Fix race during build of python bindings

The CMake documentation says about add_custom_command that the output must
not be used as dependency in more than one target, but this was the case
here: Both the doc_i target and the SWIG target depended on ftdi1_doc.i.
Make the SWIG target depend on doc_i instead.

This fixes that ftdi1_doc.i was built twice with parallel builds, leading
to random errors.

Signed-off-by: Fabian Vogt <fvogt@suse.de>

diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 5b6f420..1a8142b 100644 (file)
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -25,7 +25,7 @@ link_directories ( ${CMAKE_CURRENT_BINARY_DIR}/../src )
 if ( DOCUMENTATION )
   set(CMAKE_SWIG_FLAGS -DDOXYGEN=${DOXYGEN_FOUND})
   # manually add dependency for new cmake / swig versions
-  set_property(SOURCE ftdi1.i PROPERTY DEPENDS ftdi1_doc.i)
+  set_property(SOURCE ftdi1.i PROPERTY DEPENDS doc_i)
 endif()
 if(NOT CMAKE_VERSION VERSION_LESS 3.8.0)
   swig_add_library ( ftdi1 LANGUAGE python SOURCES ftdi1.i )