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

Subject: Re: [Boost-users] Static linking program_options on ARM
From: Vladimir Prus (vladimir.prus_at_[hidden])
Date: 2015-09-06 14:06:17

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<char,
> std::char_traits<char>, std::allocator<char> > const&
> boost::program_options::validators::get_single_
> string<char>(std::vector<std::basic_string<char,
> std::char_traits<char>, std::allocator<char> >,
> std::allocator<std::basic_string<char, std::char_traits<char>,
> std::allocator<char> > > > 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.

- Volodya

>
> Thank you
>