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Diffstat (limited to 'Build/source/texk/xdvik/m4/xdvi-func-poll.m4')
-rw-r--r--Build/source/texk/xdvik/m4/xdvi-func-poll.m415
1 files changed, 15 insertions, 0 deletions
diff --git a/Build/source/texk/xdvik/m4/xdvi-func-poll.m4 b/Build/source/texk/xdvik/m4/xdvi-func-poll.m4
new file mode 100644
index 00000000000..df70d821428
--- /dev/null
+++ b/Build/source/texk/xdvik/m4/xdvi-func-poll.m4
@@ -0,0 +1,15 @@
+dnl ### Check for poll()
+
+AC_DEFUN([XDVI_FUNC_POLL],
+[AC_CACHE_CHECK([for poll.h and poll()], xdvi_cv_func_poll,
+[AC_TRY_LINK(
+[#include <poll.h>
+], [poll((struct pollfd *) 0, 0, 0);],
+xdvi_cv_func_poll=yes, xdvi_cv_func_poll=no)])
+if test $xdvi_cv_func_poll = yes; then
+ AC_DEFINE([HAVE_POLL], 1, [Define if your system has <poll.h> and poll().])
+else
+ AC_CHECK_HEADERS(sys/select.h select.h)
+fi])
+
+