Split the double-inclusion guard. Fixes a problem with #include_next.

[pspp] / lib / sys_select_.h

diff --git a/lib/sys_select_.h b/lib/sys_select_.h
index c1c2a9e12d7916cac27ffd8f86141e03a41afc24..0d575da95d2259d9bf1e3772fbd59c3716e061ef 100644 (file)
--- a/lib/sys_select_.h
+++ b/lib/sys_select_.h
@@ -16,22 +16,26 @@
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 #ifndef _GL_SYS_SELECT_H
-#define _GL_SYS_SELECT_H
 
 #if @HAVE_SYS_SELECT_H@
 
 /* On many platforms, <sys/select.h> assumes prior inclusion of
    <sys/types.h>.  */
-
 # include <sys/types.h>
 
+/* The include_next requires a split double-inclusion guard.  */
 # if @HAVE_INCLUDE_NEXT@
 #  include_next <sys/select.h>
 # else
 #  include @ABSOLUTE_SYS_SELECT_H@
 # endif
 
-#else
+#endif
+
+#ifndef _GL_SYS_SELECT_H
+#define _GL_SYS_SELECT_H
+
+#if !@HAVE_SYS_SELECT_H@
 
 /* A platform that lacks <sys/select.h>.  */
 
@@ -40,3 +44,4 @@
 #endif
 
 #endif /* _GL_SYS_SELECT_H */
+#endif /* _GL_SYS_SELECT_H */