Autoconfigure

[Nick Burkitt]

Okay, not strictly a dbus-cxx question, but I need the answer as it applies to building libdbus-cxx. 

The short version is that I need to define an additional symbol on the compiler command line (-D_GLIBCXX_USE_CXX11_ABI=0). Someday I may learn enough about autoconfigure to be know which line in which file to change to achieve this, but it won't be anytime soon.

Help?

[Robert Middleton]

If you're using autotools to build, I think you provide it as an environment variable, e.g.

CXXFLAGS=-D_GLIBCXX_USE_CXX11_ABI=0 ./configure

or I think autotools also lets you do it when you run configure

./configure CXXFLAGS=-D_GLIBCXX_USE_CXX11_ABI=0

./configure --help will print out some information on this.

(if you want to try the CMake build you can find it here: https://sourceforge.net/p/dbus-cxx/code/HEAD/tree/branches/dbus-cxx-2/)

-Robert Middleton

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[Nick Burkitt]

Hi Robert.

Thanks - I tried the first suggestion first. It worked, so I didn't try any of the others. :-)

I ran into this issue when upgrading from Ubuntu 14.04 to 16.04. The GCC major version changed from 4 to 5, and the default C++11 ABI usage also changed from the "old" to the "new." Unfortunately, it appears that the packages distributed with 16.04 were compiled using the old ABI. That means building from source now has an extra tripping hazard. 

Thanks!

-Nick