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-rw-r--r--hurd/porting/guidelines.mdwn4
1 files changed, 4 insertions, 0 deletions
diff --git a/hurd/porting/guidelines.mdwn b/hurd/porting/guidelines.mdwn
index 7de9a6f2..03ce9e19 100644
--- a/hurd/porting/guidelines.mdwn
+++ b/hurd/porting/guidelines.mdwn
@@ -306,6 +306,10 @@ Not implemented, not POSIX. Try to disable the feature in the package.
There is no programming interface for the parallel port on GNU/Hurd yet.
+## <a name="cdrom"> <linux/cdrom.h> </a>
+
+Use <sys/cdrom.h> instead.
+
## <a name="baud"> CBAUD </a>
This is not actually standard; cfsetspeed, cfsetispeed, or cfsetospeed should be used instead.