#545: Store configured Python and NumPy versions in built code

include/realizations/catchment/Bmi_Py_Build_Versions.hpp

@@ -0,0 +1,22 @@
+#ifndef NGEN_BMI_PY_BUILD_VERSIONS_HPP
+#define NGEN_BMI_PY_BUILD_VERSIONS_HPP
+
+#ifdef ACTIVATE_PYTHON
+
+#include <string>
+
+namespace models {
+    namespace bmi {
+        extern const int python_major;
+        extern const int python_minor;
+        // Store the patch version as a string because it may have a non-numeric suffix
+        extern const std::string python_patch;
+
+        // NumPy version is not broken down by CMake
+        extern const std::string numpy_version;
+    }
+}
+
+#endif // ACTIVATE_PYTHON
+
+#endif // NGEN_BMI_PY_BUILD_VERSIONS_HPP

src/realizations/catchment/Bmi_Py_Build_Versions.in

@@ -0,0 +1,16 @@
+#ifdef ACTIVATE_PYTHON
+
+#include "Bmi_Py_Build_Versions.hpp"
+
+namespace models {
+    namespace bmi {
+
+        const int python_major = ${Python_VERSION_MAJOR};
+        const int python_minor = ${Python_VERSION_MINOR};
+        const std::string python_patch = "${Python_VERSION_PATCH}";
+
+        const std::string numpy_version = "${Python_NumPy_VERSION}";
+    }
+}
+
+#endif

src/realizations/catchment/CMakeLists.txt

@@ -31,6 +31,8 @@ target_link_libraries(realizations_catchment PUBLIC
 if(NGEN_ACTIVATE_PYTHON)
    target_include_directories(realizations_catchment PUBLIC ${PROJECT_SOURCE_DIR}/extern/pybind11/include)
    target_link_libraries(realizations_catchment PUBLIC pybind11::embed)
+   configure_file(Bmi_Py_Build_Versions.in Bmi_Py_Build_Versions.cpp)
+   target_sources(realizations_catchment PRIVATE Bmi_Py_Build_Versions.cpp)
 endif()
 
 ##### Logic for Fortran integration