add CMAke file

Author: ChrisBarker-NOAA

CMakeLists.txt

@@ -0,0 +1,46 @@
+cmake_minimum_required(VERSION 3.15...4.0)
+project(${SKBUILD_PROJECT_NAME} LANGUAGES C)
+
+find_package(
+  Python
+  COMPONENTS Interpreter Development.Module NumPy
+  REQUIRED)
+include(UseCython)
+
+# FetchContent_Declare(
+#   gd
+#   URL https://github.com/libgd/libgd/releases/download/gd-2.3.3/
+#   URL_HASH stuff
+# )
+
+# FetchContent_MakeAvailable(gd)
+
+find_library (libgd
+              gd
+              REQUIRED
+              )
+message (STATUS "libgd found at ${libgd}")
+
+find_path (gd_include_path
+           "gd.h"
+           REQUIRED)
+
+message (STATUS "gd.h found at ${gd_include_path}")
+
+cython_transpile(py_gd/py_gd.pyx
+   LANGUAGE C
+   OUTPUT_VARIABLE py_gd_c)
+
+python_add_library(py_gd MODULE "${py_gd_c}" WITH_SOABI)
+target_link_libraries(py_gd PUBLIC "${libgd}" Python::NumPy)
+target_include_directories(py_gd PUBLIC "${gd_include_path}")
+install(TARGETS py_gd DESTINATION py_gd)
+
+
+cython_transpile(py_gd/spline.pyx LANGUAGE C OUTPUT_VARIABLE spline_c)
+
+python_add_library(spline MODULE "${spline_c}" WITH_SOABI)
+target_link_libraries(spline PUBLIC Python::NumPy)
+install(TARGETS spline DESTINATION py_gd)
+
+