[Buildroot] [git commit branch/2022.02.x] package/xmrig: needs C++

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=3002bbcc4cf998179737a3e353c015e54a1dde08
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.02.x

xmrig needs C++ since its addition in commit
6f70990ccf6cb993fc31519337390e436d15493b:

CMake Error at CMakeLists.txt:2 (project):
  No CMAKE_CXX_COMPILER could be found.

Fixes:
 - http://autobuild.buildroot.org/results/48f4ff6dc8281ffa99a45401b5941b28f2c94bc2

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
(cherry picked from commit 2d806891cb0dc0fd2d30171d14bc9e911abbe76e)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 package/xmrig/Config.in | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/package/xmrig/Config.in b/package/xmrig/Config.in
index 7024241017..c5c6b3e37b 100644
--- a/package/xmrig/Config.in
+++ b/package/xmrig/Config.in
@@ -8,15 +8,17 @@ config BR2_PACKAGE_XMRIG
 	# xmrig needs fenv.h which is not provided by uclibc
 	depends on !BR2_TOOLCHAIN_USES_UCLIBC
 	depends on !BR2_STATIC_LIBS # libuv
+	depends on BR2_INSTALL_LIBSTDCPP
 	select BR2_PACKAGE_LIBUV
 	help
 	  RandomX, CryptoNight, AstroBWT and Argon2 CPU/GPU miner.
 
 	  https://xmrig.com
 
-comment "xmrig needs a glibc or musl toolchain w/ NPTL, dynamic library"
+comment "xmrig needs a glibc or musl toolchain w/ NPTL, dynamic library, C++"
 	depends on BR2_aarch64 || BR2_x86_64 || BR2_i386
 	depends on BR2_USE_MMU
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
-		BR2_TOOLCHAIN_USES_UCLIBC || BR2_STATIC_LIBS
+		BR2_TOOLCHAIN_USES_UCLIBC || BR2_STATIC_LIBS || \
+		!BR2_INSTALL_LIBSTDCPP