/cpp/options.c

@@ -10,13 +10,15 @@
 #include	"class.h"
 #include	"macro.h"
 #include	"idf.h"
-#include	"mkdep.h"
 
 char options[128];			/* one for every char	*/
 int inc_pos = 1;			/* place where next -I goes */
 int inc_max;
 int inc_total;
+int do_preprocess = 1;
+int do_dependencies = 0;
 char **inctable;
+char *dep_file = 0;
 
 extern int idfsize;
 int txt2int();
@@ -26,20 +28,25 @@ do_option(text)
 {
 	switch(*text++)	{
 	case '-':
-#ifdef MKDEP
 	case 'x':
-#endif
 		options[*text] = 1;
 		break;
 	default:
-#ifndef MKDEP
 		error("illegal option: %c", text[-1]);
-#endif
 		break;
 	case 'C' :	/* comment output		*/
 	case 'P' :	/* run preprocessor stand-alone, without #'s	*/
 		options[*(text-1)] = 1;
 		break;
+	case 'd' :	/* dependency generation */
+		do_dependencies = 1;
+		if (*text) {
+			dep_file = text;
+		}
+		else {
+			do_preprocess = 0;
+		}
+		break;
 	case 'D' :	/* -Dname :	predefine name		*/
 	{
 		register char *cp = text, *name, *mactext;

util/cpp/preprocess.c

@@ -14,42 +14,32 @@
 #include "idfsize.h"
 #include "bits.h"
 #include "line_prefix.h"
-#include "mkdep.h"
 
 #ifdef DOBITS
 char bits[128];
 #endif
 
-#ifndef MKDEP
 char _obuf[OBUFSIZE];
+extern int do_preprocess;
 
 Xflush()
 {
-	sys_write(STDOUT, _obuf, OBUFSIZE);
+	if (do_preprocess) sys_write(STDOUT, _obuf, OBUFSIZE);
 }
-#endif
 
 preprocess(fn)
 	char *fn;
 {
 	register int c;
-#ifndef MKDEP
 	register char *op = _obuf;
 	register char *ob = &_obuf[OBUFSIZE];
-#endif
 	char Xbuf[256];
 	int lineno = 0;
 	extern char options[];
 
-#ifndef MKDEP
+#define flush(X)	(! do_preprocess || sys_write(STDOUT,_obuf,X))
-#define flush(X)	(sys_write(STDOUT,_obuf,X))
 #define echo(ch) 	if (op == ob) { Xflush(); op = _obuf; } *op++ = (ch);
 #define newline()	echo('\n')
-#else
-#define flush(X)
-#define echo(ch)	(ch)
-#define newline()
-#endif
 
 	if (! options['P']) {
 		/* Generate a line directive communicating the