Drop support for SunOS 4 and Solaris releases older than 2.5 (1995)

Includes changing remaining sun ifdef's to check for standard-conformant /
non-namespace-polluting #ifdef __sun instead of older #ifdef sun.

Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>

Xalloca.h

@@ -88,7 +88,7 @@ from The Open Group.
  * Test is easy, the new one is named __builtin_alloca and comes
  * from alloca.h which #defines alloca.
  */
-#      if defined(sun) || defined(alloca)
+#      if defined(__sun) || defined(alloca)
 /*
  * Some System V boxes extract alloca.o from /lib/libPW.a; if you
  * decide that you don't want to use alloca, you might want to fix it here.

Xarch.h

@@ -39,10 +39,8 @@
 
 # else
 
-#  ifdef SVR4
-#   if !defined(sun)
-#    include <sys/byteorder.h>
-#   endif
+#  if defined(SVR4) || defined(__SVR4)
+#   include <sys/byteorder.h>
 #  elif defined(CSRG_BASED)
 #   if defined(__NetBSD__) || defined(__OpenBSD__)
 #    include <sys/types.h>
@@ -75,7 +73,7 @@
 #   define LITTLE_ENDIAN 1234
 #   define BIG_ENDIAN    4321
 
-#   if defined(sun) && defined(SVR4)
+#   if defined(__sun) && defined(__SVR4)
 #    include <sys/isa_defs.h>
 #    ifdef _LITTLE_ENDIAN
 #     define BYTE_ORDER LITTLE_ENDIAN

Xfuncs.h

@@ -37,53 +37,28 @@ void bcopy();
 void bzero();
 int bcmp();
 #  else
-#   if defined(SYSV) && !defined(__SCO__) && !defined(sun) && !defined(__UNIXWARE__)
+#   if defined(SYSV) && !defined(__SCO__) && !defined(__sun) && !defined(__UNIXWARE__)
 #    include <memory.h>
 void bcopy();
 #    define bzero(b,len) memset(b, 0, len)
 #    define bcmp(b1,b2,len) memcmp(b1, b2, len)
 #   else
 #    include <string.h>
-#    if defined(__SCO__) || defined(sun) || defined(__UNIXWARE__)
+#    if defined(__SCO__) || defined(__sun) || defined(__UNIXWARE__)
 #     include <strings.h>
 #    endif
 #    define _XFUNCS_H_INCLUDED_STRING_H
-#    if defined(sun)
-#     define bcopy(b1,b2,len) memmove(b2, b1, (size_t)(len))
-#     define bzero(b,len) memset(b, 0, (size_t)(len))
-#     define bcmp(b1,b2,len) memcmp(b1, b2, (size_t)(len))
-#    endif
 #   endif
 #  endif /* X_USEBFUNCS */
 
 /* the new Xfuncs.h */
 
-#  if (!defined(sun) || defined(SVR4))
 /* the ANSI C way */
-#   ifndef _XFUNCS_H_INCLUDED_STRING_H
-#    include <string.h>
-#   endif
-#   undef bzero
-#   define bzero(b,len) memset(b,0,len)
-#  else
-#   if defined(SYSV) || defined(sun)
-#    include <memory.h>
-#    define memmove(dst,src,len) bcopy((char *)(src),(char *)(dst),(int)(len))
-#    if defined(SYSV) && defined(_XBCOPYFUNC)
-#     undef memmove
-#     define memmove(dst,src,len) _XBCOPYFUNC((char *)(src),(char *)(dst),(int)(len))
-#     define _XNEEDBCOPYFUNC
-#    endif
-#   else /* else vanilla BSD */
-#    define memmove(dst,src,len) bcopy((char *)(src),(char *)(dst),(int)(len))
-#    define memcpy(dst,src,len) bcopy((char *)(src),(char *)(dst),(int)(len))
-#    define memcmp(b1,b2,len) bcmp((char *)(b1),(char *)(b2),(int)(len))
-#   endif /* SYSV else */
-#  endif
-
-#  if (defined(sun) && !defined(SVR4))
-#   define atexit(f) on_exit(f, 0)
+#  ifndef _XFUNCS_H_INCLUDED_STRING_H
+#   include <string.h>
 #  endif
+#  undef bzero
+#  define bzero(b,len) memset(b,0,len)
 
 #  if defined WIN32 && defined __MINGW32__
 #   define bcopy(b1,b2,len) memmove(b2, b1, (size_t)(len))

Xmd.h

@@ -53,7 +53,7 @@ SOFTWARE.
 /*
  * Special per-machine configuration flags.
  */
-# if defined(sun) && defined(__SVR4)
+# if defined(__sun) && defined(__SVR4)
 #  include <sys/isa_defs.h> /* Solaris: defines _LP64 if necessary */
 # endif
 

Xos.h

@@ -67,12 +67,9 @@ in this Software without prior written authorization from The Open Group.
  */
 
 # include <string.h>
-# if defined(__SCO__) || defined(__UNIXWARE__)
+# if defined(__SCO__) || defined(__UNIXWARE__) || defined(__sun)
 #  include <strings.h>
 # else
-#  if (defined(sun) && defined(__SVR4))
-#   include <strings.h>
-#  endif
 #  ifndef index
 #   define index(s,c) (strchr((s),(c)))
 #  endif
@@ -81,18 +78,6 @@ in this Software without prior written authorization from The Open Group.
 #  endif
 # endif
 
-/*
- * strerror()
- */
-# if (defined(sun) && !defined(SVR4)) && !defined(__GLIBC__)
-#  ifndef strerror
-extern char *sys_errlist[];
-extern int sys_nerr;
-#   define strerror(n) \
-    (((n) >= 0 && (n) < sys_nerr) ? sys_errlist[n] : "unknown error")
-#  endif
-# endif
-
 /*
  * Get open(2) constants
  */
@@ -170,7 +155,7 @@ struct timeval {
 # if defined(_XOPEN_XPG4) || defined(_XOPEN_UNIX) /* _XOPEN_UNIX is XPG4.2 */
 #  define X_GETTIMEOFDAY(t) gettimeofday(t, (struct timezone*)0)
 # else
-#  if defined(SVR4) || defined(WIN32)
+#  if defined(SVR4) || defined(__SVR4) || defined(WIN32)
 #   define X_GETTIMEOFDAY(t) gettimeofday(t)
 #  else
 #   define X_GETTIMEOFDAY(t) gettimeofday(t, (struct timezone*)0)

Xos_r.h

@@ -192,7 +192,7 @@ extern void XtProcessUnlock(
  * uses the older SVR4 thread-safe functions unless the POSIX ones
  * are specifically requested.  Fix the feature test macro.
  */
-#if defined(sun) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && \
+#if defined(__sun) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && \
 	(_POSIX_C_SOURCE - 0 < 199506L) && !defined(_POSIX_PTHREAD_SEMANTICS)
 # undef _POSIX_THREAD_SAFE_FUNCTIONS
 #endif
@@ -915,7 +915,7 @@ typedef struct tm _Xltimeparams;
 # define _XGmtime(t,p)		(gmtime_r((t),&(p)) ? NULL : &(p))
 # define _XLocaltime(t,p)	(localtime_r((t),&(p)) ? NULL : &(p))
 
-#elif !defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(sun)
+#elif !defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(__sun)
 /* Returns NULL on failure.  Solaris 2.5
  *
  * extern char *asctime_r(const struct tm *tm,char *buf, int buflen);
@@ -1038,7 +1038,7 @@ typedef struct {
    (_Xos_processUnlock), \
    (p).pgrp )
 
-#elif !defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(sun) 
+#elif !defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(__sun)
 /* Non-POSIX API.  Solaris.
  *
  * extern struct group *getgrgid_r(gid_t, struct group *, char *, int);

Xosdefs.h

@@ -43,7 +43,7 @@ in this Software without prior written authorization from The Open Group.
 # ifdef __i386__
 #  ifdef SYSV
 #   if !defined(__SCO__) && \
-	!defined(__UNIXWARE__) && !defined(sun)
+	!defined(__UNIXWARE__) && !defined(__sun)
 #    if !defined(_POSIX_SOURCE)
 #     define X_NOT_POSIX
 #    endif
@@ -51,7 +51,7 @@ in this Software without prior written authorization from The Open Group.
 #  endif
 # endif
 
-# ifdef sun
+# ifdef __sun
 /* Imake configs define SVR4 on Solaris, but cc & gcc only define __SVR4
  * This check allows non-Imake configured programs to build correctly.
  */

Xthreads.h

@@ -77,7 +77,7 @@ extern xthread_t (*_x11_thr_self)();
 #   define xthread_yield() thr_yield()
 #   define xthread_exit(v) thr_exit(v)
 #   define xthread_key_create(kp,d) thr_keycreate(kp,d)
-#   ifdef sun
+#   ifdef __sun
 #    define xthread_key_delete(k) 0
 #   else
 #    define xthread_key_delete(k) thr_keydelete(k)