-p N or --strip-path N will strip up to N leading path elements for a

source file's path.

cs-code/Makefile.am

@@ -14,6 +14,7 @@ GZ=.gz
 else
 GZ=
 endif
+STRIP=$(shell echo -n $(srcdir)/ | sed -e 's/[^/]//g' | wc -c)
 
 pkgdata_DATA= menu.dat$(GZ)
 
@@ -24,7 +25,7 @@ menu_src= \
 	servlist.qc string_def.qc stringh_def.qc
 
 menu.dat$(GZ): menu.src $(menu_src)
-	$(QFCC) $(QCFLAGS) $(QCPPFLAGS) -P $<
+	$(QFCC) $(QCFLAGS) $(QCPPFLAGS) -p $(STRIP) -P $<
 	$(GZIP)
 
 EXTRA_DIST= $(menu_src)

tools/qfcc/include/qfcc.h

@@ -571,6 +571,7 @@ ddef_t *new_local (void);
 
 int	CopyString (const char *str);
 int	ReuseString (const char *str);
+const char *strip_path (const char *filename);
 
 typedef struct {
 	qboolean	cow;				// Turn constants into variables if written to
@@ -595,6 +596,8 @@ typedef struct {
 	qboolean		save_temps;		// save temporary files
 	qboolean		files_dat;		// generate files.dat
 	qboolean		traditional;	// behave more like qcc
+	int				strip_path;		// number of leading path elements to strip
+									// from source file names
 } options_t;
 
 extern options_t options;

tools/qfcc/source/qc-lex.l

@@ -138,7 +138,7 @@ m		([\-+]?)
 						while (*p && *p != '\n')	// ignore flags
 							p++;
 						pr_source_line = line - 1;
-						s_file = ReuseString (s);
+						s_file = ReuseString (strip_path (s));
 						free (s);
 					}
 

tools/qfcc/source/qfcc.c

@@ -82,6 +82,7 @@ static struct option const long_options[] = {
 	{"version", no_argument, 0, 'V'},
 	{"files", no_argument, 0, 'F'},
 	{"traditional", no_argument, 0, 't'},
+	{"strip-path", required_argument, 0, 'p'},
 #ifdef USE_CPP
 	{"define", required_argument, 0, 'D'},
 	{"include", required_argument, 0, 'I'},
@@ -813,6 +814,7 @@ DecodeArgs (int argc, char **argv)
 
 	options.save_temps = false;
 	options.verbosity = 0;
+	options.strip_path = 0;
 
 	sourcedir = "";
 	progs_src = "progs.src";
@@ -827,6 +829,7 @@ DecodeArgs (int argc, char **argv)
 										 "W:"	// warning options
 										 "h"	// help
 										 "V"	// version
+										 "p:"	// strip path
 #ifdef USE_CPP
 										 "S"	// save temps
 										 "D:"	// define
@@ -848,6 +851,9 @@ DecodeArgs (int argc, char **argv)
 			case 'P':					// progs-src
 				progs_src = strdup (optarg);
 				break;
+			case 'p':
+				options.strip_path = atoi (optarg);
+				break;
 			case 'F':
 				options.files_dat = true;
 				break;
@@ -1122,6 +1128,22 @@ preprocess_file (const char *filename)
 	return fopen (filename, "rt");
 }
 
+const char *
+strip_path (const char *filename)
+{
+	const char *p = filename;
+	int         i = options.strip_path;
+
+	while (i-- > 0) {
+		while (*p && *p != '/')
+			p++;
+		if (!*p)
+			break;
+		filename = ++p;
+	}
+	return filename;
+}
+
 /*
 	main
 
@@ -1212,7 +1234,7 @@ main (int argc, char **argv)
 
 		yyin = preprocess_file (filename);
 
-		s_file = ReuseString (filename);
+		s_file = ReuseString (strip_path (filename));
 		pr_source_line = 1;
 		clear_frame_macros ();
 		error = yyparse () || pr_error_count;