Date: Mon, 14 Nov 2016 22:55:05 -0700 From: Gary Aitken <freebsd@dreamchaser.org> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: gdb / dwarf issue Message-ID: <ae0716b6-2f88-f6d1-2500-4fb860fc5b54@dreamchaser.org>
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I'm having trouble getting gdb to agree to look at symbols:
$ cd /usr/ports/graphics/rawtherapee
$ make showconfig
===> The following configuration options are available for rawtherapee-4.2_3:
OPENMP=on: Enable multicore processing using OpenMP
OPTIMIZED_CFLAGS=off: Use extra compiler optimizations (requires SSE support)
$ file /usr/local/bin/rawtherapee
/usr/local/bin/rawtherapee: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD 10.3, not stripped
$ gdb /usr/local/bin/rawtherapee
GNU gdb 6.1.1 [FreeBSD]
<snip>
This GDB was configured as "amd64-marcel-freebsd"...Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in module /usr/local/bin/rawtherapee]
(gdb) break main
No symbol table is loaded. Use the "file" command.
My search found implications that a single dependent library with
optimization turned on could cause this to happen; is that what I'm
seeing here, or something else?
If so, is there an easy way to find out which libraries have compiler
optimization turned on that causes this?
Or do I need to be running something else like the gdb66 port?
Or?...
Thanks,
Gary
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