X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fisapipe.h;h=c108e308ad2a094e443350218f5aece97d81ea9c;hb=3c4ad6125cf33faf3cc090b4232d35f3866b9799;hp=187527ac8eb421994cfa05c4fa99c77c18d7ba5b;hpb=f0e088d682de0015abdfacae91576ef7836fd2d8;p=gnulib.git

diff --git a/lib/isapipe.h b/lib/isapipe.h
index 187527ac8..c108e308a 100644
--- a/lib/isapipe.h
+++ b/lib/isapipe.h
@@ -1 +1,6 @@
-int isapipe (int);
+/* Whether pipes are FIFOs; -1 if not known.  */
+#ifndef HAVE_FIFO_PIPES
+# define HAVE_FIFO_PIPES (-1)
+#endif
+
+int isapipe (int fd);