[Buildroot] [PATCH 2/2] package/tzdata: new package

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Richard Braun]

This is the time zone database, used by glibc for translations between
UTC and local time.

Signed-off-by: Richard Braun <rbraun@sceen.net>
---
 package/Config.in        |    1 +
 package/tzdata/Config.in |   24 ++++++++++++++++++++++++
 package/tzdata/tzdata.mk |   44 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+), 0 deletions(-)
 create mode 100644 package/tzdata/Config.in
 create mode 100644 package/tzdata/tzdata.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..d219ae2
--- /dev/null
+++ b/package/tzdata/Config.in
@@ -0,0 +1,24 @@
+config BR2_PACKAGE_TZDATA
+	bool "tzdata"
+	help
+	  Time zone database
+
+	  http://www.iana.org/time-zones/repository/tz-link.html
+
+	  Note that this package is most useful for glibc-based systems, as
+	  uClibc doesn't support the format. Despite this, the time zone
+	  database can also be built on uClibc-based systems in case an
+	  application has specific support for it.
+
+config BR2_PACKAGE_TZDATA_ZONELIST
+	string "Time zone list"
+	depends on BR2_PACKAGE_TZDATA
+	default "default"
+	help
+	  Space-separated list of time zones to compile.
+
+	  The value "default" includes all commonly used time zones. Note
+	  that this set consumes around 5.5M.
+
+	  The full list is the list of files in the time zone database source,
+	  not including the build and .tab files.
diff --git a/package/tzdata/tzdata.mk b/package/tzdata/tzdata.mk
new file mode 100644
index 0000000..5bcee85
--- /dev/null
+++ b/package/tzdata/tzdata.mk
@@ -0,0 +1,44 @@
+#############################################################
+#
+# 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 = $(HOST_DIR)/usr/sbin/zic
+TZDATA_DEFAULT_ZONELIST = africa antarctica asia australasia backward etcetera \
+			europe factory northamerica pacificnew southamerica
+
+ifeq ($(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST)),default)
+TZDATA_ZONELIST = $(TZDATA_DEFAULT_ZONELIST)
+else
+TZDATA_ZONELIST = $(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST))
+endif
+
+# Don't strip any path components during extraction.
+define TZDATA_EXTRACT_CMDS
+	gzip -d -c $(DL_DIR)/$(TZDATA_SOURCE) \
+		| $(TAR) --strip-components=0 -C $(@D) -xf -
+endef
+
+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))
-- 
1.7.2.5

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Thomas Petazzoni]

Dear Richard Braun,

On Fri,  4 Jan 2013 14:06:10 +0100, Richard Braun wrote:

> +		for zone in $(TZDATA_ZONELIST); do \
> +			$(TZDATA_ZIC) -d _output -y yearistype.sh $$zone; \
> +			$(TZDATA_ZIC) -d _output/posix -y yearistype.sh $$zone; \

I am wondering why we are generating the time zone data twice here with
the same argument? I know POSIX says that time zone data shouldn't take
leap seconds into account, so I understand the difference between
_output/posix and _output/right, but not between _output and
_output/posix.

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

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Richard Braun]

On Fri, Jan 04, 2013 at 02:41:19PM +0100, Thomas Petazzoni wrote:
> I am wondering why we are generating the time zone data twice here with
> the same argument? I know POSIX says that time zone data shouldn't take
> leap seconds into account, so I understand the difference between
> _output/posix and _output/right, but not between _output and
> _output/posix.

The posix version is the default one.

-- 
Richard Braun

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Thomas Petazzoni]

Dear Richard Braun,

On Fri, 4 Jan 2013 14:45:20 +0100, Richard Braun wrote:
> On Fri, Jan 04, 2013 at 02:41:19PM +0100, Thomas Petazzoni wrote:
> > I am wondering why we are generating the time zone data twice here with
> > the same argument? I know POSIX says that time zone data shouldn't take
> > leap seconds into account, so I understand the difference between
> > _output/posix and _output/right, but not between _output and
> > _output/posix.
> 
> The posix version is the default one.

Yes, but then why isn't _output/posix a symlink to _output/ ?

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

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Richard Braun]

On Fri, Jan 04, 2013 at 02:48:57PM +0100, Thomas Petazzoni wrote:
> > The posix version is the default one.
> 
> Yes, but then why isn't _output/posix a symlink to _output/ ?

I expected this to be the real question :). A symlink allowing recursive
traversal seems like an easy way to get in trouble.

-- 
Richard Braun

[Buildroot] [pull request] Pull request for branch yem-misc

[Yann E. MORIN]

Hello All!

This series is a based on Richard's tzdata initial series, with some fixes
discussed today during the Developper's Day.

Changes since Richard's post:
  - install POSIX time zones only once
  - path to 'zic' is exported by the 'zic' package

The following changes since commit d3e7fbd75e49e3368b8c361c45344266ceca5cfd:

  heirloom-mailx: needs fork() (2013-02-03 21:37:32 +0100)

are available in the git repository at:
  git://gitorious.org/buildroot/buildroot.git yem-misc

Richard Braun (2):
      package/zic: new host package
      package/tzdata: new package

 package/Config.in                      |    1 +
 package/tzdata/Config.in               |   20 ++++++++++++++
 package/tzdata/tzdata.mk               |   46 ++++++++++++++++++++++++++++++++
 package/zic/zic-fix-dependencies.patch |   27 ++++++++++++++++++
 package/zic/zic.mk                     |   29 ++++++++++++++++++++
 5 files changed, 123 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

Regards,
Yann E. MORIN

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 1/2] package/zic: new host package

[Yann E. MORIN]

From: Richard Braun <rbraun@sceen.net>

This is the zone information compiler, used to compile the time zone
database.

Signed-off-by: Richard Braun <rbraun@sceen.net>
[yann.morin.1998 at free.fr: export ZIC for all to use]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
---
 package/zic/zic-fix-dependencies.patch |   27 +++++++++++++++++++++++++++
 package/zic/zic.mk                     |   29 +++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 0 deletions(-)
 create mode 100644 package/zic/zic-fix-dependencies.patch
 create mode 100644 package/zic/zic.mk

diff --git a/package/zic/zic-fix-dependencies.patch b/package/zic/zic-fix-dependencies.patch
new file mode 100644
index 0000000..e1cbc12
--- /dev/null
+++ b/package/zic/zic-fix-dependencies.patch
@@ -0,0 +1,27 @@
+From 4a2a55a640dd9316dac5f31832064f28f59ab0ae Mon Sep 17 00:00:00 2001
+From: Richard Braun <rbraun@sceen.net>
+Date: Fri, 4 Jan 2013 10:57:24 +0100
+Subject: [PATCH] zic: fix dependencies
+
+The yearistype script is provided by the tzdata package, and is required
+at runtime only.
+---
+ 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) $(LDLIBS)
+ 
+ yearistype:	yearistype.sh
+-- 
+1.7.2.5
+
diff --git a/package/zic/zic.mk b/package/zic/zic.mk
new file mode 100644
index 0000000..3dec6af
--- /dev/null
+++ b/package/zic/zic.mk
@@ -0,0 +1,29 @@
+#############################################################
+#
+# zic
+#
+#############################################################
+
+ZIC_VERSION = 2012j
+ZIC_SOURCE = tzcode$(ZIC_VERSION).tar.gz
+ZIC_SITE = http://www.iana.org/time-zones/repository/releases
+ZIC_LICENSE = Public domain
+
+# Don't strip any path components during extraction.
+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))
+
+ZIC = $(HOST_DIR)/usr/sbin/zic
-- 
1.7.2.5

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Yann E. MORIN]

From: Richard Braun <rbraun@sceen.net>

This is the time zone database, used by glibc for translations between
UTC and local time.

Signed-off-by: Richard Braun <rbraun@sceen.net>
[yann.morin.1998 at free.fr: use global ZIC, install posix TZ only once]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
---
 package/Config.in        |    1 +
 package/tzdata/Config.in |   20 ++++++++++++++++++++
 package/tzdata/tzdata.mk |   46 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 0 deletions(-)
 create mode 100644 package/tzdata/Config.in
 create mode 100644 package/tzdata/tzdata.mk

diff --git a/package/Config.in b/package/Config.in
index 2f219b6..090216e 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -566,6 +566,7 @@ 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..4e68a97
--- /dev/null
+++ b/package/tzdata/Config.in
@@ -0,0 +1,20 @@
+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
+
+config BR2_PACKAGE_TZDATA_ZONELIST
+	string "Time zone list"
+	depends on BR2_PACKAGE_TZDATA
+	default "default"
+	help
+	  Space-separated list of time zones to compile.
+
+	  The value "default" includes all commonly used time zones. Note
+	  that this set consumes around 5.5M.
+
+	  The full list is the list of files in the time zone database source,
+	  not including the build and .tab files.
diff --git a/package/tzdata/tzdata.mk b/package/tzdata/tzdata.mk
new file mode 100644
index 0000000..f74898f
--- /dev/null
+++ b/package/tzdata/tzdata.mk
@@ -0,0 +1,46 @@
+#############################################################
+#
+# tzdata
+#
+#############################################################
+
+TZDATA_VERSION = 2012j
+TZDATA_SOURCE = tzdata$(TZDATA_VERSION).tar.gz
+TZDATA_SITE = http://www.iana.org/time-zones/repository/releases
+TZDATA_DEPENDENCIES = host-zic
+TZDATA_LICENSE = Public domain
+
+TZDATA_DEFAULT_ZONELIST = africa antarctica asia australasia backward etcetera \
+			europe factory northamerica pacificnew southamerica
+
+ifeq ($(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST)),default)
+TZDATA_ZONELIST = $(TZDATA_DEFAULT_ZONELIST)
+else
+TZDATA_ZONELIST = $(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST))
+endif
+
+# Don't strip any path components during extraction.
+define TZDATA_EXTRACT_CMDS
+	gzip -d -c $(DL_DIR)/$(TZDATA_SOURCE) \
+		| $(TAR) --strip-components=0 -C $(@D) -xf -
+endef
+
+define TZDATA_BUILD_CMDS
+	(cd $(@D); \
+		for zone in $(TZDATA_ZONELIST); do \
+			$(ZIC) -d _output/posix -y yearistype.sh $$zone; \
+			$(ZIC) -d _output/right -L leapseconds -y yearistype.sh $$zone; \
+		done; \
+	)
+endef
+
+define TZDATA_INSTALL_TARGET_CMDS
+	mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
+	cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
+	cd $(TARGET_DIR)/usr/share/zoneinfo;    \
+	for zone in posix/*; do                 \
+	    ln -s "$${zone}" "$${zone##*/}";    \
+	done
+endef
+
+$(eval $(generic-package))
-- 
1.7.2.5

[Buildroot] [pull request] Pull request for branch yem-misc

[Yann E. MORIN]

Peter, All,

On Monday 04 February 2013 Yann E. MORIN wrote:
> This series is a based on Richard's tzdata initial series, with some fixes
> discussed today during the Developper's Day.
> 
> Changes since Richard's post:
>   - install POSIX time zones only once
>   - path to 'zic' is exported by the 'zic' package
> 
> The following changes since commit d3e7fbd75e49e3368b8c361c45344266ceca5cfd:
> 
>   heirloom-mailx: needs fork() (2013-02-03 21:37:32 +0100)
> 
> are available in the git repository at:
>   git://gitorious.org/buildroot/buildroot.git yem-misc
> 
> Richard Braun (2):
>       package/zic: new host package
>       package/tzdata: new package

Ping? This is material for the 'next' branch, of course! ;-)

Not re-spinning this series, since it has not changed.
It's still in the patchwork.

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Danomi Manchego]

+define TZDATA_INSTALL_TARGET_CMDS
+       mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
+       cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
+       cd $(TARGET_DIR)/usr/share/zoneinfo;    \
+       for zone in posix/*; do                 \
+           ln -s "$${zone}" "$${zone##*/}";    \
+       done
+endef

Yann,

Today, a co-worker applied these patches, and ran into a small problem
during the install phase.  He had made a mistake while applying the
companion zic patch, which caused the tzdata package to stop.  Then,
after he fixed his mistake, the tzdata failed to install, because the
'ln -s' failed to overwrite symlinks that already exist.  So I think
that it might be good to add an 'rm -f "$${zone##*/}";' before the 'ln
-s'.  (Or at least make it an 'ln -sf', though I personally am
distrustful of 'ln -sf' due to sometimes unexpected behavior when the
target of the symlink is a directory.)

Danomi -

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Richard Braun]

On Mon, Feb 25, 2013 at 09:02:50PM -0500, Danomi Manchego wrote:
> +define TZDATA_INSTALL_TARGET_CMDS
> +       mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
> +       cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
> +       cd $(TARGET_DIR)/usr/share/zoneinfo;    \
> +       for zone in posix/*; do                 \
> +           ln -s "$${zone}" "$${zone##*/}";    \
> +       done
> +endef
> 
> Yann,
> 
> Today, a co-worker applied these patches, and ran into a small problem
> during the install phase.  He had made a mistake while applying the
> companion zic patch, which caused the tzdata package to stop.  Then,
> after he fixed his mistake, the tzdata failed to install, because the
> 'ln -s' failed to overwrite symlinks that already exist.  So I think
> that it might be good to add an 'rm -f "$${zone##*/}";' before the 'ln
> -s'.  (Or at least make it an 'ln -sf', though I personally am
> distrustful of 'ln -sf' due to sometimes unexpected behavior when the
> target of the symlink is a directory.)

This is best fixed with ln -sfn. Sorry for not doing it in the first
place.

-- 
Richard Braun

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Yann E. MORIN]

Danomi, Richard, All,

On Tuesday 26 February 2013 Danomi Manchego wrote:
> +define TZDATA_INSTALL_TARGET_CMDS
> +       mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
> +       cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
> +       cd $(TARGET_DIR)/usr/share/zoneinfo;    \
> +       for zone in posix/*; do                 \
> +           ln -s "$${zone}" "$${zone##*/}";    \
> +       done
> +endef
> 
> Yann,
> 
> Today, a co-worker applied these patches, and ran into a small problem
> during the install phase.  He had made a mistake while applying the
> companion zic patch, which caused the tzdata package to stop.  Then,
> after he fixed his mistake, the tzdata failed to install, because the
> 'ln -s' failed to overwrite symlinks that already exist.  So I think
> that it might be good to add an 'rm -f "$${zone##*/}";' before the 'ln
> -s'.  (Or at least make it an 'ln -sf', though I personally am
> distrustful of 'ln -sf' due to sometimes unexpected behavior when the
> target of the symlink is a directory.)

OK, I'll apply Richard's "ln -sfn" fix, and re-submit.
Thank you both for the feedback!

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

[Buildroot] [PATCH 2/2] package/tzdata: new package

[Yann E. MORIN]

From: Richard Braun <rbraun@sceen.net>

This is the time zone database, used by glibc for translations between
UTC and local time.

Signed-off-by: Richard Braun <rbraun@sceen.net>
[yann.morin.1998 at free.fr: use global ZIC, install posix TZ only once]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Danomi Manchego <danomimanchego123@gmail.com>
---
 package/Config.in        |    1 +
 package/tzdata/Config.in |   20 ++++++++++++++++++++
 package/tzdata/tzdata.mk |   46 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 0 deletions(-)
 create mode 100644 package/tzdata/Config.in
 create mode 100644 package/tzdata/tzdata.mk

diff --git a/package/Config.in b/package/Config.in
index 22e64f8..f0c8960 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -569,6 +569,7 @@ 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..4e68a97
--- /dev/null
+++ b/package/tzdata/Config.in
@@ -0,0 +1,20 @@
+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
+
+config BR2_PACKAGE_TZDATA_ZONELIST
+	string "Time zone list"
+	depends on BR2_PACKAGE_TZDATA
+	default "default"
+	help
+	  Space-separated list of time zones to compile.
+
+	  The value "default" includes all commonly used time zones. Note
+	  that this set consumes around 5.5M.
+
+	  The full list is the list of files in the time zone database source,
+	  not including the build and .tab files.
diff --git a/package/tzdata/tzdata.mk b/package/tzdata/tzdata.mk
new file mode 100644
index 0000000..04d9b27
--- /dev/null
+++ b/package/tzdata/tzdata.mk
@@ -0,0 +1,46 @@
+#############################################################
+#
+# tzdata
+#
+#############################################################
+
+TZDATA_VERSION = 2012j
+TZDATA_SOURCE = tzdata$(TZDATA_VERSION).tar.gz
+TZDATA_SITE = http://www.iana.org/time-zones/repository/releases
+TZDATA_DEPENDENCIES = host-zic
+TZDATA_LICENSE = Public domain
+
+TZDATA_DEFAULT_ZONELIST = africa antarctica asia australasia backward etcetera \
+			europe factory northamerica pacificnew southamerica
+
+ifeq ($(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST)),default)
+TZDATA_ZONELIST = $(TZDATA_DEFAULT_ZONELIST)
+else
+TZDATA_ZONELIST = $(call qstrip,$(BR2_PACKAGE_TZDATA_ZONELIST))
+endif
+
+# Don't strip any path components during extraction.
+define TZDATA_EXTRACT_CMDS
+	gzip -d -c $(DL_DIR)/$(TZDATA_SOURCE) \
+		| $(TAR) --strip-components=0 -C $(@D) -xf -
+endef
+
+define TZDATA_BUILD_CMDS
+	(cd $(@D); \
+		for zone in $(TZDATA_ZONELIST); do \
+			$(ZIC) -d _output/posix -y yearistype.sh $$zone; \
+			$(ZIC) -d _output/right -L leapseconds -y yearistype.sh $$zone; \
+		done; \
+	)
+endef
+
+define TZDATA_INSTALL_TARGET_CMDS
+	mkdir -p $(TARGET_DIR)/usr/share/zoneinfo
+	cp -a $(@D)/_output/* $(TARGET_DIR)/usr/share/zoneinfo
+	cd $(TARGET_DIR)/usr/share/zoneinfo;    \
+	for zone in posix/*; do                 \
+	    ln -sfn "$${zone}" "$${zone##*/}";    \
+	done
+endef
+
+$(eval $(generic-package))
-- 
1.7.2.5