Hi all, Thanks for the feedback.
I'm looking at option (2), modifying `libs/libc/symtab/symtab_find(ordered)?byname.c` to strip a leading underscore if a new Kconfig setting (SYMTAB_DECORATED in binfmt/Kconfig) is set. I considered modifying the ELF loader, but the kernel module system needs the same adjustment when making the same calls. The NXFLAT loader 'benefits' too, but I think toolchains that prefix underscores and toolchains that support the NXFLAT toolchain don't overlap. -- bje On Mon, Mar 15, 2021 at 12:40 AM Gregory Nutt <spudan...@gmail.com> wrote: > > Which I think is insufficient. Probably some of the support was removed? > > > No.. It is just that there was no support for loadable modules for those > older Cygwin toolchains. The underscore has not been used with Cygwin > since around 2015 so I think would be safe to just remove the > CONFIG_SIM_CYGWIN_DECORATED configuration. > > In your case, I think you have two options: > > 1) Write a tool to rename all of the symbols in the library to remove > the leading underscore (using objcopy --redefine-syms), or > > 2) Modify the elf loader[s] to conditionally prepend the '_' character > before looking up the symbol by name. > >
