[Bug gdb/31088] gdb requires build directories to exist

["mark at klomp dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31088

--- Comment #2 from Mark Wielaard <mark at klomp dot org> ---
In particular the latest draft (note draft! can still change!)
https://snapshots.sourceware.org/dwarfstd/dwarf-spec/latest/
says:

--- DRAFT ---

A DW_AT_comp_dir attribute whose value is a null-terminated string containing
the current working directory of the compilation command that produced this
compilation unit in whatever form makes sense for the host system.

If a relative path is used in DW_AT_comp_dir, it will be relative to the
location of the linked image containing the DW_AT_comp_dir entry.

In some cases a producer may allow the user to specify a relative path for
DW_AT_comp_dir. There are a few cases in which this is useful, but in general
using a relative path for DW_AT_comp_dir is discouraged as it will not work
well in many cases including the following: different relative paths are used
within the same build; the build system creates multiple linked images in
different directories; the final linked image is moved before being debugged; .o
files that need to be debugged directly.

--- DRAFT ---

So that seems to imply that you really shouldn't use relative paths (like "."),
unless you can make sure that when the image or source files are moved (or the
DWARF is put into a separate .debug file) like when doing make install, all the
relative are updated/resolved/rewritten.

-- 
You are receiving this mail because:
You are on the CC list for the bug.