X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=configure.ac;h=75df6c75de7d9e2cd8f9f763dce099f252d388da;hb=ae6e6b3e479b73fae40b0d7181aa0cc96cda3ddc;hp=d9be47dcccf8635e729ecedbca855f72831bebe0;hpb=2047ea5eb436d98d485bed672ed218f9bd708ce6;p=lyx.git

diff --git a/configure.ac b/configure.ac
index d9be47dccc..75df6c75de 100644
--- a/configure.ac
+++ b/configure.ac
@@ -317,6 +317,7 @@ char * strerror(int n);
 #define BOOST_NO_WSTRING 1
 
 #ifdef __CYGWIN__
+#  define _DEFAULT_SOURCE
 #  define NOMINMAX
 #  define BOOST_POSIX 1
 #  define BOOST_POSIX_API 1