[llvm-branch-commits] [llvm-branch] r353808 - ReleaseNotes about the toolchain version cmake check

[Hans Wennborg via llvm-branch-commits]

Author: hans
Date: Tue Feb 12 00:45:37 2019
New Revision: 353808

URL: http://llvm.org/viewvc/llvm-project?rev=353808&view=rev
Log:
ReleaseNotes about the toolchain version cmake check

Based on text from JF!

Modified:
    llvm/branches/release_80/docs/ReleaseNotes.rst

Modified: llvm/branches/release_80/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_80/docs/ReleaseNotes.rst?rev=353808&r1=353807&r2=353808&view=diff
==============================================================================
--- llvm/branches/release_80/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_80/docs/ReleaseNotes.rst Tue Feb 12 00:45:37 2019
@@ -40,6 +40,22 @@ Non-comprehensive list of changes in thi
    functionality, or simply have a lot to talk about), see the `NOTE` below
    for adding a new subsection.
 
+* As `discussed on the mailing list
+  <https://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html>`_,
+  building LLVM will soon require more recent toolchains as follows:
+
+  ============= ====
+  Clang         3.5
+  Apple Clang   6.0
+  GCC           5.1
+  Visual Studio 2017
+  ============= ====
+
+  A new CMake check when configuring LLVM provides a soft-error if your
+  toolchain will become unsupported soon. You can opt out of the soft-error by
+  setting the ``LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN`` CMake variable to
+  ``ON``.
+
 * The **llvm-cov** tool can now export lcov trace files using the
   `-format=lcov` option of the `export` command.