Build error

GNU Radio
1

hi,
when i install a new block ,try “make”,i got these errors:
CMakeFiles/test-scramble.dir/test_scramble.cc.o: In function
boost::filesystem::operator/(boost::filesystem::path const&, boost::filesystem::path const&)': test_scramble.cc:(.text._ZN5boost10filesystemdvERKNS0_4pathES3_[boost::filesystem::operator/(boost::filesystem::path const&, boost::filesystem::path const&)]+0x29): undefined reference toboost::filesystem::path::operator/=(boost::filesystem::path const&)’
CMakeFiles/test-scramble.dir/test_scramble.cc.o: In function main': test_scramble.cc:(.text.startup+0x8a): undefined reference toboost::filesystem::detail::current_path(boost::system::error_code*)’
test_scramble.cc:(.text.startup+0xdc): undefined reference to
boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)' test_scramble.cc:(.text.startup+0xf8): undefined reference toboost::filesystem::detail::create_directory(boost::filesystem::path
const&, boost::system::error_code*)’

what does this mean?how to solve it?
BZS

2

BZS,

This error indicates that you aren’t linking against the boost
filesystem
library.

In the CMakeLists.txt file within the “lib” directory of the custom
block,
there will be a section that looks similar to this:

target_link_libraries(
${GNURADIO_RUNTIME_LIBRARIES}

)

This indicates that

3

(please excuse the previous incomplete message)

You will need to update the target_link_libraries section to add the
following:

${Boost_FILESYSTEM_LIBRARY}

This will link against the boost filesystem library and resolve the
error
you’re receiving.

  • Marc