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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 0fa2b3f..dff0c4a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1502,6 +1502,10 @@ case "$host_cpu-$host_vendor-$host_os" in
AC_DEFINE([HAVE_MINGW], [1], [Define if using MinGW])
H5_CPPFLAGS="-D_GNU_SOURCE -D__USE_MINGW_ANSI_STDIO $H5_CPPFLAGS"
;;
+ *cygwin*)
+ AC_DEFINE([HAVE_CYGWIN], [1], [Define if using Cygwin])
+ H5_CPPFLAGS="-D_GNU_SOURCE $H5_CPPFLAGS"
+ ;;
esac
## Need to add the AM_ and H5_ into CFLAGS/CPPFLAGS to make them visible