Signed-off-by: Bryce Harrington <[email protected]>
---
 src/compositor.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/compositor.c b/src/compositor.c
index 0175747..01614f9 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -4189,9 +4189,25 @@ usage(int error_code)
 
                "Core options:\n\n"
                "  --version\t\tPrint weston version\n"
-               "  -B, --backend=MODULE\tBackend module, one of 
drm-backend.so,\n"
-               "\t\t\t\tfbdev-backend.so, x11-backend.so or\n"
-               "\t\t\t\twayland-backend.so\n"
+               "  -B, --backend=MODULE\tBackend module, one of\n"
+#if defined(BUILD_DRM_COMPOSITOR)
+                       "\t\t\t\tdrm-backend.so\n"
+#endif
+#if defined(BUILD_FBDEV_COMPOSITOR)
+                       "\t\t\t\tfbdev-backend.so"
+#endif
+#if defined(BUILD_X11_COMPOSITOR)
+                       "\t\t\t\tx11-backend.so\n"
+#endif
+#if defined(BUILD_WAYLAND_COMPOSITOR)
+                       "\t\t\t\twayland-backend.so\n"
+#endif
+#if defined(BUILD_RDP_COMPOSITOR)
+                       "\t\t\t\trdp-backend.so\n"
+#endif
+#if defined(BUILD_RPI_COMPOSITOR) && defined(HAVE_BCM_HOST)
+                       "\t\t\t\trpi-backend.so\n"
+#endif
                "  --shell=MODULE\tShell module, defaults to desktop-shell.so\n"
                "  -S, --socket=NAME\tName of socket to listen on\n"
                "  -i, --idle-time=SECS\tIdle time in seconds\n"
-- 
1.9.1

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