diff --git a/package/gnuradio/Config.in b/package/gnuradio/Config.in
index 51237e62b9..be997e91e2 100644
--- a/package/gnuradio/Config.in
+++ b/package/gnuradio/Config.in
@@ -79,6 +79,7 @@ config BR2_PACKAGE_GNURADIO_PYTHON
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_HOST_GCC_AT_LEAST_9 # host-python-numpy
 	select BR2_PACKAGE_BOOST_PYTHON
 	select BR2_PACKAGE_PYTHON_NUMPY # runtime
 	select BR2_PACKAGE_PYTHON_PYBIND
@@ -86,8 +87,9 @@ config BR2_PACKAGE_GNURADIO_PYTHON
 	help
 	  Enable python component
 
-comment "python support needs glibc or musl"
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+comment "python support needs a glibc or musl toolchain w/ host gcc >= 9"
+	depends on !BR2_HOST_GCC_AT_LEAST_9 || \
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
 
 config BR2_PACKAGE_GNURADIO_UTILS
 	bool "gr-utils support"
diff --git a/package/ola/Config.in b/package/ola/Config.in
index 701083b5d3..dd0be6f35e 100644
--- a/package/ola/Config.in
+++ b/package/ola/Config.in
@@ -53,14 +53,16 @@ config BR2_PACKAGE_OLA_RDM_TESTS
 	depends on BR2_PACKAGE_OLA_PYTHON_BINDINGS
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
 	select BR2_PACKAGE_PYTHON_NUMPY
 	help
 	  Build OLA RDM tests.
 
-comment "rdm tests needs a toolchain w/ glibc or musl"
+comment "rdm tests needs a glibc or musl toolchain w/ gcc >= 9"
 	depends on BR2_PACKAGE_OLA_PYTHON_BINDINGS
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !BR2_TOOLCHAIN_USES_GLIBC && !BR2_TOOLCHAIN_USES_MUSL
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
+		!BR2_TOOLCHAIN_USES_GLIBC && !BR2_TOOLCHAIN_USES_MUSL
 
 comment "plugin selections"
 
diff --git a/package/opencv3/Config.in b/package/opencv3/Config.in
index b9ea033f13..be0680084b 100644
--- a/package/opencv3/Config.in
+++ b/package/opencv3/Config.in
@@ -157,15 +157,17 @@ config BR2_PACKAGE_OPENCV3_LIB_PYTHON
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
 	select BR2_PACKAGE_PYTHON_NUMPY
 	help
 	  Include opencv_python module into the OpenCV build.  No
 	  python example is installed.
 
-comment "python support needs glibc or musl"
+comment "python support needs a glibc or musl toolchain w/ gcc >= 9"
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
 
 config BR2_PACKAGE_OPENCV3_LIB_SHAPE
 	bool "shape"
diff --git a/package/opencv4/Config.in b/package/opencv4/Config.in
index 286a7ebf9d..78ec7c2e41 100644
--- a/package/opencv4/Config.in
+++ b/package/opencv4/Config.in
@@ -180,15 +180,17 @@ config BR2_PACKAGE_OPENCV4_LIB_PYTHON
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
 	select BR2_PACKAGE_PYTHON_NUMPY
 	help
 	  Include opencv_python module into the OpenCV build.  No
 	  python example is installed.
 
-comment "python support needs glibc or musl"
+comment "python support needs a glibc or musl toolchain w/ gcc >= 9"
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_9 ||\
+		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
 
 config BR2_PACKAGE_OPENCV4_LIB_SHAPE
 	bool "shape"
diff --git a/package/piglit/Config.in b/package/piglit/Config.in
index 22d1c7c28e..48b7641909 100644
--- a/package/piglit/Config.in
+++ b/package/piglit/Config.in
@@ -8,6 +8,8 @@ config BR2_PACKAGE_PIGLIT
 		BR2_PACKAGE_WAFFLE_SUPPORTS_GBM
 	depends on BR2_INSTALL_LIBSTDCPP # mesa3d-demos, python-numpy
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
+	depends on BR2_HOST_GCC_AT_LEAST_9 # host-python-numpy
 	select BR2_PACKAGE_LIBDRM if BR2_PACKAGE_HAS_LIBGL
 	select BR2_PACKAGE_LIBPNG
 	select BR2_PACKAGE_LIBXKBCOMMON if BR2_PACKAGE_WAYLAND
@@ -32,6 +34,8 @@ config BR2_PACKAGE_PIGLIT
 
 	  https://piglit.freedesktop.org
 
-comment "piglit needs a glibc or musl toolchain w/ C++"
+comment "piglit needs a glibc or musl toolchain w/ C++, gcc >= 9, host gcc >= 9"
 	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
+		!BR2_HOST_GCC_AT_LEAST_9 || \
 		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
diff --git a/package/python-crossbar/Config.in b/package/python-crossbar/Config.in
index aadcb2c360..357be4803c 100644
--- a/package/python-crossbar/Config.in
+++ b/package/python-crossbar/Config.in
@@ -3,6 +3,7 @@ config BR2_PACKAGE_PYTHON_CROSSBAR
 	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS # python-cryptography
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS # python-numpy
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
 	depends on BR2_INSTALL_LIBSTDCPP # python-autobahn's compress and serialization
 	# All the following dependencies are runtime dependencies. It
 	# matches almost 1:1 the requirements-min.txt from crossbar
@@ -64,8 +65,8 @@ config BR2_PACKAGE_PYTHON_CROSSBAR
 
 	  https://pypi.python.org/pypi/crossbar
 
-comment "python-crossbar needs a glibc or musl toolchain w/ C++"
+comment "python-crossbar needs a glibc or musl toolchain w/ C++, gcc >= 9"
 	depends on BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL) || \
-		!BR2_INSTALL_LIBSTDCPP
+		!BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_9
diff --git a/package/python-matplotlib/Config.in b/package/python-matplotlib/Config.in
index 8a9281b8e7..cc0d830f4f 100644
--- a/package/python-matplotlib/Config.in
+++ b/package/python-matplotlib/Config.in
@@ -3,6 +3,8 @@ config BR2_PACKAGE_PYTHON_MATPLOTLIB
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
+	depends on BR2_HOST_GCC_AT_LEAST_9 # host-python-numpy
 	select BR2_PACKAGE_FREETYPE # runtime
 	select BR2_PACKAGE_LIBPNG # runtime
 	select BR2_PACKAGE_PYTHON_CERTIFI # runtime
@@ -36,6 +38,7 @@ config BR2_PACKAGE_PYTHON_MATPLOTLIB_QT
 
 endif
 
-comment "python-matplotlib needs a glibc or musl toolchain w/ C++"
+comment "python-matplotlib needs a glibc or musl toolchain w/ C++, gcc >= 9, host gcc >= 9"
 	depends on !(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL) || \
-		!BR2_INSTALL_LIBSTDCPP
+		!BR2_INSTALL_LIBSTDCPP || !BR2_HOST_GCC_AT_LEAST_9 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9
diff --git a/package/python-numpy/Config.in b/package/python-numpy/Config.in
index 132c3f7a82..c27baec3b3 100644
--- a/package/python-numpy/Config.in
+++ b/package/python-numpy/Config.in
@@ -19,6 +19,7 @@ config BR2_PACKAGE_PYTHON_NUMPY
 	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
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9
 	help
 	  NumPy is the fundamental package for scientific computing
 	  with Python.
@@ -28,7 +29,8 @@ config BR2_PACKAGE_PYTHON_NUMPY
 
 	  http://www.numpy.org/
 
-comment "python-numpy needs a glibc or musl toolchain w/ C++"
+comment "python-numpy needs a glibc or musl toolchain w/ C++, gcc >= 9"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
 		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
diff --git a/package/python-scipy/Config.in b/package/python-scipy/Config.in
index 0a4acb9699..aa7eefd44d 100644
--- a/package/python-scipy/Config.in
+++ b/package/python-scipy/Config.in
@@ -4,6 +4,8 @@ config BR2_PACKAGE_PYTHON_SCIPY
 	depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS # lapack
 	depends on BR2_PACKAGE_OPENBLAS_ARCH_SUPPORTS # openblas
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
+	depends on BR2_HOST_GCC_AT_LEAST_9 # host-python-numpy
 	depends on BR2_TOOLCHAIN_HAS_FORTRAN # lapack
 	depends on BR2_INSTALL_LIBSTDCPP
 	select BR2_PACKAGE_LAPACK
@@ -19,10 +21,11 @@ config BR2_PACKAGE_PYTHON_SCIPY
 
 	  https://www.scipy.org/scipylib/
 
-comment "python-scipy needs toolchain w/ fortran and c++ and glibc or musl"
+comment "python-scipy needs glibc or musl toolchain w/ fortran, c++, gcc >= 9, host gcc >= 9"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_LAPACK_ARCH_SUPPORTS
 	depends on BR2_PACKAGE_OPENBLAS_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_HAS_FORTRAN || \
-		!BR2_INSTALL_LIBSTDCPP || \
+		!BR2_INSTALL_LIBSTDCPP || !BR2_HOST_GCC_AT_LEAST_9 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
 		(!BR2_TOOLCHAIN_USES_GLIBC && !BR2_TOOLCHAIN_USES_MUSL)
diff --git a/package/python-zlmdb/Config.in b/package/python-zlmdb/Config.in
index 8eba2d7946..007ca72723 100644
--- a/package/python-zlmdb/Config.in
+++ b/package/python-zlmdb/Config.in
@@ -3,6 +3,7 @@ config BR2_PACKAGE_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
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
 	select BR2_PACKAGE_PYTHON_CBOR2 # runtime
 	select BR2_PACKAGE_PYTHON_CFFI # runtime
 	select BR2_PACKAGE_PYTHON_CLICK # runtime
@@ -18,7 +19,8 @@ config BR2_PACKAGE_PYTHON_ZLMDB
 
 	  https://github.com/crossbario/zlmdb
 
-comment "python-zlmdb needs a glibc or musl toolchain w/ C++"
+comment "python-zlmdb needs a glibc or musl toolchain w/ C++, gcc >= 9"
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
 		!(BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL)
diff --git a/package/uhd/Config.in b/package/uhd/Config.in
index 4316a2c185..2ccfe3ccb8 100644
--- a/package/uhd/Config.in
+++ b/package/uhd/Config.in
@@ -94,16 +94,20 @@ config BR2_PACKAGE_UHD_OCTOCLOCK
 	help
 	  enable OctoClock support
 
-comment "uhd python API needs python3 and a toolchain w/ glibc or musl"
+comment "uhd python API needs python3 and a glibc or musl toolchain w/ gcc >= 9, host gcc >= 9"
 	depends on !BR2_PACKAGE_PYTHON3
 	depends on !BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
-	depends on !(BR2_TOOLCHAIN_USES_GLIBC && BR2_TOOLCHAIN_USES_MUSL) # python-numpy
+	depends on !BR2_HOST_GCC_AT_LEAST_9 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_9 || \
+		!(BR2_TOOLCHAIN_USES_GLIBC && BR2_TOOLCHAIN_USES_MUSL) # python-numpy
 
 config BR2_PACKAGE_UHD_PYTHON
 	bool "python API support"
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_MUSL # python-numpy
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_9 # python-numpy
+	depends on BR2_HOST_GCC_AT_LEAST_9 # host-python-numpy
 	select BR2_PACKAGE_PYTHON_NUMPY
 	select BR2_PACKAGE_PYTHON_REQUESTS
 	help