[Qemu-devel] [PATCH 1/3] Check for Linux USBFS in configure

[Cortland Tölva]

In preparation for adding user mode emulation support for the
Linux usbfs interface, check for its kernel header.

Signed-off-by: Cortland Tölva <c...@tolva.net>
---
 configure | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 58862d2ae8..5d36f45442 100755
--- a/configure
+++ b/configure
@@ -4235,7 +4235,23 @@ if compile_prog "" "" ; then
   memfd=yes
 fi
 
-
+# check for usbfs
+have_usbfs=no
+if test "$linux_user" = "yes"; then
+  cat > $TMPC << EOF
+#include <linux/usbdevice_fs.h>
+int main(void) {
+#if !defined(USBDEVFS_URB_TYPE_CONTROL)
+#error Missing usbdevfs defintions.
+#else
+       return 0;
+#endif
+}
+EOF
+  if compile_prog "" "" ; then
+    have_usbfs=yes
+  fi
+fi
 
 # check for fallocate
 fallocate=no
@@ -6346,6 +6362,9 @@ fi
 if test "$memfd" = "yes" ; then
   echo "CONFIG_MEMFD=y" >> $config_host_mak
 fi
+if test "$have_usbfs" = "yes" ; then
+  echo "CONFIG_USBFS=y" >> $config_host_mak
+fi
 if test "$fallocate" = "yes" ; then
   echo "CONFIG_FALLOCATE=y" >> $config_host_mak
 fi
-- 
2.11.0