sync code with last improvements from OpenBSD

proto/xorgproto/include/X11/Xosdefs.h

@@ -0,0 +1,116 @@
+/*
+ * O/S-dependent (mis)feature macro definitions
+ *
+Copyright 1991, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ */
+
+#ifndef _XOSDEFS_H_
+# define _XOSDEFS_H_
+
+/*
+ * X_NOT_POSIX means does not have POSIX header files.  Lack of this
+ * symbol does NOT mean that the POSIX environment is the default.
+ * You may still have to define _POSIX_SOURCE to get it.
+ */
+
+
+# ifdef _SCO_DS
+#  ifndef __SCO__
+#   define __SCO__
+#  endif
+# endif
+
+# ifdef __i386__
+#  ifdef SYSV
+#   if !defined(__SCO__) && \
+	!defined(__UNIXWARE__) && !defined(__sun)
+#    if !defined(_POSIX_SOURCE)
+#     define X_NOT_POSIX
+#    endif
+#   endif
+#  endif
+# endif
+
+# ifdef __sun
+/* Imake configs define SVR4 on Solaris, but cc & gcc only define __SVR4
+ * This check allows non-Imake configured programs to build correctly.
+ */
+#  if defined(__SVR4) && !defined(SVR4)
+#   define SVR4 1
+#  endif
+#  ifdef SVR4
+/* define this to whatever it needs to be */
+#   define X_POSIX_C_SOURCE 199300L
+#  endif
+# endif
+
+# ifdef WIN32
+#  ifndef _POSIX_
+#   define X_NOT_POSIX
+#  endif
+# endif
+
+
+# ifdef __APPLE__
+#  define NULL_NOT_ZERO
+
+/* Defining any of these will sanitize the namespace to JUST want is defined by
+ * that particular standard.  If that happens, we don't get some expected
+ * prototypes, typedefs, etc (like fd_mask).  We can define _DARWIN_C_SOURCE to
+ * loosen our belts a tad.
+ */
+#  if defined(_XOPEN_SOURCE) || defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE)
+#   ifndef _DARWIN_C_SOURCE
+#    define _DARWIN_C_SOURCE
+#   endif
+#  endif
+
+# endif
+
+# ifdef __GNU__
+#  ifndef PATH_MAX
+#   define PATH_MAX 4096
+#  endif
+#  ifndef MAXPATHLEN
+#   define MAXPATHLEN 4096
+#  endif
+# endif
+
+# if defined(__SCO__) || defined(__UNIXWARE__)
+#  ifndef PATH_MAX
+#   define PATH_MAX	1024
+#  endif
+#  ifndef MAXPATHLEN
+#   define MAXPATHLEN	1024
+#  endif
+# endif
+
+# if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__) \
+	|| defined(__APPLE__) || defined(__DragonFly__)
+#  ifndef CSRG_BASED
+#   define CSRG_BASED
+#  endif
+# endif
+
+#endif /* _XOSDEFS_H_ */
+