Forcing G++ (GCC) to a specific libstdc++ version (GLIBCXX_*) -


i'm trying build binary gcc 4.9.0 backwards-compatible against libstdc++. according gcc's abi policy , guidelines , options controlling c++ dialect, command line option -fabi-version should trick; however, no matter version set, still imports of symbols version newer desired, this:

$ objdump -t binary | grep glibcxx_3.4.20 00000000      df *und*  00000000  glibcxx_3.4.20 _zst24__throw_out_of_range_fmtpkcz

i've tried -fabi-version=1 -fabi-version=5 (abi version 5 corresponds gcc 4.6, guaranteed present on target system), imports keep winding in resulting files.

how fix this? going old gcc version not option me other reasons.


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