Teach config.guess that MSYS exists.

We might not want to upgrade config.guess to the current
version due to the license change from GPL2 to GPL3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242178 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/autoconf/config.guess b/autoconf/config.guess
index 73d671bc2c6b3bfbfdda1dcea4590879728f6612..b209a1a06c6f6ece868912929027ab4571cc2184 100755 (executable)
--- a/autoconf/config.guess
+++ b/autoconf/config.guess
@@ -810,6 +810,9 @@ EOF
     *:MINGW*:*)
        echo ${UNAME_MACHINE}-pc-mingw32
        exit ;;
+    *:MSYS*:*)
+       echo ${UNAME_MACHINE}-pc-msys
+       exit ;;
     i*:windows32*:*)
        # uname -m includes "-pc" on this system.
        echo ${UNAME_MACHINE}-mingw32