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26ecc55c02
After the recent GNU linker script changes, the following warning is emitted many times during the OVMF build: BFD: <...>: warning: Empty loadable segment detected, is this intentional ? This is caused by the fact that, now that the section layout has changed somewhat, the .eh_frame section is assigned an ELF segment of its own, which ends up with no contents at all after we strip the .eh_frame section from the output. (Note that the program headers that contain the segment information are completely irrelevant to us since the PE/COFF conversion does not rely on them.) Since we only retain the .eh_frame data for external debugging, and not for things like stack unwinding or generating backtraces at runtime, we can remedy the situation by passing -fno-asynchronous-unwind-tables on the GCC command line. This option instructs the compiler to emit the unwind data into a debug section called .debug_frame instead of into .eh_frame. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Build-tested-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18217 6f19259b-4bc3-4df7-8a09-765794883524