packages: add tzdata

The time zone database can be used by glibc (and potentially other
applications) to offset UTC time and translate it according to
additional rules, such as zone boundaries and daylight-saving time.

Signed-off-by: Richard Braun <rbraun@sceen.net>
---
 package/Config.in                      |    1 +
 package/tzdata/Config.in               |    8 +++++++
 package/tzdata/tzdata.mk               |   37 ++++++++++++++++++++++++++++++++
 package/zic/zic-fix-dependencies.patch |   25 +++++++++++++++++++++
 package/zic/zic.mk                     |   26 ++++++++++++++++++++++
 5 files changed, 97 insertions(+), 0 deletions(-)
 create mode 100644 package/tzdata/Config.in
 create mode 100644 package/tzdata/tzdata.mk
 create mode 100644 package/zic/zic-fix-dependencies.patch
 create mode 100644 package/zic/zic.mk

Dear Richard Braun,

On Fri,  4 Jan 2013 12:48:44 +0100, Richard Braun wrote:
> The time zone database can be used by glibc (and potentially other
> applications) to offset UTC time and translate it according to
> additional rules, such as zone boundaries and daylight-saving time.
> 
> Signed-off-by: Richard Braun <rbraun@sceen.net>
> ---
>  package/Config.in                      |    1 +
>  package/tzdata/Config.in               |    8 +++++++
>  package/tzdata/tzdata.mk               |   37 ++++++++++++++++++++++++++++++++
>  package/zic/zic-fix-dependencies.patch |   25 +++++++++++++++++++++
>  package/zic/zic.mk                     |   26 ++++++++++++++++++++++

Please split in two patches. One for zic, one for tzdata.

>  5 files changed, 97 insertions(+), 0 deletions(-)
>  create mode 100644 package/tzdata/Config.in
>  create mode 100644 package/tzdata/tzdata.mk
>  create mode 100644 package/zic/zic-fix-dependencies.patch
>  create mode 100644 package/zic/zic.mk
> 
> diff --git a/package/Config.in b/package/Config.in
> index 2cbadf4..99bb724 100644
> --- a/package/Config.in
> +++ b/package/Config.in
> @@ -540,6 +540,7 @@ source "package/protobuf/Config.in"
>  source "package/schifra/Config.in"
>  source "package/startup-notification/Config.in"
>  source "package/liblog4c-localtime/Config.in"
> +source "package/tzdata/Config.in"
>  endmenu
>  
>  menu "Text and terminal handling"
> diff --git a/package/tzdata/Config.in b/package/tzdata/Config.in
> new file mode 100644
> index 0000000..cd4f818
> --- /dev/null
> +++ b/package/tzdata/Config.in
> @@ -0,0 +1,8 @@
> +config BR2_PACKAGE_TZDATA
> +	bool "tzdata"

depends on BR2_TOOLCHAIN_EXTERNAL_GLIBC || BR2_TOOLCHAIN_CTNG_eglibc || BR2_TOOLCHAIN_CTNG_glibc

> +	help
> +	  Time zone database
> +
> +	  http://www.iana.org/time-zones/repository/tz-link.html
> +
> +	  Note that uClibc doesn't support this database.
> diff --git a/package/tzdata/tzdata.mk b/package/tzdata/tzdata.mk
> new file mode 100644
> index 0000000..5995c24
> --- /dev/null
> +++ b/package/tzdata/tzdata.mk
> @@ -0,0 +1,37 @@
> +#############################################################
> +#
> +# tzdata
> +#
> +#############################################################
> +
> +TZDATA_VERSION = 2012j
> +TZDATA_SOURCE = tzdata$(TZDATA_VERSION).tar.gz
> +TZDATA_SITE = http://www.iana.org/time-zones/repository/releases
> +TZDATA_DEPENDENCIES = host-zic
> +TZDATA_LICENSE = Public domain
> +
> +TZDATA_ZIC = $(HOST_DIR)/usr/sbin/zic
> +TZDATA_ZONELIST = africa antarctica asia australasia backward etcetera \
> +			europe factory northamerica pacificnew southamerica

How about making it possible to configure which time zone data gets
installed? From what I remember, the entire size of the tzdata database
was quite large. Could be something like:

choice
	prompt "Time zone selection"

config BR2_PACKAGE_TZDATA_ALL
	bool "all"

config BR2_PACKAGE_TZDATA_LIST
	bool "List"

config BR2_PACKAGE_TZDATA_FILELIST
	bool "List in file"

endchoice

> +define TZDATA_EXTRACT_CMDS
> +	gzip -d -c $(DL_DIR)/$(TZDATA_SOURCE) \
> +		| $(TAR) --strip-components=0 -C $(@D) -xf -
> +endef

A short comment above to explain that the need to override the extract
step is the strip-components=0 would be useful.

> +define TZDATA_BUILD_CMDS
> +	(cd $(@D); \
> +		for zone in $(TZDATA_ZONELIST); do \
> +			$(TZDATA_ZIC) -d _output -y yearistype.sh $$zone; \
> +			$(TZDATA_ZIC) -d _output/posix -y yearistype.sh $$zone; \
> +			$(TZDATA_ZIC) -d _output/right -L leapseconds -y yearistype.sh $$zone; \
> +		done; \
> +	)
> +endef
> +
> +define TZDATA_INSTALL_TARGET_CMDS
> +	mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
> +	cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
> +endef
> +
> +$(eval $(generic-package))
> diff --git a/package/zic/zic-fix-dependencies.patch b/package/zic/zic-fix-dependencies.patch
> new file mode 100644
> index 0000000..e67c5eb
> --- /dev/null
> +++ b/package/zic/zic-fix-dependencies.patch
> @@ -0,0 +1,25 @@
> +From 087046dc38cfa4fa429317cc5db4c9bfaaaedc64 Mon Sep 17 00:00:00 2001
> +From: Richard Braun <rbraun@sceen.net>
> +Date: Fri, 4 Jan 2013 10:57:24 +0100
> +Subject: [PATCH] fix zic dependencies
> +
> +---

A better patch description is needed.

> + Makefile |    2 +-
> + 1 files changed, 1 insertions(+), 1 deletions(-)
> +
> +diff --git a/Makefile b/Makefile
> +index d76a81e..30df7dc 100644
> +--- a/Makefile
> ++++ b/Makefile
> +@@ -349,7 +349,7 @@ version.h:
> + zdump:		$(TZDOBJS)
> + 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
> + 
> +-zic:		$(TZCOBJS) yearistype
> ++zic:		$(TZCOBJS)
> + 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
> + 
> + yearistype:	yearistype.sh
> +-- 
> +1.7.2.5
> +
> diff --git a/package/zic/zic.mk b/package/zic/zic.mk
> new file mode 100644
> index 0000000..d2d5c7d
> --- /dev/null
> +++ b/package/zic/zic.mk
> @@ -0,0 +1,26 @@
> +#############################################################
> +#
> +# zic
> +#
> +#############################################################
> +
> +ZIC_VERSION = 2012j
> +ZIC_SOURCE = tzcode$(ZIC_VERSION).tar.gz
> +ZIC_SITE = http://www.iana.org/time-zones/repository/releases
> +ZIC_LICENSE = Public domain
> +
> +define HOST_ZIC_EXTRACT_CMDS
> +	gzip -d -c $(DL_DIR)/$(ZIC_SOURCE) \
> +		| $(TAR) --strip-components=0 -C $(@D) -xf -
> +endef
> +
> +define HOST_ZIC_BUILD_CMDS
> +	$(HOST_MAKE_ENV) $(MAKE) -C $(@D) zic
> +endef
> +
> +define HOST_ZIC_INSTALL_CMDS
> +	mkdir -p $(HOST_DIR)/usr/sbin
> +	install -D -m 755 $(@D)/zic $(HOST_DIR)/usr/sbin/zic
> +endef
> +
> +$(eval $(host-generic-package))

Thanks!

Thomas

On Fri, Jan 04, 2013 at 12:54:47PM +0100, Thomas Petazzoni wrote:
> Please split in two patches. One for zic, one for tzdata.

OK.

> depends on BR2_TOOLCHAIN_EXTERNAL_GLIBC || BR2_TOOLCHAIN_CTNG_eglibc || BR2_TOOLCHAIN_CTNG_glibc

This would prevent other applications with support for the format from
using it (in other words, although I'm not aware of other such
applications, glibc might not be the only user). The time zone database
itself has no real dependency. Do you still think I should add these,
and change them when needed only ?

> How about making it possible to configure which time zone data gets
> installed? From what I remember, the entire size of the tzdata database
> was quite large. Could be something like:

Indeed.

> > +define TZDATA_EXTRACT_CMDS
> > +	gzip -d -c $(DL_DIR)/$(TZDATA_SOURCE) \
> > +		| $(TAR) --strip-components=0 -C $(@D) -xf -
> > +endef
> 
> A short comment above to explain that the need to override the extract
> step is the strip-components=0 would be useful.

OK.

> > +Subject: [PATCH] fix zic dependencies
> > +
> > +---
> 
> A better patch description is needed.

OK.

I'll resubmit soon. Thanks.

Dear Richard Braun,

On Fri, 4 Jan 2013 13:07:59 +0100, Richard Braun wrote:

> > depends on BR2_TOOLCHAIN_EXTERNAL_GLIBC || BR2_TOOLCHAIN_CTNG_eglibc || BR2_TOOLCHAIN_CTNG_glibc
> 
> This would prevent other applications with support for the format from
> using it (in other words, although I'm not aware of other such
> applications, glibc might not be the only user). The time zone database
> itself has no real dependency. Do you still think I should add these,
> and change them when needed only ?

Hum, good question. Maybe you can keep it as you proposed, but increase
the help text about uClibc, explaining that this is generally mostly
useful with glibc, but kept available for uClibc in case a specific
application makes use of tzdata.

Thomas

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

Hi,

 Thomas> Hum, good question. Maybe you can keep it as you proposed, but increase
 Thomas> the help text about uClibc, explaining that this is generally mostly
 Thomas> useful with glibc, but kept available for uClibc in case a specific
 Thomas> application makes use of tzdata.

I would just keep it glibc-only for now to limit confusion. I've never
heard about any other program using it.