Re: [Boost-users] Static linking program_options on ARM

On Sun, Sep 6, 2015 at 8:06 PM, Vladimir Prus wrote:

On 06-Sep-15 2:58 AM, Pau Garcia i Quiles wrote:

...

Hello,

I am having trouble when linking Boost::Program_Options statically on Linux ARM 32-bit: it spits an error about a duplicate symbol for a guard-variable.

It works fine on Linux ARM 32-bit (same compiler) if using shared libraries, and also on Linux x86-64 both with static and shared libraries.

I can reproduce the problem with the examples included in the libs/program_options/examples: real.cpp and custom_syntax.cpp compile and run fine but first.cpp, multiple_sources.cpp options_description.cpp, option_groups.cpp and regex.cpp fail:

$ armv7a-openelec-linux-gnueabi-g++ -std=c++11 -o option_groups option_groups.cpp -L $SYSROOT/usr/lib -lboost_program_options

/tmp/cch3i9Yf.ltrans0.ltrans.o:(.bss._ZGVZN5boost15program_options10validators17get_single_stringIcEERKSbIT_St11char_traitsIS3_ESaIS3_EERKSt6vectorIS7_SaIS7_EEbE5empty[_ZGVZN5boost15program_options10validators17get_single_stringIcEERKSbI T_St11char_traitsIS3_ESaIS3_EERKSt6vectorIS7_SaIS7_EEbE5empty]+0x0): multiple definition of `guard variable for std::basic_string const& boost::program_options::validators::get_single_ string<char>(std::vector, std::allocator > > const&, bool)::empty'

...

Has anyone faced something like this?

Hi Pau,

I did not see such an error before, and I suspect it might be a bug in your toolchain. What version armv7-openelec-linux-gnueabi-g++ is, and who built that version? Maybe they might be more helpful with this error.

I built it from scratch using OpenElec 6.0: https://github.com/pgquiles/OpenELEC.tv/tree/openelec-6.0-s82plus-from-minix... I will check with OpenElec upstream, thank you. -- Pau Garcia i Quiles http://www.elpauer.org (Due to my workload, I may need 10 days to answer)