Darwin does not support gsplit-dwarf.
2018-08-18 Iain Sandoe <iain@sandoe.co.uk> gcc/ * config/darwin.c (darwin_override_options): If -gsplit-dwarf is set, emit a diagnostic that it is not supported and reset the option. * config/darwin.h (DRIVER_SELF_SPECS): Note that gsplit-dwarf is not supported and consume the option. (ASM_FINAL_SPEC): New. gcc/testsuite * g++.dg/debug/dwarf2/pr85302.C: Skip unsupported split DWARF test on Darwin. * g++.dg/debug/dwarf2/pr85302.C: Likewise. * gcc.dg/lto/pr83719_0.c: Likewise. From-SVN: r263645
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