On Tue, May 07, 2024 at 02:39:01PM +0100, Ian Abbott wrote: > The configure script of GDB (version 7.6 or later) has a --with-lzma option
That's definitely old enough, so we can rely on the option to be available. gdb is always a bit tricky because we need to support multiple versions. > that controls whether GDB will use liblzma or not. (It is needed to for > reading .gnu_debuginfo sections from ELF files, if they are present.) By > default (if not explicitly enabled or disabled), it will use liblzma if it > is detected at build time. > > Currently, PTXdist does not configure GDB with any --with-lzma value, so > whether or not it is configured to use liblzma depends on whether some > version of XZ has previously been built or not. > > If GDB gets automatically configured to use liblzma, but the XZ package is > not to be installed (perhaps there is a previous build of XZ in the > platform's sysroot-target), then there will be a run-time error when running > GDB due to the missing library. It also means that the build of GDB may not > be reproducible. > > It seems to me that PTXdist should have a configuration option to choose > whether GDB should be built with liblzma support or not (and possibly a > configuration option to select whether the GDB version is 7.6 or later, > defaulting to true). The default could depend on > PTXCONF_TARGET_MINI_DEBUGINFO. If binaries have a .gnu_debuginfo section > then we probably want GDB to be able to use it! Right, gdb should definitely be able to read .gnu_debuginfo sections. I just never noticed this because I always use gdbserver. As you probably noticed by now, depending on PTXCONF_TARGET_MINI_DEBUGINFO does not work because it is defined in the platformconfig and gdb is not. > I'll attempt to knock up a patch for it. I appreciate it. The gdb package has seen little updated in the past because I don't actually use it myself. So fixes from someone who actually uses it are welcome. Michael -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
