X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=configure.ac;h=055833a7fb5aa30d1f5d890aff1bcf065685a1f8;hb=8e281b76ea26f5da79875ad927c4660fb7b1502b;hp=47a167e282e44baba8d78e21daa1c7acaba2b345;hpb=1718e733d607914b29631c2dacf817911c84c76c;p=openocd.git

diff --git a/configure.ac b/configure.ac
index 47a167e282..055833a7fb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -669,7 +669,11 @@ for hidapi_lib in hidapi hidapi-hidraw hidapi-libusb; do
 	])
 done
 
-PKG_CHECK_MODULES([LIBFTDI], [libftdi1], [use_libftdi=yes], [
+PKG_CHECK_MODULES([LIBFTDI], [libftdi1], [
+	use_libftdi=yes
+	PKG_CHECK_EXISTS([libftdi1 >= 1.5],
+		[AC_DEFINE([HAVE_LIBFTDI_TCIOFLUSH], [1], [Define if your libftdi has ftdi_tcioflush()])])
+  ], [
 	PKG_CHECK_MODULES([LIBFTDI], [libftdi], [use_libftdi=yes], [use_libftdi=no])
 ])