[Commit-gnuradio] [gnuradio] 01/06: modtool: added skipping of lib/ and swig/ if sources list is empty

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trondeau pushed a commit to branch maint
in repository gnuradio.

commit 9fb5487a8958e26744ee24dced92d2635fc17136
Author: Marcus Müller <address@hidden>
Date:   Wed Feb 12 11:05:13 2014 +0100

    modtool: added skipping of lib/ and swig/ if sources list is empty
---
 gr-utils/python/modtool/gr-newmod/lib/CMakeLists.txt  | 6 ++++++
 gr-utils/python/modtool/gr-newmod/swig/CMakeLists.txt | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/gr-utils/python/modtool/gr-newmod/lib/CMakeLists.txt 
b/gr-utils/python/modtool/gr-newmod/lib/CMakeLists.txt
index 3125941..a535ead 100644
--- a/gr-utils/python/modtool/gr-newmod/lib/CMakeLists.txt
+++ b/gr-utils/python/modtool/gr-newmod/lib/CMakeLists.txt
@@ -28,6 +28,12 @@ link_directories(${Boost_LIBRARY_DIRS})
 list(APPEND howto_sources
 )
 
+set(howto_sources "${howto_sources}" PARENT_SCOPE)
+if(NOT howto_sources)
+       MESSAGE(STATUS "No C++ sources... skipping lib/")
+       return()
+endif(NOT howto_sources)
+
 add_library(gnuradio-howto SHARED ${howto_sources})
 target_link_libraries(gnuradio-howto ${Boost_LIBRARIES} 
${GNURADIO_RUNTIME_LIBRARIES})
 set_target_properties(gnuradio-howto PROPERTIES DEFINE_SYMBOL 
"gnuradio_howto_EXPORTS")
diff --git a/gr-utils/python/modtool/gr-newmod/swig/CMakeLists.txt 
b/gr-utils/python/modtool/gr-newmod/swig/CMakeLists.txt
index 9aa1c51..5810b6c 100644
--- a/gr-utils/python/modtool/gr-newmod/swig/CMakeLists.txt
+++ b/gr-utils/python/modtool/gr-newmod/swig/CMakeLists.txt
@@ -18,6 +18,14 @@
 # Boston, MA 02110-1301, USA.
 
 ########################################################################
+# Check if there is C++ code at all
+########################################################################
+if(NOT howto_sources)
+       MESSAGE(STATUS "No C++ sources... skipping swig/")
+       return()
+endif(NOT howto_sources)
+
+########################################################################
 # Include swig generation macros
 ########################################################################
 find_package(SWIG)