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-rw-r--r--ares/setup.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/ares/setup.h b/ares/setup.h
index 44261411b..c6ec2618e 100644
--- a/ares/setup.h
+++ b/ares/setup.h
@@ -43,10 +43,12 @@
* Include header files for windows builds before redefining anything.
* Use this preproessor block only to include or exclude windows.h,
* winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
- * to any other further and independant block.
+ * to any other further and independant block. Under Cygwin things work
+ * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
+ * never be included when __CYGWIN__ is defined.
*/
-#ifdef HAVE_WINDOWS_H
+#if defined(HAVE_WINDOWS_H) && !defined(__CYGWIN__)
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif