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Remove minimum toolchain soft-error 

Summary:
Back in January I changed the minimum toolchain version required to build clang
and LLVM: D57264. Since then we've release LLVM 8, following
[our process](http://llvm.org/docs/DeveloperPolicy.html#toolchain)
it's therefore now a good time to remove the soft-error and officially deprecate
older toolchains. I tried this out last Tursday night to see if any bots
complained, and I saw no complaints. I also manually audited bots and didn't see
any bot that should break, but their toolchain information is unreliable and
some bots are offline.

Once this patch stick we'll move to C++14 as we've
[already agreed](http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html).

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits, EricWF, thakis, chandlerc

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66188

llvm-svn: 368799
This commit is contained in:
JF Bastien 2019-08-14 04:30:51 +00:00
parent a318c55073
commit 20644a9540
2 changed files with 4 additions and 13 deletions
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8
llvm/cmake/modules/CheckCompilerVersion.cmake
View File

@ -4,11 +4,11 @@
include(CheckCXXSourceCompiles)
set(GCC_MIN 4.8)
set(GCC_MIN 5.1)
set(GCC_SOFT_ERROR 5.1)
set(CLANG_MIN 3.1)
set(CLANG_MIN 3.5)
set(CLANG_SOFT_ERROR 3.5)
set(APPLECLANG_MIN 3.1)
set(APPLECLANG_MIN 6.0)
set(APPLECLANG_SOFT_ERROR 6.0)
# https://en.wikipedia.org/wiki/Microsoft_Visual_C#Internal_version_numbering
@ -17,7 +17,7 @@ set(MSVC_MIN 19.1)
set(MSVC_SOFT_ERROR 19.1)
# Map the above GCC versions to dates: https://gcc.gnu.org/develop.html#timeline
set(GCC_MIN_DATE 20130322)
set(GCC_MIN_DATE 20150422)
set(GCC_SOFT_ERROR_DATE 20150422)

9
llvm/docs/GettingStarted.rst
View File

@ -235,15 +235,6 @@ popular host toolchains for specific minimum versions in our build systems:
* GCC 5.1
* Visual Studio 2017
The below versions currently soft-error as we transition to the new compiler
versions listed above. The LLVM codebase is currently known to compile correctly
with the following compilers, though this will change in the near future:
* Clang 3.1
* Apple Clang 3.1
* GCC 4.8
* Visual Studio 2017
Anything older than these toolchains *may* work, but will require forcing the
build system with a special option and is not really a supported host platform.
Also note that older versions of these compilers have often crashed or