From 06709de2e9f4a4c66b5c7e2f5b245ea7aa4ed5bd Mon Sep 17 00:00:00 2001
From: Jeff Ahrenholz <siliconja@users.noreply.github.com>
Date: Wed, 10 Oct 2018 12:26:21 -0700
Subject: [PATCH]  add --enable-vnodedonly configure flag; make Python optional

---
 configure.ac      | 27 ++++++++++++++++++++++-----
 netns/Makefile.am |  4 ++++
 ns3/Makefile.am   |  5 +++++
 3 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/configure.ac b/configure.ac
index da5df8dc..1c2d46dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -43,17 +43,30 @@ AC_ARG_ENABLE([gui],
 		[build and install the GUI (default is yes)])],
 		[], [enable_gui=yes])
 AC_SUBST(enable_gui)
+
+AC_ARG_ENABLE([python],
+	       [AS_HELP_STRING([--enable-python[=ARG]],
+		[build and install the python bindings (default is yes)])],
+		[], [enable_python=yes])
+AC_SUBST(enable_python)
+if test "x$enable_python" = "xyes" ; then
+  want_python=yes
+else
+  want_python=no
+fi
 AC_ARG_ENABLE([daemon],
 	       [AS_HELP_STRING([--enable-daemon[=ARG]],
 		[build and install the daemon with Python modules
 		 (default is yes)])],
 		[], [enable_daemon=yes])
 AC_SUBST(enable_daemon)
-AC_ARG_ENABLE([docs],
-	      [AS_HELP_STRING([--enable-docs[=ARG]],
-		[build documentation (default is no)])],
-		[], [enable_docs=no])
-AC_SUBST(enable_docs)
+
+AC_ARG_ENABLE([vnodedonly],
+	       [AS_HELP_STRING([--enable-vnodedonly[=ARG]],
+		[only try to build vnoded and vcmd container utils
+		 (default is no)])],
+		[enable_vnodedonly=yes], [enable_vnodedonly=no])
+AC_SUBST(enable_vnodedonly)
 
 SEARCHPATH="/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/sbin:/usr/local/bin"
 
@@ -141,6 +154,9 @@ if test "x$enable_daemon" = "xyes"; then
     AC_MSG_ERROR([Python bindings require Python development headers (try installing your 'python-devel' or 'python-dev' package)]))
   CFLAGS=$CFLAGS_save
   CPPFLAGS=$CPPFLAGS_save
+fi
+if [ test "x$enable_daemon" = "xyes" || test "x$enable_vnodedonly" = "xyes" ] ; then
+  want_linux_netns=yes
   PKG_CHECK_MODULES(libev, libev,
     AC_MSG_RESULT([found libev using pkgconfig OK])
     AC_SUBST(libev_CFLAGS)
@@ -204,6 +220,7 @@ AM_CONDITIONAL(WANT_PYTHON, test x$want_python = xyes)
 AM_CONDITIONAL(WANT_NETNS, test x$want_linux_netns = xyes)
 AM_CONDITIONAL(WANT_INITD, test x$with_startup = xinitd)
 AM_CONDITIONAL(WANT_SYSTEMD, test x$with_startup = xsystemd)
+AM_CONDITIONAL(WANT_VNODEDONLY, test x$enable_vnodedonly = xyes)
 
 if test $cross_compiling = no; then
   AM_MISSING_PROG(HELP2MAN, help2man)
diff --git a/netns/Makefile.am b/netns/Makefile.am
index f3001ead..d000cb8e 100644
--- a/netns/Makefile.am
+++ b/netns/Makefile.am
@@ -30,6 +30,7 @@ netns_SOURCES = $(SRC_NETNS)
 # this triggers automake to run setup.py for building the Python libraries
 #   actual library names are netns.so and vcmd.so
 #   SOURCES line prevents 'make dist' from looking for a 'libnetns.c' file
+if WANT_PYTHON
 noinst_LIBRARIES = libnetns.a
 libnetns_a_SOURCES = netnsmodule.c vcmdmodule.c
 libnetns.a:
@@ -60,6 +61,9 @@ clean-local-check:
 distclean-local:
 	-rm -rf core_netns.egg-info
 
+endif
+# endif WANT_PYTHON
+
 # extra cruft to remove
 DISTCLEANFILES = Makefile.in MANIFEST
 
diff --git a/ns3/Makefile.am b/ns3/Makefile.am
index caa0c1c0..62086e82 100644
--- a/ns3/Makefile.am
+++ b/ns3/Makefile.am
@@ -7,6 +7,8 @@
 # Makefile for building corens3 components.
 #
 
+if WANT_PYTHON
+
 SETUPPY	= setup.py
 SETUPPYFLAGS = -v
 
@@ -47,3 +49,6 @@ DISTCLEANFILES = Makefile.in
 
 # files to include with distribution tarball
 EXTRA_DIST = LICENSE $(SETUPPY) corens3 examples
+
+endif
+# endif WANT_PYTHON