X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=moebius2.git;a=blobdiff_plain;f=common.h;h=cb45e8107b2af322854f67b1065ea70a2ea692b8;hp=88ec865226297a1bcced0312bdd8c91a40febf82;hb=134d36d51a86567bba2a9cfe1b209c4bc7d1a7f0;hpb=512fa4d69efa3f71c61a581c137ee6da2a9bf2f9

diff --git a/common.h b/common.h
index 88ec865..cb45e81 100644
--- a/common.h
+++ b/common.h
@@ -17,6 +17,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <gsl/gsl_vector.h>
 #include <gsl/gsl_matrix.h>