[Buildroot] [PATCH 1/1] httping: new package

[Thomas Petazzoni]

Dear gilles.talis at gmail.com,

Thanks for your contribution! Your package mostly looks good, but I (of
course!) have a few comments. See below.

On Fri, 11 Jan 2013 16:00:46 -0800, gilles.talis at gmail.com wrote:
> diff --git a/package/httping/Config.in b/package/httping/Config.in
> new file mode 100644
> index 0000000..578028f
> --- /dev/null
> +++ b/package/httping/Config.in
> @@ -0,0 +1,24 @@
> +config BR2_PACKAGE_HTTPING
> +	bool "httping"
> +	help
> +	  Httping is like 'ping' but for http-requests.
> +	  Give it an url, and it'll show you how long it takes to connect, 
> +	  send a request and retrieve the reply (only the headers). 
> +	  Be aware that the transmission across the network also takes time! 
> +          So it measures the latency of the webserver + network.

Indentation of this line is not correct: it is composed of spaces only,
while it should be one tab + 2 spaces like the other lines.

> +if BR2_PACKAGE_HTTPING
> +
> +config BR2_PACKAGE_HTTPING_OPENSSL
> +	bool "OpenSSL support"
> +	default y
> +	select BR2_PACKAGE_OPENSSL

Here there is a point that is rather unclear in Buildroot:

 *) Should each package offer a configuration sub-option to enable
    features that depend on other packages (like you did on OpenSSL)

 *) Or should a package automatically enable features if it finds that
    the dependencies are available? This is generally what we do for
    packages having an optional dependency on OpenSSL.

This is to be discussed with other Buildroot developers. Probably we
need to clarify what the rule is, and then document it.

> +config BR2_PACKAGE_HTTPING_TFO
> +	bool "TCP Fast Open (TFO) support"
> +	default n

'default n' is the default, so it's not needed.

> --- /dev/null
> +++ b/package/httping/httping.mk
> @@ -0,0 +1,44 @@
> +#############################################################
> +#
> +# httping
> +#
> +#############################################################
> +HTTPING_VERSION = 1.5.6
> +HTTPING_SOURCE = httping-$(HTTPING_VERSION).tgz
> +HTTPING_SITE = http://www.vanheusden.com/httping
> +HTTPING_LICENSE = GPL

You should be more specific about the version, and whether the "or
later" specifier is here or not. Good choices are: GPLv2, GPLv2+,
GPLv3, GPLv3+.

> +HTTPING_LICENSE_FILES = license.txt
> +
> +ifeq ($(BR2_PACKAGE_HTTPING_OPENSSL),y)
> +HTTPING_DEPENDENCIES = openssl
> +endif
> +
> +
> +ifneq ($(BR2_PACKAGE_HTTPING_OPENSSL),y)
> +     HTTPING_SSL = no
> +endif

This should be slightly changed to something like:

ifeq ($(BR2_PACKAGE_HTTPING_OPENSSL),y)
	HTTPING_DEPENDENCIES += openssl
	HTTPING_SSL = yes
else
	HTTPING_SSL = no
endif

(assuming SSL=yes is correct to enable SSL support)

> +ifeq ($(BR2_PACKAGE_HTTPING_TFO),y)
> +     HTTPING_TFO = yes 
> +endif
> +
> +define HTTPING_BUILD_CMDS
> +     $(MAKE) CC="$(TARGET_CC)" \
> +     SSL=$(HTTPING_SSL) \
> +     DEBUG=no \
> +     TFO=$(HTTPING_TFO) \
> +     LD="$(TARGET_LD)" \
> +     STRIP="$(TARGET_STRIP)" -C $(@D)
> +endef

Here, I would recommend using $(TARGET_CONFIGURE_OPTS) :

	$(MAKE) $(TARGET_CONFIGURE_OPTS) \
		SSL=$(HTTPING_SSL) \
		DEBUG=no \
		TFO=$(HTTPING_TFO) \
		-C $(@D)

> +define HTTPING_INSTALL_TARGET_CMDS
> +     $(INSTALL) -D -m 0755 $(@D)/httping $(TARGET_DIR)/usr/bin
> +endef

With -D, you should give a complete path to the  target binary:

	$(INSTALL) -D -m 0755 $(@D)/httping $(TARGET_DIR)/usr/bin/httping

> +define HTTPING_CLEAN_CMDS
> +     $(MAKE) -C $(@D) clean
> +endef
> +
> +$(eval $(generic-package))
> +
> +# http://www.vanheusden.com/httping/httping-1.5.6.tgz

This comment is not needed.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com