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GSPLIT DWARF ICECC FAILURE PC
> I don't know how well they work, but we could build and provide binaries, and add a test whether ccache supports the dwo files.Īctually, I have been using this version of ccache on my local PC for a few days, and it seems to work well. The clang compiler codebase has some split dwarf support, but I don't know what state that support is in.> Note that a mozilla contributor has submitted patches to. The intel compiler documents that binutils-2.24+,gdb-7.6.1+ are required. Joining gcc in the party, the intel (version 16) compiler supports -gsplit-dwarf. Where gcc/ g++ are version 4.8, the binutils trunk ( cvs -z 9 -d co binutils) has been used configured with -enable-gold=default, and finally using gdb version 7.6 which can read the split debug info. Gcc -Wl,-index-gdb main.o d1/t1.o d2/t2.o -o main Gcc -gsplit-dwarf -gdwarf-4 -c -o d1/t1.o d1/t1.c This fission work was mentioned in discussion of a bugzilla report on this relocation truncation error:Īn example of the use of this split debug files is: g++ -gsplit-dwarf -gdwarf-4 -c -o main.o main.cpp On the other hand it looks like work on (1) and (2) is in available if a bleeding edge toolchain is used, part of the fission dwarf/binutils/gcc work described here: Initially it appeared that the binutils gold linker was capable of building large -g shared libs, providing a solution for (3) above, however, it turns out that is because of a lack of error checking. Print "build-id for '$binary': $buildid\n" Where copyDebugAndStrip is the following perl code: #!/usr/bin/perl Objcopy -add-gnu-debuglink=bug uWithDebugLink Objcopy -only-keep-debug uWithDebugLink bug Here's a sample command line sequence using both the -build-id and -add-gnu-debuglink methods: g++ -g -c -o u.o u.cpp Sample commands to generate separate debug files for an executable
GSPLIT DWARF ICECC FAILURE CODE
However, the reason I'm looking at this at all is with the hope of being able to build all of our product code with -g. I've included details of such commands below for reference. To create the debug info files I've used objcopy and strip. Reading symbols from /home/peeterj/build-id/uWithDebugLink.Reading symbols from /home/peeterj/build-id/. Reading symbols from /home/peeterj/build-id/uWithBuildId.Reading symbols from /home/peeterj/build-id/.build-id/2d/. Here's two gdb fragments that show the debugger finding the debug info in the non-standard locations, using the build-id and debug-link methods respectively: (gdb) set debug-file-directory.