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Some minor changes to UPDATING.

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This commit is contained in:
Dimitry Andric 2014-12-31 18:11:09 +00:00
parent ccd2f3b61a
commit 0ac2c3d1f3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/clang350-import/; revision=276475
1 changed files with 12 additions and 6 deletions
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18
UPDATING
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@ -34,18 +34,17 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
20141231:
Clang, llvm and lldb have been upgraded to 3.5.0 release.
As of this release, a prerequisite for building llvm and clang is a
C++11 capable compiler and C++11 standard library. This means that to
As of this release, a prerequisite for building clang, llvm and lldb is
a C++11 capable compiler and C++11 standard library. This means that to
be able to successfully build the cross-tools stage of buildworld, with
clang as the bootstrap compiler, your system compiler or cross compiler
should either be clang 3.3 or later, or gcc 4.8 or later, and your
system C++ library should be libc++, or libdstdc++ from gcc 4.8 or
later.
On any earlier standard FreeBSD 10.x or 11.x installation, where clang
and libc++ are on by default (that is, on x86 or arm), this should work
out of the box, unless you explicitly disabled clang or libc++. In that
case, you must re-enable, build and install both of those first.
On any standard FreeBSD 10.x or 11.x installation, where clang and
libc++ are on by default (that is, on x86 or arm), this should work out
of the box.
On 9.x installations where clang is enabled by default, e.g. on x86 and
powerpc, libc++ will not be enabled by default, so libc++ should be
@ -55,6 +54,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW:
On 8.x and earlier installations, upgrade to 9.x first, and then follow
the instructions for 9.x above.
Sparc64 and mips users are unaffected, as they still use gcc 4.2.1 by
default, and do not build clang.
Many embedded systems are resource constrained, and will not be able to
build clang in a reasonable time, or in some cases at all. In those
cases, cross building bootable systems on amd64 is a workaround.
This new version of clang introduces a number of new warnings, of which
the following are most likely to appear: