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-rw-r--r--Build/source/texk/xdvik/m4/xdvi-sys-streams.m416
1 files changed, 16 insertions, 0 deletions
diff --git a/Build/source/texk/xdvik/m4/xdvi-sys-streams.m4 b/Build/source/texk/xdvik/m4/xdvi-sys-streams.m4
new file mode 100644
index 00000000000..2548c5d96c4
--- /dev/null
+++ b/Build/source/texk/xdvik/m4/xdvi-sys-streams.m4
@@ -0,0 +1,16 @@
+dnl ### Check for at-least-pretend Streams capability
+
+AC_DEFUN([XDVI_SYS_STREAMS],
+[AC_CACHE_CHECK([for stropts.h and isastream()], xdvi_cv_sys_streams,
+[AC_TRY_LINK(
+[#include <stropts.h>
+], [#ifndef I_SETSIG
+choke me
+#else
+isastream(0);
+#endif], xdvi_cv_sys_streams=yes, xdvi_cv_sys_streams=no)])
+if test $xdvi_cv_sys_streams = yes; then
+ AC_DEFINE([HAVE_STREAMS], 1, [Define if your system has STREAMS (and if X uses it).])
+fi])
+
+