[Buildroot] [PATCH v2,2/2] package/boost: threads needs date-time

[Fabrice Fontaine]

Fix the following build failure with gcc >= 7 raised since commit
4e267a7d3d5d350710a81ada188a1629348e4b4a because until cmake 3.21.3 and
https://github.com/Kitware/CMake/commit/1ad0c5ae53fc0c4f774166337f0e9c93c578cf9b,
cmake assumed that boost threads depends on boost date-time. As, we
can't patch all cmake in the field, just select boost date-time.

-- Found Boost: /home/buildroot/autobuild/instance-3/output-1/host/sh4-buildroot-linux-uclibc/sysroot/usr/include (found version "1.77.0") found components: thread chrono atomic missing components: date_time

Fixes:
 - http://autobuild.buildroot.org/results/e7443e3bc955e7eddd7bed63e2728880dabb31a7

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
Changes v1 -> v2 (after review of Yann E. Morin):
 - Update commit message to explain the relationship with cmake

 package/boost/Config.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/boost/Config.in b/package/boost/Config.in
index 1c405a36c3..8310294ffd 100644
--- a/package/boost/Config.in
+++ b/package/boost/Config.in
@@ -348,6 +348,7 @@ config BR2_PACKAGE_BOOST_THREAD
 	depends on BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
 	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::current_exception
 	select BR2_PACKAGE_BOOST_CHRONO
+	select BR2_PACKAGE_BOOST_DATE_TIME
 	select BR2_PACKAGE_BOOST_SYSTEM
 	help
 	  Portable C++ multi-threading. C++11, C++14.
-- 
2.33.0