Emit error if shared lib is not found

The `check_shared_libraries_closure()` method does not raise an
exception if one of the share libraries is not found.

As the goals here is to make sure the shared libraries link with
appropriate shared libraries, the check should also raise an error
if a `not found` message is returned by `lld`.

An error is now raised when the `not found` message is raised by one
of the shared libraries.

Closes #7

src/e3/anod/spec.py

@@ -484,6 +484,23 @@ def check_shared_libraries_closure(
                 # Line looks like:
                 # ``        otherdll.so => /other/otherdll.so (0xabcd)``
                 name, path = line.strip().split(" => ", 1)
+
+                if case_sensitive:
+                    in_ignored = len([k for k in ignored if name.startswith(k)]) > 0
+                else:
+                    in_ignored = (
+                        len([k for k in ignored if name.lower().startswith(k.lower())])
+                        > 0
+                    )
+
+                # Make sure there are no "not found" errors
+                if "not found" in line.lower():
+                    if not in_ignored:
+                        if lib_file not in errors:
+                            errors[lib_file] = []
+                        errors[lib_file].append(f"\n\t- {name}: {path}")
+                    continue
+
                 path = re.sub(" (.*)", "", path)
 
                 # Make sure a path is defined, we may have lines like::
@@ -494,13 +511,6 @@ def check_shared_libraries_closure(
                 if not path.strip() or not Path(path).exists():
                     continue
 
-                if case_sensitive:
-                    in_ignored = len([k for k in ignored if name.startswith(k)]) > 0
-                else:
-                    in_ignored = (
-                        len([k for k in ignored if name.lower().startswith(k.lower())])
-                        > 0
-                    )
                 if os.path.relpath(path, root_dir).startswith("..") and not in_ignored:
                     if lib_file not in errors:
                         errors[lib_file] = []

tests/tests_e3/anod/spec_test.py

@@ -110,6 +110,34 @@
             ),
         ),
     ),
+    (
+        (
+            (
+                "/usr/bin/ls:\n"
+                "\tlinux-vdso.so.1 (0xxxx)\n"
+                "\tlibselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0xxxx)\n"
+                "\tlibc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0xxxx)\n"
+                "\tlibpcre2-8.so.0 => not found\n"
+                "\t/lib64/ld-linux-x86-64.so.2 (0xxxx)\n"
+            ),
+            ["libc.so.6", "libselinux.so.1"],
+        ),
+        (("- libpcre2-8.so.0: not found"),),
+    ),
+    (
+        (
+            (
+                "/usr/bin/ls:\n"
+                "\tlinux-vdso.so.1 (0xxxx)\n"
+                "\tlibselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0xxxx)\n"
+                "\tlibc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0xxxx)\n"
+                "\tlibpcre2-8.so.0 => not found\n"
+                "\t/lib64/ld-linux-x86-64.so.2 (0xxxx)\n"
+            ),
+            ["libc.so.6", "libselinux.so.1", "libpcre2-8.so.0"],
+        ),
+        (None,),
+    ),
 ]
 
 
@@ -173,13 +201,13 @@ def test_spec_check_dll_closure(ldd, arguments: tuple, expected: tuple) -> None:
     elif errors:
         with pytest.raises(AnodError) as ae:
             test_spec.check_shared_libraries_closure(
-                prefix=None, ignored_libs=None, ldd_output=ldd_output
+                prefix=None, ignored_libs=ignored, ldd_output=ldd_output
             )
         assert errors in ae.value.args[0]
     else:
         # There is an ldd_output, but no errors may be raised on unix hosts.
         test_spec.check_shared_libraries_closure(
-            prefix=None, ignored_libs=None, ldd_output=ldd_output
+            prefix=None, ignored_libs=ignored, ldd_output=ldd_output
         )