Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Teach libstdc++ about logl(3).

The logl(3) family of functions were implemented in r251292.
Define them in libstdc++'s configuration so they can be used.

Reviewed by: dim

Regenerate libstdc++'s config.h, synchronizing it with our current
almost-C99 headers.

MFC after: 1 week

Turn on TLS support for arm on here as it is supported since r231618/
r231619 and working since r233106.

When one attempts to compile the tree with -march=i386, which also used
to be gcc's default before r198344, calls to atomic builtins will not be
expanded inline. Instead, they will be generated as calls to external
functions (e.g. __sync_fetch_and_add_N), leading to linking errors later
on.

Put in a seatbelt that disables use of atomic builtins in libstdc++ and
llvm, when tuning specifically for the real i386 CPU. This does not
protect against all possible issues, but it is better than nothing.

Now that TLS is supported for sparc64 by both binutils 2.17.50 committed
in r218822 and rtld(1) committed in r219533 turn on TLS support in GCC.

GCC defines built-ins for atomic instructions found on i486 and higher.
Because FreeBSD no longer supports the 80386 cpu all code targeting
FreeBSD/i386 necessarily runs on i486 or higher so the compiler
built-ins can be used by default inside libstdc++ and in C++ headers.
This allows newly compiled C++ code to inline some atomic operations.
Old binaries continue to use libstdc++ functions.

PR: 148926
Tested by: Yuri Karaban <tech askold net>
Reviewed by: kan
Approved by: kib (mentor)
MFC after: 2 weeks

Add MIPS to the list of "no TLS" architectures.

Approved by: cognet (mentor)

Update bmake glue to build GCC 4.2.

Also:
Switch FreeBSD to use libgcc_s.so.1.

Use dl_iterate_phdr to locate shared objects' exception frame
info instead of depending on older register_frame_info machinery.
This allows us to avoid depending on libgcc_s.so.1 in binaries
that do not use exception handling directly. As an additional
benefit it breaks circular libc <=> libgcc_s.so.1 dependency too.

Build newly added libgomp.so.1 library, the runtime support
bits for OpenMP.

Build LGPLed libssp library. Our libc provides our own
BSD-licensed SSP callbacks implementation, so this library
is only built to benefit applications that have hadcoded
knowledge of libssp.so and libssp_nonshared.a. When linked
in from command line, these libraries override libc
implementation.

Reduce diffs with file generated by FSF configure.

Include <sys/defs.h> to get __ISO_C_VISIBLE definition is one is not
already available.

Do not expose vfwscanf, vswscanf, vwscanf and wcstof functions if
they are not visible from wchar.h.

Teach libstdc++ about frexpl() and ldexpl().

More math functions.

Prodded by: stefanf

We have floorl() now. Reflect this in the library config file.

Bmake glue for GCC 3.4.2-prerelease.

Update for GCC 3.3.1-pre.

Enable wchar_t support in libstdc++.

Enable ISO-C99 compatibility -- among other things, this tells libstdc++
not to blindly undef isnan() and other functions that became macros in C99.
Enable use of newly grown C99 functions: strtof(), strtold(), wcstof()

Submitted by: das

Update for GCC 3.2.2

Update for Gcc 3.2.1 release.
We also have more wide char support in libc now.

Bmake bits for Gcc 3.1.

Partially made possible by: Wilko.Bulte@compaq.com

libstdc++ version 3 (Gcc 3.1 is a consumer) uses the typical `config.h'.