On Wed, 5 Feb 2020, Sandra Loosemore wrote: > This patch is for PR 79193 and 88999, problems where libstdc++ is > mis-configuring itself when building for a bare-metal target because it thinks > it can link programs without pulling in the BSP that provides low-level I/O > support. (Specifically, this was observed on nios2-elf with Newlib and GDB > semihosting.) It'll build just fine if it recognizes that it can only compile > programs and not link them, but it's confused because using an empty program > to test for ability to link succeeds. > > Is this configure change OK, and suitable for stage 4? > > BTW, I did run autoconf in every subdirectory that contains a configure.ac, > but it appears only libstc++-v3 actually uses this test; all the other > regenerated configure scripts were unchanged.
There's some problem with that regeneration, then; every directory where configure.ac mentions GCC_NO_EXECUTABLES should have a resulting change (I tested regenerating in libgcc/ with this patch applied and got such a change, for example). -- Joseph S. Myers jos...@codesourcery.com
