From 944dab13514f21d923b503ecc63274df1d03810a Mon Sep 17 00:00:00 2001
From: Christoph Junghans <junghans@lanl.gov>
Date: Fri, 11 May 2018 11:53:34 -0600
Subject: [PATCH] USER-INTEL: enforce icc and add icc flags

---
 cmake/CMakeLists.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 71070aff45..875cbada3a 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -527,6 +527,18 @@ if(ENABLE_OPT)
 endif()
 
 if(ENABLE_USER-INTEL)
+    if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
+      message(FATAL_ERROR "USER-INTEL is only useful together with intel compiler")
+    endif()
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "2016")
+      message(FATAL_ERROR "USER-INTEL is needed at least 2016 intel compiler")
+    endif()
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "2017.3")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -xHost")
+    else()
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -xCOMMON-AVX512")
+    endif()
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -qopenmp -qno-offload -fno-alias -ansi-alias -restrict -DLMP_INTEL_USELRT -DLMP_USE_MKL_RNG-O2 -fp-model fast=2 -no-prec-div -qoverride-limits -qopt-zmm-usage=high") 
     set(USER-INTEL_SOURCES_DIR ${LAMMPS_SOURCE_DIR}/USER-INTEL)
     set(USER-INTEL_SOURCES ${USER-INTEL_SOURCES_DIR}/intel_preprocess.h
                            ${USER-INTEL_SOURCES_DIR}/intel_buffers.h
-- 
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