protect against multiple inclusion

include/_tail_cc/assert.h

@@ -5,6 +5,9 @@
 /* $Header$ */
 /*	 A S S E R T I O N    M A C R O   D E F I N I T I O N		*/
 
+#ifndef _ASSERT_H
+#define _ASSERT_H
+
 #ifndef	NDEBUG
 /*	Note: this macro uses parameter substitution inside strings */
 #define	assert(exp)	(exp || (fprintf(stderr,"Assertion \"%s\" failed: file %s, line %d\n", "exp", __FILE__, __LINE__), exit(1)))
@@ -13,3 +16,4 @@
 #define	assert(exp)	(1)
 #define _assert(exp)	(1)
 #endif	NDEBUG
+#endif /* _ASSERT_H */

include/_tail_cc/ctype.h

@@ -3,6 +3,10 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+
+#ifndef _CTYPE_H
+#define _CTYPE_H
+
 /*  File   : ctypes.h
     Author : Richard A. O'Keefe.
     Updated: 26 April 1984
@@ -48,3 +52,4 @@ extern	char	_c2type[];
 #define tocntrl(c)	(((((c)+1)&~96)-1)&127)
 #define	toascii(c)	((c)&127)
 
+#endif /* _CTYPE_H */

include/_tail_cc/math.h

@@ -5,6 +5,9 @@
 
 /* $Header$ */
 
+#ifndef _MATH_H
+#define _MATH_H
+
 /* some constants (Hart & Cheney) */
 
 #define M_PI		 3.14159265358979323846264338327950288
@@ -74,3 +77,5 @@ extern double sinh(), tanh(), cosh();
 
 #define HUGE		M_MAX_D
 #define MAXDOUBLE	M_MAX_D
+
+#endif /* _MATH_H */

include/_tail_cc/setjmp.h

@@ -3,4 +3,10 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+
+#ifndef _SETJMP_H
+#define _SETJMP_H
+
 typedef char jmp_buf[256];
+
+#endif /* _SETJMP_H */

include/_tail_cc/sgtty.h

@@ -5,6 +5,9 @@
  */
 /* Data structures for ioctl/stty/gtty, sufficient for ACK libraries */
 
+#ifndef _SGTTY_H
+#define _SGTTY_H
+
 struct sgttyb {
   char sg_ispeed;		/* input speed (not used) */
   char sg_ospeed;		/* output speed (not used) */
@@ -104,3 +107,5 @@ struct tchars {
 #define B9600   13
 #define EXTA    14
 #define EXTB    15
+
+#endif /* _SGTTY_H */

include/_tail_cc/stdio.h

@@ -3,6 +3,10 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+
+#ifndef _STDIO_H
+#define _STDIO_H
+
 #define BUFSIZ  1024
 #ifdef __vax
 #define _NBF	8
@@ -75,3 +79,5 @@ extern FILE *fopen(), *fdopen(), *freopen(), *popen();
 extern long ftell();
 extern setbuf(), rewind();
 extern char *fgets(), *gets();
+
+#endif /* _STDIO_H */

include/_tail_cc/sys/dir.h

@@ -3,6 +3,9 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+#ifndef _DIR_H
+#define _DIR_H
+
 #ifdef __BSD4_2
 #define MAXNAMLEN 255
 #else
@@ -38,3 +41,5 @@ extern long telldir();
 extern seekdir();
 #define rewinddir(dirp) seekdir((dirp), 0L)
 extern closedir();
+
+#endif /* _DIR_H */

include/_tail_cc/sys/stat.h

@@ -3,6 +3,10 @@
  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
  * See the copyright notice in the ACK home directory, in the file "Copyright".
  */
+
+#ifndef _STAT_H
+#define _STAT_H
+
 struct	stat {
 	dev_t	st_dev;
 	ino_t	st_ino;
@@ -51,3 +55,5 @@ struct	stat {
 #define	S_IREAD		0000400
 #define	S_IWRITE	0000200
 #define	S_IEXEC		0000100
+
+#endif /* _STAT_H */

include/_tail_cc/varargs.h

@@ -4,9 +4,13 @@
  */
 /* $Header$ */
 
+#ifndef _VARARGS_H
+#define _VARARGS_H
+
 typedef char *va_list;
 # define __va_sz(mode)	(((sizeof(mode) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
 # define va_dcl int va_alist;
 # define va_start(list) (list = (char *) &va_alist)
 # define va_end(list)
 # define va_arg(list,mode) (*((mode *)((list += __va_sz(mode)) - __va_sz(mode))))
+#endif /* _VARARGS_H */