package/python-pyproj: propagate dependencies from proj

The python-pyproj package was introduced in
7c65b4484e1ed414496488cf8eb4fe967b10c087, and it selects
BR2_PACKAGE_PROJ, but forgot to propagate its dependencies, so let's
do that.

Fixes:

WARNING: unmet direct dependencies detected for BR2_PACKAGE_PROJ
  Depends on [n]: BR2_INSTALL_LIBSTDCPP [=n] && BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 [=y] && BR2_TOOLCHAIN_HAS_THREADS_NPTL [=y] && BR2_USE_WCHAR [=y]
  Selected by [y]:
  - BR2_PACKAGE_PYTHON_PYPROJ [=y] && BR2_PACKAGE_PYTHON3 [=y]

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/python-pyproj/Config.in

@@ -1,5 +1,9 @@
 config BR2_PACKAGE_PYTHON_PYPROJ
 	bool "python-pyproj"
+	depends on BR2_INSTALL_LIBSTDCPP # proj
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 # proj
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # proj
+	depends on BR2_USE_WCHAR # proj
 	select BR2_PACKAGE_PYTHON_CERTIFI # runtime
 	select BR2_PACKAGE_PROJ # runtime
 	help
@@ -7,3 +11,8 @@ config BR2_PACKAGE_PYTHON_PYPROJ
 	  coordinate transformations library).
 
 	  https://github.com/pyproj4/pyproj
+
+comment "python-pyproj needs a toolchain w/ C++, gcc >= 4.7, NPTL, wchar"
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 || \
+		!BR2_TOOLCHAIN_HAS_THREADS_NPTL || !BR2_USE_WCHAR