[Buildroot] add dhcpcd package

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear John Stile,

On Fri, 08 Mar 2013 01:08:16 -0800, John Stile wrote:
> dhcpcd: new package

This line should be the title of the e-mail, as it will become the
title of the patch once applied. Please use 'git send-email' to send
your patches, it will make sure that everything is done properly, and
will save you a lot of issues.

> Dhcpcd is an RFC2131 compliant DHCP client.
> 
> Signed-off-by: John Stile <john@stilen.com>
> ---
>  package/Config.in        |  1 +
>  package/dhcpcd/Config.in |  5 +++++
>  package/dhcpcd/dhcpcd.mk | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 54 insertions(+)
>  create mode 100644 package/dhcpcd/Config.in
>  create mode 100644 package/dhcpcd/dhcpcd.mk
> 
> diff --git a/package/Config.in b/package/Config.in
> index 22e64f8..924b464 100644
> --- a/package/Config.in
> +++ b/package/Config.in
> @@ -633,6 +633,7 @@ source "package/cups/Config.in"
>  if BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
>  source "package/dhcp/Config.in"
>  endif
> +source "package/dhcpcd/Config.in"
>  source "package/dhcpdump/Config.in"
>  source "package/dnsmasq/Config.in"
>  source "package/dropbear/Config.in"
> diff --git a/package/dhcpcd/Config.in b/package/dhcpcd/Config.in
> new file mode 100644
> index 0000000..3855c6a
> --- /dev/null
> +++ b/package/dhcpcd/Config.in
> @@ -0,0 +1,5 @@
> +config BR2_PACKAGE_DHCPCD
> +	bool "dhcpcd"
> +	help
> +	  An RFC2131 compliant DHCP client
> +	  NOTE: If uClibc, depends on  UCLIBC_SUPPORT_AI_ADDRCONFIG=y

As Gilles said, this note is useless, since AI_ADDRCONFIG is enabled by
default.

Also, after this help text, leave one blank line, and add the upstream
URL of the project. See all other Config.in files for packages in
Buildroot's tree. See also
http://buildroot.org/downloads/manual/manual.html#_literal_config_in_literal_file

> diff --git a/package/dhcpcd/dhcpcd.mk b/package/dhcpcd/dhcpcd.mk
> new file mode 100644
> index 0000000..c7aa82e
> --- /dev/null
> +++ b/package/dhcpcd/dhcpcd.mk
> @@ -0,0 +1,48 @@
> +#############################################################
> +#
> +# dhcpcd
> +#
> +#############################################################
> +
> +DHCPCD_VERSION = 5.6.7
> +DHCPCD_SOURCE = dhcpcd-$(DHCPCD_VERSION).tar.bz2
> +DHCPCD_SITE = http://roy.marples.name/downloads/dhcpcd/
> +DHCPCD_LICENSE = BSD-2c
> +
> +ifeq ($(BR2_USE_MMU),n)

I already told you this would have no effect. BR2_USE_MMU is either 'y'
or empty. So it should be:

ifeq ($(BR2_USE_MMU),)

> +	DHCPCD_CONFIG_OPT += --disable-fork
> +endif 
> +
> +ifeq ($(BR2_INET_IPV6),)
> +	DHCPCD_CFLAGS += -UHASIPv6
> +endif

I grepped through the entire dhcpcd source tree, and I haven't seen
this HASIPv6 thing mentioned anywhere. Where did you get this from?

> +
> +define DHCPCD_CONFIGURE_CMDS
> +	(cd $(@D); \
> +	./configure \
> +	--target=$(BR2_GCC_TARGET_ARCH) \
> +	--os=linux \
> +	$(DHCPCD_CONFIG_OPT) )

We usually indent the subsequent lines with one more tab:

	(cd $(@D); \
		./configure \
		--target=$(BR2_GCC_TARGET_ARCH) \
		--os=linux \
		$(DHCPCD_CONFIG_OPT))

> +endef
> +
> +define DHCPCD_BUILD_CMDS
> +	$(MAKE) \
> +	$(TARGET_CONFIGURE_OPTS) \
> +	$(DHCPCD_CFLAGS) \
> +	-C $(@D) all

Ditto here.

Also, as Gilles noted, if DHPCD_FLAGS expands to -UHASIPv6, then your
build will break: -UHASIPv6 is not a valid option for make.

> +define DHCPCD_INSTALL_TARGET_CMDS
> +	$(INSTALL) -D -m 0755 $(@D)/dhcpcd \
> +	$(TARGET_DIR)/usr/bin/dhcpcd

Intend the subsequent line with one tab.

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

> +	$(INSTALL) -D -m 0644 $(@D)/dhcpcd.conf \
> +	$(TARGET_DIR)/etc/dhcpcd.conf
> +	$(INSTALL) -D -m 0755 $(@D)/dhcpcd-run-hooks \
> +	$(TARGET_DIR)/libexec/dhcpcd-run-hooks
> +endef
> +
> +# NOTE: Even though this package has a configure script, it is not generated
> +# using the autotools, so we have to use the generic package infrastructure.
> +
> +$(eval $(call generic-package))
> +

Thanks,

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