Added some code for dependency generator

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
+	botch_free.h debug.h inputtype.h dobits.h line_prefix.h mkdep.h
 
 # Other generated files, for 'make clean' only
 GENERATED = tokenfile.g Lpars.h LLfiles LL.output lint.out \
@@ -172,6 +172,7 @@ 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
@@ -188,7 +189,10 @@ input.o: file_info.h
 input.o: input.h
 input.o: inputtype.h
 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
@@ -205,6 +209,7 @@ 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

@@ -66,3 +66,12 @@
 #define LINE_PREFIX	"#"	/* prefix for generated line directives,
 				   either "#" or "#line"
 				*/
+
+
+!File: mkdep.h
+#undef MKDEP		1	/* if defined, preprocessor only outputs
+				   names of files included (not finished yet)
+				*/
+
+
+

util/cpp/domacro.c

@@ -23,6 +23,7 @@
 #include	"class.h"
 #include	"macro.h"
 #include	"bits.h"
+#include	"mkdep.h"
 
 IMPORT char **inctable;		/* list of include directories		*/
 IMPORT char *getwdir();
@@ -273,9 +274,17 @@ do_include()
 	inctable[0] = WorkingDir;
 	if (filenm) {
 		if (!InsertFile(filenm, &inctable[tok==FILESPECIFIER],&result)){
+#ifndef MKDEP
 			error("cannot find include file \"%s\"", filenm);
+#else
+			warning("cannot find include file \"%s\"", filenm);
+			add_file(filenm);
+#endif
 		}
 		else {
+#ifdef MKDEP
+			add_file(result);
+#endif
 			WorkingDir = getwdir(result);
 			svnestlevel[++nestcount] = nestlevel;
 			FileName = result;

util/cpp/idf.h

@@ -4,13 +4,17 @@
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
 struct id_usr {
+	union {
 		struct macro *idu_macro;
+		struct idf *idu_file;
+	} idu_x;
 	int idu_resmac;
 };
 
 #define IDF_TYPE struct id_usr
 #define IDF_HSIZE 6
-#define id_macro id_user.idu_macro
+#define id_macro id_user.idu_x.idu_macro
+#define id_file id_user.idu_x.idu_file
 #define id_resmac id_user.idu_resmac
 
 #include <idf_pkg.spec>

util/cpp/macro.h

@@ -75,3 +75,4 @@ extern char *std_alloc();
 #define	K_LINE		9
 #define	K_UNDEF		10
 #define K_PRAGMA	11
+#define K_FILE		100	/* for dependency generator */

util/cpp/main.c

@@ -7,13 +7,20 @@
 
 #include <alloc.h>
 #include <em_arith.h>
+#include <assert.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;
 int idfsize = IDFSIZE;
+extern char options[];
 
 arith ifval;
 
@@ -49,6 +56,9 @@ main(argc, argv)
 		do_option(par);
 		argc--, argv++;
 	}
+#ifdef MKDEP
+	options['P'] = 1;
+#endif
 	compile(argc - 1, &argv[1]);
 	exit(err_occurred);
 }
@@ -79,4 +89,34 @@ compile(argc, argv)
 			source ? source : "stdin");
 	if (source) WorkingDir = getwdir(dummy);
 	preprocess(source);
+#ifdef MKDEP
+	list_files();
+#endif
 }
+
+#ifdef MKDEP
+struct idf	*file_head;
+
+list_files()
+{
+	register struct idf *p = file_head;
+
+	while (p) {
+		assert(p->id_resmac == K_FILE);
+		print("%s\n", p->id_text);
+		p = p->id_file;
+	}
+}
+
+add_file(s)
+	char *s;
+{
+	register struct idf *p = str2idf(s, 0);
+
+	if (! p->id_resmac) {
+		p->id_resmac = K_FILE;
+		p->id_file = file_head;
+		file_head = p;
+	}
+}
+#endif

util/cpp/preprocess.c

@@ -14,31 +14,42 @@
 #include "idfsize.h"
 #include "bits.h"
 #include "line_prefix.h"
-
+#include "mkdep.h"
-char _obuf[OBUFSIZE];
 
 #ifdef DOBITS
 char bits[128];
 #endif
 
+#ifndef MKDEP
+char _obuf[OBUFSIZE];
+
 Xflush()
 {
 	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)	(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

util/cpp/replace.c

@@ -78,7 +78,6 @@ replace(idef)
 			struct idf *param;
 			char *nam;
 			extern char *GetIdentifier();
-			extern struct idf *str2idf();
 
 			UnknownIdIsZero = 0;
 			nam = GetIdentifier();