From: Pekka Paalanen The symbol is needed only for the EGL buffer path. If --disable-egl is given to ./configure, there is no need for it, so fix it to actually not look for that symbol needlessly. This should fix the runtime error: Failed to load module: .../rpi-backend.so: undefined symbol: vc_dispmanx_set_wl_buffer_in_use when you use --disable-egl and do not have a recent enough libraspberrypi package (/opt/vc, a.k.a userland.git) that would provide vc_dispmanx_set_wl_buffer_in_use. Apparently no released version of userland yet provides this. The calls are organized into two helper functions to avoid a boolean argument, and put the #ifdefs away from the main parts of the code. Signed-off-by: Pekka Paalanen Cc: Tomeu Vizoso --- Tomeu, would this be ok with you? --- src/rpi-renderer.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/src/rpi-renderer.c b/src/rpi-renderer.c index 1940db7..2b6d12c 100644 --- a/src/rpi-renderer.c +++ b/src/rpi-renderer.c @@ -385,6 +385,22 @@ rpi_resource_update(struct rpi_resource *resource, struct weston_buffer *buffer, return ret ? -1 : 0; } +static inline void +rpi_buffer_egl_lock(struct weston_buffer *buffer) +{ +#ifdef ENABLE_EGL + vc_dispmanx_set_wl_buffer_in_use(buffer->resource, 1); +#endif +} + +static inline void +rpi_buffer_egl_unlock(struct weston_buffer *buffer) +{ +#ifdef ENABLE_EGL + vc_dispmanx_set_wl_buffer_in_use(buffer->resource, 0); +#endif +} + static void rpir_egl_buffer_destroy(struct rpir_egl_buffer *egl_buffer) { @@ -400,7 +416,7 @@ rpir_egl_buffer_destroy(struct rpir_egl_buffer *egl_buffer) */ vc_dispmanx_resource_delete(egl_buffer->resource_handle); } else { - vc_dispmanx_set_wl_buffer_in_use(buffer->resource, 0); + rpi_buffer_egl_unlock(buffer); weston_buffer_reference(&egl_buffer->buffer_ref, NULL); } @@ -1294,7 +1310,7 @@ rpi_renderer_repaint_output(struct weston_output *base, struct weston_buffer *buffer; buffer = view->surface->egl_front->buffer_ref.buffer; if (buffer != NULL) { - vc_dispmanx_set_wl_buffer_in_use(buffer->resource, 1); + rpi_buffer_egl_lock(buffer); } else { weston_log("warning: client destroyed current front buffer\n"); -- 1.8.1.5