[master] fixed test error due to missing DYLD path for MacOS.

patch reviewed on jabber.

src/lib/python/isc/log/tests/Makefile.am

@@ -2,8 +2,16 @@ PYCOVERAGE_RUN = @PYCOVERAGE_RUN@
 PYTESTS = log_test.py
 EXTRA_DIST = $(PYTESTS) log_console.py.in console.out check_output.sh
 
+# If necessary (rare cases), explicitly specify paths to dynamic libraries
+# required by loadable python modules.
+LIBRARY_PATH_PLACEHOLDER =
+if SET_ENV_LIBRARY_PATH
+LIBRARY_PATH_PLACEHOLDER += $(ENV_LIBRARY_PATH)=$(abs_top_builddir)/src/lib/log/.libs:$(abs_top_builddir)/src/lib/util/.libs:$(abs_top_builddir)/src/lib/exceptions/.libs:$$$(ENV_LIBRARY_PATH)
+endif
+
 # test using command-line arguments, so use check-local target instead of TESTS
 check-local:
+	$(LIBRARY_PATH_PLACEHOLDER) \
 	env PYTHONPATH=$(abs_top_srcdir)/src/lib/python:$(abs_top_builddir)/src/lib/python:$(abs_top_builddir)/src/lib/python/isc/log \
 	$(abs_srcdir)/check_output.sh $(abs_builddir)/log_console.py $(abs_srcdir)/console.out
 if ENABLE_PYTHON_COVERAGE
@@ -13,6 +21,7 @@ if ENABLE_PYTHON_COVERAGE
 endif
 	for pytest in $(PYTESTS) ; do \
 	echo Running test: $$pytest ; \
-	env PYTHONPATH=$(abs_top_srcdir)/src/lib/python:$(abs_top_builddir)/src/lib/python:$(abs_top_builddir)/src/lib/python/isc/log \
+	$(LIBRARY_PATH_PLACEHOLDER) \
+	env PYTHONPATH=$(abs_top_srcdir)/src/lib/python:$(abs_top_builddir)/src/lib/python:$(abs_top_builddir)/src/lib/python/isc/log:$(abs_top_builddir)/src/lib/log/python/.libs \
 	$(PYCOVERAGE_RUN) $(abs_srcdir)/$$pytest || exit ; \
 	done