Failsafe find_package(PythonLibs REQUIRED)

Author: chudur-budur

numba_dpex/core/runtime/CMakeLists.txt

@@ -57,6 +57,33 @@ message(STATUS "CMAKE_MODULE_PATH=" "${CMAKE_MODULE_PATH}")
 
 # Add packages
 find_package(PythonLibs REQUIRED)
+
+if(NOT PythonLibs_FOUND)
+    # Manually get PYTHON_INCLUDE_DIRS
+    execute_process(
+        COMMAND python -c "import sysconfig; print(sysconfig.get_path('include'))"
+        OUTPUT_VARIABLE PYTHON_INCLUDE_DIRS
+        RESULT_VARIABLE RET
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+
+    if(RET EQUAL "1")
+        message(FATAL_ERROR "Couldn't find PYTHON_INCLUDE_DIRS")
+    endif()
+
+    # Manually PYTHON_LIBRARIES
+    execute_process(
+        COMMAND python -c "import sysconfig; print(sysconfig.get_config_var('LIBDIR'))"
+        OUTPUT_VARIABLE PYTHON_LIBRARIES
+        RESULT_VARIABLE RET
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+
+    if(RET EQUAL "1")
+        message(FATAL_ERROR "Couldn't find PYTHON_LIBRARIES")
+    endif()
+endif()
+
 find_package(PythonExtensions REQUIRED)
 find_package(NumPy REQUIRED)
 find_package(Dpctl REQUIRED)