From 3bec3b9f9ba49bbc2e7244737c50bdbaa12a6b14 Mon Sep 17 00:00:00 2001
From: tharvik <tharvik@users.noreply.github.com>
Date: Sat, 19 Jan 2019 16:47:33 +0100
Subject: llvm-config sanity check

---
 cmake/Findllvm.cmake | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'cmake')

diff --git a/cmake/Findllvm.cmake b/cmake/Findllvm.cmake
index b847813682..70d50f9843 100644
--- a/cmake/Findllvm.cmake
+++ b/cmake/Findllvm.cmake
@@ -15,6 +15,15 @@ find_program(LLVM_CONFIG_EXE
         "c:/msys64/mingw64/bin"
         "C:/Libraries/llvm-7.0.0/bin")
 
+execute_process(
+	COMMAND ${LLVM_CONFIG_EXE} --version
+	OUTPUT_VARIABLE LLVM_CONFIG_VERSION
+	OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+if(LLVM_CONFIG_VERSION VERSION_LESS 7)
+  message(FATAL_ERROR "expected LLVM version >=7 but found ${LLVM_CONFIG_VERSION}")
+endif()
+
 if(NOT(CMAKE_BUILD_TYPE STREQUAL "Debug") OR ZIG_STATIC)
   execute_process(
       COMMAND ${LLVM_CONFIG_EXE} --libfiles --link-static
-- 
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