Recursion

setup.py

@@ -21,6 +21,8 @@
 
 
 def get_petsc_dir():
+    """Attempts to find the PETSc directory on the system
+    """
     petsc_dir = os.environ.get("PETSC_DIR")
     petsc_arch = os.environ.get("PETSC_ARCH", "")
     if petsc_dir is None:
@@ -37,6 +39,18 @@ def get_petsc_dir():
     return pathlist
 
 
+def _requirements(deps, pkg):
+    """Recursively obtain the dependencies of a package using pkgconfig
+    """
+    deps = pkgconfig.requires(pkg)
+    if len(deps[0]):
+        for p in deps:
+            deps.extend(_requirements(deps, p))
+        return deps
+    else:
+        return []
+
+
 # JBTODO: This is deprecated behaviour, what to do?:
 if "clean" in sys.argv[1:]:
     # Forcibly remove the results of Cython.
@@ -117,6 +131,9 @@ def __getitem__(self, key):
     )
 elif pkgconfig.exists("hdf5"):
     hdf5_ = ExternalDependency(**pkgconfig.parse("hdf5"))
+    deps = _requirements([], "hdf5")
+    for pkg in deps:
+        hdf5_ += ExternalDependency(**pkgconfig.parse(pkg))
 else:
     # Set the library name and hope for the best
     hdf5_ = ExternalDependency(libraries=["hdf5"])