PYTHON_BT2_BUILD_LIB_DIR = $(abs_top_builddir)/src/bindings/python/bt2/build/build_lib
PP = $(PYTHON_BT2_BUILD_LIB_DIR)
LLP = $(abs_top_builddir)/src/lib/.libs
-SPHINXBUILD = PYTHONPATH="$(PP)" LD_LIBRARY_PATH="$(LLP)" DYLD_LIBRARY_PATH="$(LLP)" $(PYTHON) -m sphinx
+
+# PATH is used as a replacement for LD_LIBRARY_PATH on Windows build
+# (CYGWIN, MINGW).
+# DYLD_LIBRARY_PATH is used a replacement for LD_LIBRARY_PATH on MacOSX build.
+SPHINXBUILD = PATH="$(LLP):$$PATH" PYTHONPATH="$(PP)" LD_LIBRARY_PATH="$(LLP)" DYLD_LIBRARY_PATH="$(LLP)" $(PYTHON) -m sphinx
SPHINX_SRC = $(wildcard $(SPHINX_SOURCE_DIR)/*.rst)
$(SPHINX_HTML_TARGET): $(SPHINX_SRC)