Index: src/Makefile.am
===================================================================
--- src/Makefile.am	(revision 9aa9126e40385076b70bce81cfd5925a9c8b56ee)
+++ src/Makefile.am	(revision 7fb92a0bdd3302608869ec4d3ef95c23cd27150e)
@@ -23,4 +23,5 @@
 
 MAINTAINERCLEANFILES =
+MOSTLYCLEANFILES =
 
 # Is there a way to use a variable for the directory names?
Index: src/Makefile.in
===================================================================
--- src/Makefile.in	(revision 9aa9126e40385076b70bce81cfd5925a9c8b56ee)
+++ src/Makefile.in	(revision 7fb92a0bdd3302608869ec4d3ef95c23cd27150e)
@@ -497,6 +497,6 @@
 	Tuples/Explode.cc Validate/HandleAttributes.cc \
 	Virtual/ExpandCasts.cc
-MAINTAINERCLEANFILES = Parser/parser.output ${libdir}/${notdir \
-	${cfa_cpplib_PROGRAMS}}
+MAINTAINERCLEANFILES = ${libdir}/${notdir ${cfa_cpplib_PROGRAMS}}
+MOSTLYCLEANFILES = Parser/parser.hh Parser/parser.output
 BUILT_SOURCES = Parser/parser.hh
 AM_YFLAGS = -d -t -v
@@ -1161,4 +1161,5 @@
 	fi
 mostlyclean-generic:
+	-test -z "$(MOSTLYCLEANFILES)" || rm -f $(MOSTLYCLEANFILES)
 
 clean-generic:
Index: src/Parser/module.mk
===================================================================
--- src/Parser/module.mk	(revision 9aa9126e40385076b70bce81cfd5925a9c8b56ee)
+++ src/Parser/module.mk	(revision 7fb92a0bdd3302608869ec4d3ef95c23cd27150e)
@@ -6,5 +6,5 @@
 ## file "LICENCE" distributed with Cforall.
 ##
-## module.mk -- 
+## module.mk --
 ##
 ## Author           : Peter A. Buhr
@@ -31,3 +31,3 @@
        Parser/parserutility.cc
 
-MAINTAINERCLEANFILES += Parser/parser.output
+MOSTLYCLEANFILES += Parser/parser.hh Parser/parser.output
Index: src/driver/as.cc
===================================================================
--- src/driver/as.cc	(revision 9aa9126e40385076b70bce81cfd5925a9c8b56ee)
+++ 	(revision )
@@ -1,72 +1,0 @@
-// 
-// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
-//
-// The contents of this file are covered under the licence agreement in the
-// file "LICENCE" distributed with Cforall.
-// 
-// as.c -- 
-// 
-// Author           : Peter A. Buhr
-// Created On       : Wed Aug  1 10:49:42 2018
-// Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Aug  2 17:50:09 2018
-// Update Count     : 90
-// 
-
-#include <cstdio>										// perror
-#include <cstdlib>										// exit
-#include <fcntl.h>										// open
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/mman.h>									// mmap
-#include <string.h>
-
-//#define __DEBUG_H__
-
-int main( const int argc, const char * argv[] ) {
-	#ifdef __DEBUG_H__
-	for ( int i = 0; i < argc; i += 1 ) {
-		cerr << argv[i] << endl;
-	} // for
-	#endif // __DEBUG_H__
-
-	int fd = open( argv[argc - 1], O_RDWR );
-	if ( fd < 0 ) { perror( "open" ); exit( EXIT_FAILURE ); };
-
-	struct stat mystat = {};
-	if ( fstat( fd, &mystat ) ) { perror( "fstat" ); exit( EXIT_FAILURE ); };
-	off_t size = mystat.st_size;
-
-	char * start = (char *)mmap( NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0 );
-	if ( start == (void *)-1 ) { perror( "mmap" ); exit( EXIT_FAILURE ); };
-
-	if ( char * cursor = strstr( start, ".Ldebug_info0:" ) ) { // debug information ?
-		// Expand file by one byte to hold 2 character Cforall language code.
-		if ( ftruncate( fd, size + 1 ) ) { perror( "ftruncate" ); exit( EXIT_FAILURE ); };
-
-		for ( int i = 0; i < 8; i += 1 ) {				// move N (magic) lines forward
-			cursor = strstr( cursor, "\n" ) + 1;
-		} // for
-
-		cursor -= 2;									// backup over "c\n" language value
-		if ( *(cursor - 1) != 'x' ) { fprintf( stderr, "invalid C language code\n" ); exit( EXIT_FAILURE ); };
-
-		memmove( cursor + 2, cursor + 1, start + size - cursor - 1 ); // move remaining text 1 character right
-
-		*(cursor) = '2';								// replace C language value with CFA
-		*(cursor + 1) = '5';
-	} // if
-
-	if ( munmap( start, size ) ) { perror( "munmap" ); exit( EXIT_FAILURE ); }; // update on disk
-
-	argv[0] = "as";
-	execvp( argv[0], (char * const *)argv );			// should not return
-	perror( "CFA Translator error: cpp level, execvp" );
-	exit( EXIT_FAILURE );								// tell gcc not to go any further
-} // main
-
-// Local Variables: //
-// tab-width: 4 //
-// mode: c++ //
-// compile-command: "g++ -Wall -Wextra as.c -o as" //
-// End: //