Improve package reproducibility

Packages using CMake often use file(GLOB ...) to retrieve a list of
source files. As this is based on readdir(), the resulting file list
is unsorted. A common use case is to pass this list directly to
add_executable or add_library. But as the order is unpredictable, the
binaries are not reproducible (because the order in which the objects
are linked will vary).

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824263

src/algorithms/signal_source/adapters/CMakeLists.txt

@@ -167,6 +167,7 @@ endif(ARCH_64BITS)
 add_definitions(-DGNSSSDR_INSTALL_DIR="${CMAKE_INSTALL_PREFIX}")
 
 file(GLOB SIGNAL_SOURCE_ADAPTER_HEADERS "*.h")
+list(SORT SIGNAL_SOURCE_ADAPTER_HEADERS)
 add_library(signal_source_adapters ${SIGNAL_SOURCE_ADAPTER_SOURCES} ${SIGNAL_SOURCE_ADAPTER_HEADERS})
 source_group(Headers FILES ${SIGNAL_SOURCE_ADAPTER_HEADERS})
 target_link_libraries(signal_source_adapters signal_source_gr_blocks

src/algorithms/signal_source/gnuradio_blocks/CMakeLists.txt

@@ -35,6 +35,7 @@ include_directories(
 )
 
 file(GLOB SIGNAL_SOURCE_GR_BLOCKS_HEADERS "*.h")
+list(SORT SIGNAL_SOURCE_GR_BLOCKS_HEADERS)
 add_library(signal_source_gr_blocks ${SIGNAL_SOURCE_GR_BLOCKS_SOURCES} ${SIGNAL_SOURCE_GR_BLOCKS_HEADERS})
 source_group(Headers FILES ${SIGNAL_SOURCE_GR_BLOCKS_HEADERS})
 target_link_libraries(signal_source_gr_blocks signal_source_lib ${GNURADIO_RUNTIME_LIBRARIES} ${Boost_LIBRARIES})

src/algorithms/signal_source/libs/CMakeLists.txt

@@ -26,5 +26,6 @@ include_directories(
 )
 
 file(GLOB SIGNAL_SOURCE_LIB_HEADERS "*.h")
+list(SORT SIGNAL_SOURCE_LIB_HEADERS)
 add_library(signal_source_lib ${SIGNAL_SOURCE_LIB_SOURCES} ${SIGNAL_SOURCE_LIB_HEADERS})
 source_group(Headers FILES ${SIGNAL_SOURCE_LIB_HEADERS})