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* [Buildroot] [PATCH v2 0/1] Add support for teamd/libteam
@ 2021-07-15  8:34 Joachim Wiberg
  2021-07-15  8:34 ` [Buildroot] [PATCH v2 1/1] package/libteam: new package Joachim Wiberg
  0 siblings, 1 reply; 4+ messages in thread
From: Joachim Wiberg @ 2021-07-15  8:34 UTC (permalink / raw)
  To: buildroot

Hi!

This patch adds support for teamd/libteam to Buildroot.  A few musl libc
related patches have been backported from project's master branch at

    https://github.com/jpirko/libteam/

Basic tests pass:

    $ ./utils/check-package package/libteam/*
    187 lines processed
    0 warnings generated

    $ ./utils/test-pkg -c libteam.config -p libteam
                        bootlin-armv5-uclibc [1/6]: OK
                         bootlin-armv7-glibc [2/6]: OK
                       bootlin-armv7m-uclibc [3/6]: SKIPPED
                         bootlin-x86-64-musl [4/6]: OK
                          br-arm-full-static [5/6]: OK
                                sourcery-arm [6/6]: OK
    6 builds, 1 skipped, 0 build failed, 0 legal-info failed


Best regards
 /Joachim

Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

---
v2: added missing libnl deps in libteam/Config.in (Yegor)

Joachim Wiberg (1):
  package/libteam: new package

 DEVELOPERS                                    |  1 +
 package/Config.in                             |  1 +
 .../0001-revert-disregard-current-state.patch | 51 +++++++++++++++++++
 .../0002-fix-build-on-openwrt-musl-libc.patch | 41 +++++++++++++++
 ...3-increase-wait-time-for-daemon-kill.patch | 37 ++++++++++++++
 package/libteam/Config.in                     | 26 ++++++++++
 package/libteam/libteam.hash                  |  3 ++
 package/libteam/libteam.mk                    | 22 ++++++++
 8 files changed, 182 insertions(+)
 create mode 100644 package/libteam/0001-revert-disregard-current-state.patch
 create mode 100644 package/libteam/0002-fix-build-on-openwrt-musl-libc.patch
 create mode 100644 package/libteam/0003-increase-wait-time-for-daemon-kill.patch
 create mode 100644 package/libteam/Config.in
 create mode 100644 package/libteam/libteam.hash
 create mode 100644 package/libteam/libteam.mk

-- 
2.25.1

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Buildroot] [PATCH v2 1/1] package/libteam: new package
  2021-07-15  8:34 [Buildroot] [PATCH v2 0/1] Add support for teamd/libteam Joachim Wiberg
@ 2021-07-15  8:34 ` Joachim Wiberg
  2021-07-17 17:04   ` Yann E. MORIN
  0 siblings, 1 reply; 4+ messages in thread
From: Joachim Wiberg @ 2021-07-15  8:34 UTC (permalink / raw)
  To: buildroot

This package is the userspace daemon, client tool, and library for the
team device implementation in the Linux kernel.  Team is an alternative
to the traditional bonding driver and provides more "runners", or modes,
of operation for aggregates.

Team devices require the following kernel config, the most common modes
have been included to be enabled when this package is selected:

    CONFIG_NET_TEAM=y
    CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=y
    CONFIG_NET_TEAM_MODE_LOADBALANCE=y

Other possible, but not enabled, modes are:

    CONFIG_NET_TEAM_MODE_BROADCAST=y
    CONFIG_NET_TEAM_MODE_ROUNDROBIN=y
    CONFIG_NET_TEAM_MODE_RANDOM=y

Backported the three most relevant patches to fix musl build, revert of
a fix prior to 1.31 that can cause high CPU load, and a fix to prevent
failing to stop the daemon due to too short timeout for kill command.

Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
---
 DEVELOPERS                                    |  1 +
 package/Config.in                             |  1 +
 .../0001-revert-disregard-current-state.patch | 51 +++++++++++++++++++
 .../0002-fix-build-on-openwrt-musl-libc.patch | 41 +++++++++++++++
 ...3-increase-wait-time-for-daemon-kill.patch | 37 ++++++++++++++
 package/libteam/Config.in                     | 26 ++++++++++
 package/libteam/libteam.hash                  |  3 ++
 package/libteam/libteam.mk                    | 22 ++++++++
 8 files changed, 182 insertions(+)
 create mode 100644 package/libteam/0001-revert-disregard-current-state.patch
 create mode 100644 package/libteam/0002-fix-build-on-openwrt-musl-libc.patch
 create mode 100644 package/libteam/0003-increase-wait-time-for-daemon-kill.patch
 create mode 100644 package/libteam/Config.in
 create mode 100644 package/libteam/libteam.hash
 create mode 100644 package/libteam/libteam.mk

diff --git a/DEVELOPERS b/DEVELOPERS
index 2a69f88299..e46362b6ee 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1316,6 +1316,7 @@ F:	package/rtty/
 N:	Joachim Wiberg <troglobit@gmail.com>
 F:	configs/globalscale_espressobin_defconfig
 F:	board/globalscale/espressobin/
+F:	package/libteam/
 F:	package/mg/
 F:	package/netcalc/
 F:	package/ssdp-responder/
diff --git a/package/Config.in b/package/Config.in
index e883cf3780..f55d9f4cc2 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -1809,6 +1809,7 @@ menu "Networking"
 	source "package/libsoup/Config.in"
 	source "package/libsrtp/Config.in"
 	source "package/libstrophe/Config.in"
+	source "package/libteam/Config.in"
 	source "package/libtelnet/Config.in"
 	source "package/libtirpc/Config.in"
 	source "package/libtorrent/Config.in"
diff --git a/package/libteam/0001-revert-disregard-current-state.patch b/package/libteam/0001-revert-disregard-current-state.patch
new file mode 100644
index 0000000000..339afbf416
--- /dev/null
+++ b/package/libteam/0001-revert-disregard-current-state.patch
@@ -0,0 +1,51 @@
+From 61efd6de2fbb8ee077863ee5a355ac3dfd9365b9 Mon Sep 17 00:00:00 2001
+From: Xin Long <lucien.xin@gmail.com>
+Date: Tue, 1 Sep 2020 13:59:27 +0800
+Subject: [PATCH] Revert "teamd: Disregard current state when considering port
+ enablement"
+
+This reverts commit deadb5b715227429a1879b187f5906b39151eca9.
+
+As Patrick noticed, with that commit, teamd_port_check_enable()
+would set the team port to the new state unconditionally, which
+triggers another change message from kernel to userspace, then
+teamd_port_check_enable() is called again to set the team port
+to the new state.
+
+This would go around and around to update the team port state,
+and even cause teamd to consume 100% cpu.
+
+As the issue caused by that commit is serious, it has to be
+reverted. As for the issued fixed by that commit, I would
+propose a new fix later.
+
+Signed-off-by: Jiri Pirko <jiri@nvidia.com>
+---
+ teamd/teamd_per_port.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/teamd/teamd_per_port.c b/teamd/teamd_per_port.c
+index 166da57..d429753 100644
+--- a/teamd/teamd_per_port.c
++++ b/teamd/teamd_per_port.c
+@@ -442,14 +442,18 @@ int teamd_port_check_enable(struct teamd_context *ctx,
+ 			    bool should_enable, bool should_disable)
+ {
+ 	bool new_enabled_state;
++	bool curr_enabled_state;
+ 	int err;
+ 
+ 	if (!teamd_port_present(ctx, tdport))
+ 		return 0;
++	err = teamd_port_enabled(ctx, tdport, &curr_enabled_state);
++	if (err)
++		return err;
+ 
+-	if (should_enable)
++	if (!curr_enabled_state && should_enable)
+ 		new_enabled_state = true;
+-	else if (should_disable)
++	else if (curr_enabled_state && should_disable)
+ 		new_enabled_state = false;
+ 	else
+ 		return 0;
diff --git a/package/libteam/0002-fix-build-on-openwrt-musl-libc.patch b/package/libteam/0002-fix-build-on-openwrt-musl-libc.patch
new file mode 100644
index 0000000000..f2b38a137d
--- /dev/null
+++ b/package/libteam/0002-fix-build-on-openwrt-musl-libc.patch
@@ -0,0 +1,41 @@
+From 267f24839536234ca621d4fd0466d3b57cb6dccd Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Pavel=20=C5=A0imerda?= <code@simerda.eu>
+Date: Tue, 12 Jan 2021 04:41:56 +0100
+Subject: [PATCH] fix build on OpenWRT/musl-libc
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Pavel ?imerda <code@simerda.eu>
+Signed-off-by: Jiri Pirko <jiri@nvidia.com>
+---
+ teamd/teamd_runner_lacp.c | 2 --
+ utils/teamnl.c            | 1 +
+ 2 files changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/teamd/teamd_runner_lacp.c b/teamd/teamd_runner_lacp.c
+index 9437f05..f524be2 100644
+--- a/teamd/teamd_runner_lacp.c
++++ b/teamd/teamd_runner_lacp.c
+@@ -23,9 +23,7 @@
+ #include <unistd.h>
+ #include <limits.h>
+ #include <sys/ioctl.h>
+-#include <linux/if_ether.h>
+ #include <sys/socket.h>
+-#include <linux/netdevice.h>
+ #include <netinet/in.h>
+ #include <errno.h>
+ #include <team.h>
+diff --git a/utils/teamnl.c b/utils/teamnl.c
+index c53345d..ec2b435 100644
+--- a/utils/teamnl.c
++++ b/utils/teamnl.c
+@@ -24,6 +24,7 @@
+ #include <getopt.h>
+ #include <errno.h>
+ #include <sys/signalfd.h>
++#include <sys/select.h>
+ #include <signal.h>
+ #include <unistd.h>
+ #include <team.h>
diff --git a/package/libteam/0003-increase-wait-time-for-daemon-kill.patch b/package/libteam/0003-increase-wait-time-for-daemon-kill.patch
new file mode 100644
index 0000000000..7827a654ef
--- /dev/null
+++ b/package/libteam/0003-increase-wait-time-for-daemon-kill.patch
@@ -0,0 +1,37 @@
+From 6875e6c8efb0fe86766b3d4f1d0db390af6998b7 Mon Sep 17 00:00:00 2001
+From: Hangbin Liu <liuhangbin@gmail.com>
+Date: Tue, 15 Dec 2020 19:33:17 +0800
+Subject: [PATCH] teamd: increase the waitting time for daemon killing
+
+In the current code, we wait for at most 5s when kill the daemon pid.
+But in some environment, it may need more time. Then the teamd -k will
+failed and return error "Failed to kill daemon: Timer expired".
+
+Let's increase the value to have enough time. Here is the reuslt with
+this patch:
+
+$ time libteam/teamd/teamd -k -t team0
+
+real    0m10.442s
+user    0m0.017s
+sys     0m0.016s
+
+Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
+Signed-off-by: Jiri Pirko <jiri@nvidia.com>
+---
+ teamd/teamd.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/teamd/teamd.c b/teamd/teamd.c
+index 9360cbf..b310140 100644
+--- a/teamd/teamd.c
++++ b/teamd/teamd.c
+@@ -1858,7 +1858,7 @@ int main(int argc, char **argv)
+ 		break;
+ 	case DAEMON_CMD_KILL:
+ 		if (daemon_pid_file_is_running() > 0) {
+-			err = daemon_pid_file_kill_wait(SIGTERM, 5);
++			err = daemon_pid_file_kill_wait(SIGTERM, 30);
+ 			if (err)
+ 				teamd_log_warn("Failed to kill daemon: %s",
+ 					       strerror(errno));
diff --git a/package/libteam/Config.in b/package/libteam/Config.in
new file mode 100644
index 0000000000..e44bdeeba8
--- /dev/null
+++ b/package/libteam/Config.in
@@ -0,0 +1,26 @@
+config BR2_PACKAGE_LIBTEAM
+	bool "libteam"
+	depends on BR2_USE_MMU # fork()
+	select BR2_PACKAGE_JANSSON
+	select BR2_PACKAGE_LIBDAEMON
+	select BR2_PACKAGE_LIBNL
+	select BR2_PACKAGE_LIBNL_TOOLS
+	help
+	  The purpose of the Team driver is to provide a mechanism to
+	  team multiple NICs (ports) into one logical one (teamdev) at
+	  L2 layer. The process is called "channel bonding", "Ethernet
+	  bonding", "channel teaming", "link aggregation", etc.
+
+	  Team tries to provide similar functionality as the bonding
+	  driver, however architecturally it is quite different. Team is
+	  modular, userspace driven, very lean and efficient, and it
+	  does have some distinct advantages over bonding. The way Team
+	  is configured differs dramatically from the way bonding is.
+
+	  https://github.com/jpirko/libteam
+
+comment "libnl tools needs a toolchain w/ dynamic library"
+	depends on BR2_STATIC_LIBS
+
+comment "libnl needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS
diff --git a/package/libteam/libteam.hash b/package/libteam/libteam.hash
new file mode 100644
index 0000000000..39d29425d3
--- /dev/null
+++ b/package/libteam/libteam.hash
@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  c69f7cf5a98203d66db10e67b396fe325b77a5a9491d1e07e8a07cba3ba841bb  libteam-1.31.tar.gz
+sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING
diff --git a/package/libteam/libteam.mk b/package/libteam/libteam.mk
new file mode 100644
index 0000000000..2a66345192
--- /dev/null
+++ b/package/libteam/libteam.mk
@@ -0,0 +1,22 @@
+################################################################################
+#
+# libteam
+#
+################################################################################
+
+LIBTEAM_VERSION = 1.31
+LIBTEAM_SITE = $(call github,jpirko,libteam,v$(LIBTEAM_VERSION))
+LIBTEAM_AUTORECONF = YES
+LIBTEAM_LICENSE = LGPL-2.1+
+LIBTEAM_LICENSE_FILES = COPYING
+LIBTEAM_INSTALL_STAGING = YES
+LIBTEAM_DEPENDENCIES = host-pkgconf jansson libdaemon libnl
+
+# The most common team modes, use a custom kernel config to enable more.
+define LIBTEAM_LINUX_CONFIG_FIXUPS
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM_MODE_ACTIVEBACKUP)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM_MODE_LOADBALANCE)
+endef
+
+$(eval $(autotools-package))
-- 
2.25.1

^ permalink raw reply related	[flat|nested] 4+ messages in thread

* [Buildroot] [PATCH v2 1/1] package/libteam: new package
  2021-07-15  8:34 ` [Buildroot] [PATCH v2 1/1] package/libteam: new package Joachim Wiberg
@ 2021-07-17 17:04   ` Yann E. MORIN
  2021-07-19  7:53     ` Joachim Wiberg
  0 siblings, 1 reply; 4+ messages in thread
From: Yann E. MORIN @ 2021-07-17 17:04 UTC (permalink / raw)
  To: buildroot

Joachim, All,

On 2021-07-15 10:34 +0200, Joachim Wiberg spake thusly:
> This package is the userspace daemon, client tool, and library for the
> team device implementation in the Linux kernel.  Team is an alternative
> to the traditional bonding driver and provides more "runners", or modes,
> of operation for aggregates.
> 
> Team devices require the following kernel config, the most common modes
> have been included to be enabled when this package is selected:
> 
>     CONFIG_NET_TEAM=y

This also needs NETDEVICES and NET_CORE. Arguably, those two will most
probably be selected, but still...

>     CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=y
>     CONFIG_NET_TEAM_MODE_LOADBALANCE=y

Is it really necessary to select those last two?

Load-balancing requires BPF, too, to load the BPF function that will do
the port selection.

But I would really just leave it up to the user to enable whatever mode
they need/want; just enforce CONFIG_NET_TEAM=y (and NETDEVICES and
NET_CORE, of course).

> Other possible, but not enabled, modes are:
> 
>     CONFIG_NET_TEAM_MODE_BROADCAST=y
>     CONFIG_NET_TEAM_MODE_ROUNDROBIN=y
>     CONFIG_NET_TEAM_MODE_RANDOM=y

Those do look like they are not really usefull in production, and are
rather for testing pruposes, indeed.

> Backported the three most relevant patches to fix musl build, revert of
> a fix prior to 1.31 that can cause high CPU load, and a fix to prevent
> failing to stop the daemon due to too short timeout for kill command.
> 
> Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>
> Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
> ---
[--SNIP--]
> diff --git a/package/libteam/Config.in b/package/libteam/Config.in
> new file mode 100644
> index 0000000000..e44bdeeba8
> --- /dev/null
> +++ b/package/libteam/Config.in
> @@ -0,0 +1,26 @@
> +config BR2_PACKAGE_LIBTEAM
> +	bool "libteam"
> +	depends on BR2_USE_MMU # fork()
> +	select BR2_PACKAGE_JANSSON
> +	select BR2_PACKAGE_LIBDAEMON
> +	select BR2_PACKAGE_LIBNL
> +	select BR2_PACKAGE_LIBNL_TOOLS

As noted by Yegor previopusly, you need to propagate the dependencies of
the packags you select;

    depends on BR2_TOOLCHAIN_HAS_THREADS  # libnl
    depends on !BR2_STATIC_LIBS  # libnl-tools
    select BR2_PACKAGE_LIBNL
    select BR2_PACKAGE_LIBNL_TOOLS

> +	help
> +	  The purpose of the Team driver is to provide a mechanism to
> +	  team multiple NICs (ports) into one logical one (teamdev) at
> +	  L2 layer. The process is called "channel bonding", "Ethernet
> +	  bonding", "channel teaming", "link aggregation", etc.
> +
> +	  Team tries to provide similar functionality as the bonding
> +	  driver, however architecturally it is quite different. Team is
> +	  modular, userspace driven, very lean and efficient, and it
> +	  does have some distinct advantages over bonding. The way Team
> +	  is configured differs dramatically from the way bonding is.
> +
> +	  https://github.com/jpirko/libteam
> +
> +comment "libnl tools needs a toolchain w/ dynamic library"

This is not libnl, but libteam (the comment is about this package).

> +	depends on BR2_STATIC_LIBS

The comment should also depend on MMU, so that it is not visible when
MMU is not enabled.

> +
> +comment "libnl needs a toolchain w/ threads"
> +	depends on !BR2_TOOLCHAIN_HAS_THREADS

Ditto, this is libteam, and it should also depend on MMU.

> diff --git a/package/libteam/libteam.hash b/package/libteam/libteam.hash
> new file mode 100644
> index 0000000000..39d29425d3
> --- /dev/null
> +++ b/package/libteam/libteam.hash
> @@ -0,0 +1,3 @@
> +# Locally calculated
> +sha256  c69f7cf5a98203d66db10e67b396fe325b77a5a9491d1e07e8a07cba3ba841bb  libteam-1.31.tar.gz
> +sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING
> diff --git a/package/libteam/libteam.mk b/package/libteam/libteam.mk
> new file mode 100644
> index 0000000000..2a66345192
> --- /dev/null
> +++ b/package/libteam/libteam.mk
> @@ -0,0 +1,22 @@
> +################################################################################
> +#
> +# libteam
> +#
> +################################################################################
> +
> +LIBTEAM_VERSION = 1.31
> +LIBTEAM_SITE = $(call github,jpirko,libteam,v$(LIBTEAM_VERSION))
> +LIBTEAM_AUTORECONF = YES
> +LIBTEAM_LICENSE = LGPL-2.1+
> +LIBTEAM_LICENSE_FILES = COPYING
> +LIBTEAM_INSTALL_STAGING = YES
> +LIBTEAM_DEPENDENCIES = host-pkgconf jansson libdaemon libnl

Pet-peeve of mine, about the ordering:

    _VERSION = ...
    _SITE = ...

    _CPE_ID_xxx = ... (if any)
    _LICENSE = ...
    _LICENSE_FILES = ...

    _DEPENDENCIES = ...
    _AUTORECONF = YES
    _INSTALL_STAGING = YES

This is enforced nowhere, is decribed nowhere, but it follows quite a
logical ordering and grouping:

  - where to find it
  - what it is (cpe) and the conditions to use it (license)
  - what it needs
  - how to pre-configure it
  - where to instal it (staging., target...)

Regards,
Yann E. MORIN.

> +# The most common team modes, use a custom kernel config to enable more.
> +define LIBTEAM_LINUX_CONFIG_FIXUPS
> +	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM)
> +	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM_MODE_ACTIVEBACKUP)
> +	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_TEAM_MODE_LOADBALANCE)
> +endef
> +
> +$(eval $(autotools-package))
> -- 
> 2.25.1
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 561 099 427 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Buildroot] [PATCH v2 1/1] package/libteam: new package
  2021-07-17 17:04   ` Yann E. MORIN
@ 2021-07-19  7:53     ` Joachim Wiberg
  0 siblings, 0 replies; 4+ messages in thread
From: Joachim Wiberg @ 2021-07-19  7:53 UTC (permalink / raw)
  To: buildroot


Hi Yann!

On Sat, Jul 17, 2021 at 19:04, "Yann E. MORIN" <yann.morin.1998@free.fr> wrote:
> On 2021-07-15 10:34 +0200, Joachim Wiberg spake thusly:
>> [snip]
>> Team devices require the following kernel config, the most common modes
>> have been included to be enabled when this package is selected:
>>     CONFIG_NET_TEAM=y
> This also needs NETDEVICES and NET_CORE. Arguably, those two will most
> probably be selected, but still...

Ah, thanks or course!

>>     CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=y
>>     CONFIG_NET_TEAM_MODE_LOADBALANCE=y
> Is it really necessary to select those last two?

I think least one mode should be enabled, but then I'm just focusing
too much on my particular use-case (active-backup).

> Load-balancing requires BPF, too, to load the BPF function that will do
> the port selection.

True, so that one goes without saying.

> But I would really just leave it up to the user to enable whatever mode
> they need/want; just enforce CONFIG_NET_TEAM=y (and NETDEVICES and
> NET_CORE, of course).

Hmm, OK you're right.  We shouldn't guess what the user needs and this
being an advanced component make that pretty clear.  Thank you!

>> [snop]
>> +++ b/package/libteam/Config.in
>> @@ -0,0 +1,26 @@
>> +config BR2_PACKAGE_LIBTEAM
>> +	bool "libteam"
>> +	depends on BR2_USE_MMU # fork()
>> +	select BR2_PACKAGE_JANSSON
>> +	select BR2_PACKAGE_LIBDAEMON
>> +	select BR2_PACKAGE_LIBNL
>> +	select BR2_PACKAGE_LIBNL_TOOLS
> As noted by Yegor previopusly, you need to propagate the dependencies of
> the packags you select;
>     depends on BR2_TOOLCHAIN_HAS_THREADS  # libnl
>     depends on !BR2_STATIC_LIBS  # libnl-tools
>     select BR2_PACKAGE_LIBNL
>     select BR2_PACKAGE_LIBNL_TOOLS

Ahaa, now I'm finally starting to understand! :)

>> +comment "libnl tools needs a toolchain w/ dynamic library"
> This is not libnl, but libteam (the comment is about this package).

Got it, that makes much more sense.  I really didn't get it
the first time around.  Sorry for the mess.

>> +	depends on BR2_STATIC_LIBS
> The comment should also depend on MMU, so that it is not visible when
> MMU is not enabled.

OK, fixing.

>> +comment "libnl needs a toolchain w/ threads"
>> +	depends on !BR2_TOOLCHAIN_HAS_THREADS
> Ditto, this is libteam, and it should also depend on MMU.

Just read through a ton of other Config.in's, and I think I've got
it now how depe?dencies and the user-friendly comment helper work.

>> [snip]
>> +LIBTEAM_VERSION = 1.31
>> +LIBTEAM_SITE = $(call github,jpirko,libteam,v$(LIBTEAM_VERSION))
>> +LIBTEAM_AUTORECONF = YES
>> +LIBTEAM_LICENSE = LGPL-2.1+
>> +LIBTEAM_LICENSE_FILES = COPYING
>> +LIBTEAM_INSTALL_STAGING = YES
>> +LIBTEAM_DEPENDENCIES = host-pkgconf jansson libdaemon libnl
> Pet-peeve of mine, about the ordering:
> This is enforced nowhere, is decribed nowhere, but it follows quite a
> logical ordering and grouping:

Thank you for taking the time to explain, it does indeed make sense,
I will fix that too in v3.

Cheers
 /Joachim

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-07-19  7:53 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-15  8:34 [Buildroot] [PATCH v2 0/1] Add support for teamd/libteam Joachim Wiberg
2021-07-15  8:34 ` [Buildroot] [PATCH v2 1/1] package/libteam: new package Joachim Wiberg
2021-07-17 17:04   ` Yann E. MORIN
2021-07-19  7:53     ` Joachim Wiberg

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