Can it work cross different GCC version?

[quocnhat]

Hello @wheybags
You said that You have built binary libs on DEBIAN 9 (GLIBC 2.24) and run on UBUNTU 12.04( GLIB 2.14) successfully. I know that the GCC version is different on those two systems. Do you have any tricks or something? Because I fail on building libs on Ubuntu 18.04 and expect to run on CentOS7 due to GCC version. Thank you

[saierd]

The headers in this repository only affect the glibc symbols. You probably still have problems with libgcc and libstdc++ (if using C++), which get linked dynamically by default. Both of them can be linked statically by using the flags -static-libgcc and/or -static-libstdc++.

Note that when using C++ the default libstdc++ from a newer system might have dependencies on later versions of the glibc, as it is mentioned in the readme. This is a hard problem to circumvent, as it requires to build your own version of libstdc++. See #20 for further discussion.

[quocnhat]

Thank you for your response.
I've tried #20 . I choose to use the first solution ( rebuild project on old Ubuntu 18.04 gcc version 4.9.3, CentOS 7 uses gcc 4.8.5, it seems compatible together) and gcc errors gone (no error std:__cxx11...).
But still exist some errors due to glibc (after compilling with this magic header file glibc2.17):
undefined reference to _ZGVdN8vv_powf@GLIBC_2.22' undefined reference to _ZGVcN4v_exp@GLIBC_2.22'
undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'
I 've spent for weeks for this bug but did not help. Please give some advice, many thanks.