Revert "Temporarily bump minimum compiler version"

It's been in for more than 30 min and no bots have complained. Let's see if some
slow ones catch up. I'll do another manual pass on bots later (in case some that
were down are back up), and then turn this on permanently through a regular
review.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@368253 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/modules/CheckCompilerVersion.cmake b/cmake/modules/CheckCompilerVersion.cmake
index ad70d85dc6a7213825ad4165b43f2deae5fc1e26..2f4d75f1ebea0186b667075459cc5aba9d8582d6 100644 (file)
--- a/cmake/modules/CheckCompilerVersion.cmake
+++ b/cmake/modules/CheckCompilerVersion.cmake
@@ -4,11 +4,11 @@
 
 include(CheckCXXSourceCompiles)
 
-set(GCC_MIN 5.1)
+set(GCC_MIN 4.8)
 set(GCC_SOFT_ERROR 5.1)
-set(CLANG_MIN 3.5)
+set(CLANG_MIN 3.1)
 set(CLANG_SOFT_ERROR 3.5)
-set(APPLECLANG_MIN 6.0)
+set(APPLECLANG_MIN 3.1)
 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 20150422)
+set(GCC_MIN_DATE 20130322)
 set(GCC_SOFT_ERROR_DATE 20150422)