autoconf build system : make osc test program optional

Makefile.am

@@ -33,14 +33,17 @@ endif
 
 # SUBDIRS += hidapi_parser
 SUBDIRS += hidparsertest
-SUBDIRS += hidapi2osc
 SUBDIRS += hidtest
 
 
 if BUILD_TESTGUI
 SUBDIRS += testgui
 endif
 
+if BUILD_TESTOSC
+SUBDIRS += hidapi2osc
+endif
+
 EXTRA_DIST = udev doxygen
 
 dist_doc_DATA = \

README.txt

@@ -10,7 +10,8 @@ In addition, a CMake build system has been made.
 
 Some test examples are available:
 * hidparsertest will list all devices and optionally open one, displaying the element information, and the incoming data
-* hidapi2osc will send out the data via OSC (OpenSoundControl), and provides an OSC interface for listing, opening and closing devices (see the supercollider script for testing the interface)
+* hidapi2osc will send out the data via OSC (OpenSoundControl), and provides an OSC interface for listing, opening and closing devices (see the supercollider script for testing the interface), to enable building this, use the CMake build system, or pass the --enable-testosc flag to the configure script:
+$ ./configure --enable-testosc
 
 [1] https://github.com/sensestage/hidapi
 [2] https://github.com/tonyrog/hidapi

configure.ac

@@ -217,12 +217,23 @@ fi
 
 AC_SUBST(LTLDFLAGS)
 
-PKG_CHECK_MODULES( LIBLO, liblo)
-
+# Test OSC
+AC_ARG_ENABLE([testosc],
+	[AS_HELP_STRING([--enable-testosc],
+		[enable building of test OSC (default n)])],
+	[testosc_enabled=$enableval],
+	[testosc_enabled='no'])
+AM_CONDITIONAL([BUILD_TESTOSC], [test "x$testosc_enabled" != "xno"])
+
+# make osc example program optional
+if test "x$testosc_enabled" != "xno"; then
+  PKG_CHECK_MODULES( LIBLO, liblo)
+  AC_CONFIG_FILES([hidapi2osc/Makefile])
+fi
+
 AC_CONFIG_FILES([Makefile \
 	hidtest/Makefile \
 	hidparsertest/Makefile \
-	hidapi2osc/Makefile \
 	libusb/Makefile \
 	linux/Makefile \
 	mac/Makefile \