Hi,
I've been trying for 3 full days now to link a shared object library to my OOT module.
I am trying to link the libfec.so library in order to use the reed-solomon encoding and decoding functions.
As found on the internet i have made a FindFec.cmake file inside cmake/Modules as follows shown below.
I edited my CMakeLists.text in main directory adding find_package(Fec)
I added include dir to include_directories and Library to target_link_library in lib/CMakeLists.text
As shown below.
However whenever i cmake .. make sudo make install and sudo ldconfig if i run make tests or if i try to run python test from python IF a function from the library is used, and only in that case, an attribute not found error will show.
If i edit cpp test testing the class that is using the library function during compile time it will show that said function is not defined. i.e.:
CMakeFiles/test-AX100.dir/Encoder.cpp.o: nella funzione "Encoder::Encode(unsigned char*, int, char const*)":
Encoder.cpp:(.text+0x61): riferimento non definito a "encode_rs_8(unsigned char*, unsigned char*, int)"
collect2: error: ld returned 1 exit status
lib/CMakeFiles/test-AX100.dir/build.make:155: set di istruzioni per l'obiettivo "lib/test-AX100" non riuscito
make[2]: *** [lib/test-AX100] Errore 1
CMakeFiles/Makefile2:159: set di istruzioni per l'obiettivo "lib/CMakeFiles/test-AX100.dir/all" non riuscito
make[1]: *** [lib/CMakeFiles/test-AX100.dir/all] Errore 2
Makefile:140: set di istruzioni per l'obiettivo "all" non riuscito
make: *** [all] Errore 2
sadly it is in italian, however it says that reference to encode_rs_8() not defined.
While through python tests:
E
======================================================================
ERROR: test_001_t (__main__.qa_Msg_Encoder)
----------------------------------------------------------------------
Traceback (most recent call last):
File "qa_Msg_Encoder.py", line 35, in test_001_t
enc = AX100.Msg_Encoder("in1","out1")
AttributeError: 'module' object has no attribute 'Msg_Encoder'
----------------------------------------------------------------------
Ran 1 test in 0.000s
FAILED (errors=1)
Thanks for your support!
Massimo
########################################################################
# Find gnuradio build dependencies
########################################################################
find_package(CppUnit)
find_package(Doxygen)
find_package(Fec)
# Search for GNU Radio and its components and versions. Add any
# components required to the list of GR_REQUIRED_COMPONENTS (in all
# caps such as FILTER or FFT) and change the version to the minimum
# API compatible version required.
set(GR_REQUIRED_COMPONENTS RUNTIME)
find_package(Gnuradio "3.7.2" REQUIRED)
if(NOT CPPUNIT_FOUND)
message(FATAL_ERROR "CppUnit required to compile AX100")
endif()
include(GrPlatform) #define LIB_SUFFIX
include_directories(${Boost_INCLUDE_DIR} ${FEC_INCLUDE_DIR})
link_directories(${Boost_LIBRARY_DIRS})
list(APPEND AX100_sources
Msg_Encoder_impl.cc
Encoder.cpp
Golay.cpp
)
set(AX100_sources "${AX100_sources}" PARENT_SCOPE)
if(NOT AX100_sources)
MESSAGE(STATUS "No C++ sources... skipping lib/")
return()
endif(NOT AX100_sources)
add_library(gnuradio-AX100 SHARED ${AX100_sources})
target_link_libraries(gnuradio-AX100 ${Boost_LIBRARIES} ${GNURADIO_ALL_LIBRARIES} ${FEC_LIBRARY})
set_target_properties(gnuradio-AX100 PROPERTIES DEFINE_SYMBOL "gnuradio_AX100_EXPORTS")
if(APPLE)
set_target_properties(gnuradio-AX100 PROPERTIES
INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib"
)
endif(APPLE)
# Try to find FEC library and include path.
# Once done this will define
#
# FEC_INCLUDE_DIRS - where to find fec.h, etc.
# FEC_LIBRARIES - List of libraries when using libfec.
# FEC_FOUND - True if libfec found.
find_path(FEC_INCLUDE_DIR fec.h DOC "The directory where fec.h resides")
find_library(FEC_LIBRARY NAMES fec DOC "The libfec library")
if(FEC_INCLUDE_DIR AND FEC_LIBRARY)
set(FEC_FOUND 1)
set(FEC_LIBRARIES ${FEC_LIBRARY})
set(FEC_INCLUDE_DIRS ${FEC_INCLUDE_DIR})
else(FEC_INCLUDE_DIR AND FEC_LIBRARY)
set(FEC_FOUND 0)
set(FEC_LIBRARIES)
set(FEC_INCLUDE_DIRS)
endif(FEC_INCLUDE_DIR AND FEC_LIBRARY)
mark_as_advanced(FEC_INCLUDE_DIR)
mark_as_advanced(FEC_LIBRARY)
mark_as_advanced(FEC_FOUND)
if(NOT FEC_FOUND)
set(FEC_DIR_MESSAGE "libfec was not found. Make sure FEC_LIBRARY and FEC_INCLUDE_DIR are set.")
if(NOT FEC_FIND_QUIETLY)
message(STATUS "${FEC_DIR_MESSAGE}")
else(NOT FEC_FIND_QUIETLY)
if(FEC_FIND_REQUIRED)
message(FATAL_ERROR "${FEC_DIR_MESSAGE}")
endif(FEC_FIND_REQUIRED)
endif(NOT FEC_FIND_QUIETLY)
endif(NOT FEC_FOUND)