[CMake] Allow overriding MSVC_DIA_SDK_DIR via CMake
This eases using it in cross-msvc setups.
Differential Revision: https://reviews.llvm.org/D69239
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 4c585b8..028a2cc 100644
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -474,7 +474,8 @@
set(strdup "_strdup")
# See if the DIA SDK is available and usable.
- set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK")
+ set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK" CACHE PATH
+ "Path to the DIA SDK")
# Due to a bug in MSVC 2013's installation software, it is possible
# for MSVC 2013 to write the DIA SDK into the Visual Studio 2012
