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[...]
erlc -W  +debug_info +warn_obsolete_guard -o../ebin tcl2erl.erl
erlc -W  +debug_info +warn_obsolete_guard -o../ebin tool_utils.erl
./tool_utils.erl:101: Warning: regexp:gsub/3: the regexp module is deprecated (will be removed in R15A); use the re module instead
erlc -W  +debug_info +warn_obsolete_guard -o../ebin tool_file_dialog.erl
erlc -W  +debug_info +warn_obsolete_guard -o../ebin gse.erl
erl -pa ../ebin -s gs_make -s erlang halt -noshell
make[4]: *** [gstk_generic.hrl] Error 1
make[4]: Leaving directory `/build/buildd/erlang-13.b.3-dfsg/lib/gs/src'
make[3]: *** [opt] Error 2
make[3]: Leaving directory `/build/buildd/erlang-13.b.3-dfsg/lib/gs'
make[2]: *** [opt] Error 2
make[2]: Leaving directory `/build/buildd/erlang-13.b.3-dfsg/lib'
make[1]: *** [libs] Error 2
make[1]: Leaving directory `/build/buildd/erlang-13.b.3-dfsg'
make: *** [build-stnd-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2