[Buildroot] [PATCH] libusb: add an option to compile examples

[Baruch Siach]

Hi Gaël,

On Sun, Jun 10, 2018 at 10:03:16AM -0400, Gaël PORTAY wrote:
> Signed-off-by: Gaël PORTAY <gael.portay at savoirfairelinux.com>
> ---
>  package/libusb/Config.in |  7 +++++++
>  package/libusb/libusb.mk | 11 +++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/package/libusb/Config.in b/package/libusb/Config.in
> index 5238588aa8..d31a717fdf 100644
> --- a/package/libusb/Config.in
> +++ b/package/libusb/Config.in
> @@ -6,5 +6,12 @@ config BR2_PACKAGE_LIBUSB
>  
>  	  http://libusb.info/
>  
> +if BR2_PACKAGE_LIBUSB
> +
> +config BR2_PACKAGE_LIBUSB_EXAMPLES
> +	bool "build libusb examples"
> +
> +endif
> +
>  comment "libusb needs a toolchain w/ threads"
>  	depends on !BR2_TOOLCHAIN_HAS_THREADS
> diff --git a/package/libusb/libusb.mk b/package/libusb/libusb.mk
> index aee3622f8d..89ec91bb42 100644
> --- a/package/libusb/libusb.mk
> +++ b/package/libusb/libusb.mk
> @@ -25,5 +25,16 @@ else
>  LIBUSB_CONF_OPTS += --disable-udev
>  endif
>  
> +ifeq ($(BR2_PACKAGE_LIBUSB_EXAMPLES),y)
> +LIBUSB_CONF_OPTS += --enable-examples-build
> +define LIBUSB_INSTALL_TARGET_EXAMPLES
> +	for example in listdevs xusb fxload hotplugtest testlibusb dpfp dpfp_threaded sam3u_benchmark ; do \
> +		[ -x $(@D)/examples/$${example} ] || continue; \

Why is this file presence check needed?

> +		cp -dpfr $(@D)/examples/$${example} $(TARGET_DIR)/usr/bin; \
> +	done
> +endef
> +LIBUSB_POST_INSTALL_TARGET_HOOKS += LIBUSB_INSTALL_TARGET_EXAMPLES
> +endif
> +
>  $(eval $(autotools-package))
>  $(eval $(host-autotools-package))

baruch

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