package/python-numpy: needs C++

C++ is mandatory since at least version 1.23.0 and
https://github.com/numpy/numpy/commit/c91a7d0c5691c9d78bd75284777fda73f225155d
resulting in the following build failure since bump to version 1.23.4 in
commit 32d8e23b977a5bba1f23e3821709c6aa9ff3bc55:

RuntimeError: Broken toolchain: cannot link a simple C++ program. note: A compiler with support for C++11 language features is required.

Fixes:
 - http://autobuild.buildroot.org/results/2d048d9b669ad60f37eeb2162b0a4f9fb425be1e

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/piglit/Config.in

@@ -6,6 +6,7 @@ config BR2_PACKAGE_PIGLIT
 		BR2_PACKAGE_WAFFLE_SUPPORTS_WAYLAND || \
 		BR2_PACKAGE_WAFFLE_SUPPORTS_X11_EGL || \
 		BR2_PACKAGE_WAFFLE_SUPPORTS_GBM
+	depends on BR2_INSTALL_LIBSTDCPP # python-numpy
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
 	select BR2_PACKAGE_LIBDRM if BR2_PACKAGE_HAS_LIBGL
 	select BR2_PACKAGE_LIBPNG
@@ -31,5 +32,6 @@ config BR2_PACKAGE_PIGLIT
 
 	  https://piglit.freedesktop.org
 
-comment "piglit needs glibc or musl"
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+comment "piglit needs a glibc or musl toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)

package/python-numpy/Config.in

@@ -16,6 +16,7 @@ config BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 config BR2_PACKAGE_PYTHON_NUMPY
 	bool "python-numpy"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
+	depends on BR2_INSTALL_LIBSTDCPP
 	# python-numpy needs fenv.h which is not provided by uclibc
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL
 	help
@@ -27,6 +28,7 @@ config BR2_PACKAGE_PYTHON_NUMPY
 
 	  http://www.numpy.org/
 
-comment "python-numpy needs glibc or musl"
+comment "python-numpy needs a glibc or musl toolchain w/ C++"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)

package/python-zlmdb/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_PYTHON_ZLMDB
 	bool "python-zlmdb"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS # python-numpy
+	depends on BR2_INSTALL_LIBSTDCPP # python-numpy
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
 	select BR2_PACKAGE_PYTHON_CBOR2 # runtime
 	select BR2_PACKAGE_PYTHON_CFFI # runtime
@@ -17,6 +18,7 @@ config BR2_PACKAGE_PYTHON_ZLMDB
 
 	  https://github.com/crossbario/zlmdb
 
-comment "python-zlmdb needs glibc or musl"
+comment "python-zlmdb needs a glibc or musl toolchain w/ C++"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)