build: make graphviz optional for building documentation
Change-Id: I5434bbef22c840341623bff16f9e8de129249be2
diff --git a/wscript b/wscript
index aef4320..b55ed4a 100644
--- a/wscript
+++ b/wscript
@@ -92,6 +92,7 @@
conf.env.WITH_OTHER_TESTS = conf.options.with_other_tests
conf.find_program('bash', var='BASH')
+ conf.find_program('dot', var='DOT', mandatory=False)
conf.check_cfg(package='libndn-cxx', args=['--cflags', '--libs'], uselib_store='NDN_CXX',
pkg_config_path=os.environ.get('PKG_CONFIG_PATH', '%s/pkgconfig' % conf.env.LIBDIR))
@@ -267,6 +268,7 @@
target=['docs/doxygen.conf',
'docs/named_data_theme/named_data_footer-with-analytics.html'],
VERSION=VERSION,
+ HAVE_DOT='YES' if bld.env.DOT else 'NO',
HTML_FOOTER='../build/docs/named_data_theme/named_data_footer-with-analytics.html' \
if os.getenv('GOOGLE_ANALYTICS', None) \
else '../docs/named_data_theme/named_data_footer.html',