Note this is just to keep the gcc-patches archive up to date. I originally posted this reply but the attached config.log file was too big. It was also sent directly to Jonathan, and he replied. So I canceled the gcc-patches post, and I'm sending out this one with a bzip2's config.log:
On Tue, Dec 01, 2020 at 09:10:30PM +0000, Jonathan Wakely wrote: > On Tue, 1 Dec 2020 at 19:13, Michael Meissner via Libstdc++ > <libstd...@gcc.gnu.org> wrote: > > > > On Tue, Dec 01, 2020 at 04:04:30PM +0000, Jonathan Wakely wrote: > > > On 01/12/20 15:10 +0000, Jonathan Wakely wrote: > > > >On 30/11/20 16:30 -0500, Michael Meissner via Libstdc++ wrote: > > > >>Jonathan, could you send a fresh set of patches (or at least > > > >>replacements)? I > > > >>tried installing the patches on a master branch I checked out this > > > >>morning, and > > > >>I got two rejects: > > > > > > > >I don't understand why those chunks failed, but I'll rebase and send a > > > >new patch ASAP. > > > > > > Here's the rebased patch, with regenerated autoconf files and a fix > > > for the <ext/numeric_limits.h> header. I'd changed it since sending > > > the previous patch, and broke the "there's more than one long double" > > > case (i.e. the _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT case). > > > > Unfortunately this patch DOES NOT work at all. > > > > If I build a compiler with the configure option: > > --with-long-double-format=ieee > > > > And I compile this simple program: > > > > #include <iostream> > > > > int main(int argc, char *argv[], char *envp[]) > > { > > std::cout << "Hello World!\n"; > > return 0; > > } > > > > I get all of these errors: > > It works fine for me (see below). I think your symptoms are due to > using a glibc that doesn't support the new long double, and so > libstdc++ support for it is also disabled. You need at least glibc > 2.32 for the libstdc++ changes to be enabled. I am using the Advance Toolchain which includes GLIBC 2.32, which has the necessary support. I will include the config.log as an attachment. Note, I am also using the patches I submitted around November 19th. In particular, there is the patch that maps long double built-in names if long double is IEEE 128-bit: https://gcc.gnu.org/pipermail/gcc-patches/2020-November/559659.html I used the patch that tries to fix some problems with gnu attributes: https://gcc.gnu.org/pipermail/gcc-patches/2020-November/559657.html I used the patch that fixes up the gnu attributes use in libgcc: https://gcc.gnu.org/pipermail/gcc-patches/2020-November/559660.html I used the patch that adds float128 <-> Decimal conversions: https://gcc.gnu.org/pipermail/gcc-patches/2020-November/559661.html I used the patch that allows -mabi={ieee,ibm}longdouble to override the default configuration for long double == 64 bits, without having to use the -mlong-double-64 option as well: https://gcc.gnu.org/pipermail/gcc-patches/2020-November/559660.html -- Michael Meissner, IBM IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
libstdc++-v3-config.log.bz2
Description: BZip2 compressed data