From 1aba9998f11c9ecdab79925c3706cf92e9be3d7d Mon Sep 17 00:00:00 2001
From: Soumith Chintala <soumith@gmail.com>
Date: Tue, 18 Jul 2017 03:58:01 +0000
Subject: static MKL detection and linkage fixes

---
 lib/TH/CMakeLists.txt      |  8 +++++++-
 lib/TH/cmake/FindMKL.cmake | 27 ++++++++++++++++++++-------
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/lib/TH/CMakeLists.txt b/lib/TH/CMakeLists.txt
index dd0b75d..c9be21a 100644
--- a/lib/TH/CMakeLists.txt
+++ b/lib/TH/CMakeLists.txt
@@ -303,7 +303,13 @@ ENDIF()
 FIND_PACKAGE(BLAS)
 IF(BLAS_FOUND)
   SET(USE_BLAS 1)
-  TARGET_LINK_LIBRARIES(TH ${BLAS_LIBRARIES})
+  IF ($ENV{TH_BINARY_BUILD})
+    MESSAGE(STATUS "TH_BINARY_BUILD detected. Enabling special linkage.")
+    TARGET_LINK_LIBRARIES(TH "${BLAS_LIBRARIES};${BLAS_LIBRARIES};${BLAS_LIBRARIES}")
+  ELSE ($ENV{TH_BINARY_BUILD})
+    TARGET_LINK_LIBRARIES(TH ${BLAS_LIBRARIES})
+  ENDIF ($ENV{TH_BINARY_BUILD})
+  
   IF(BLAS_INFO STREQUAL "mkl")
     ADD_DEFINITIONS(-DTH_BLAS_MKL)
   ENDIF()
diff --git a/lib/TH/cmake/FindMKL.cmake b/lib/TH/cmake/FindMKL.cmake
index 7c9325a..88f0aa3 100644
--- a/lib/TH/cmake/FindMKL.cmake
+++ b/lib/TH/cmake/FindMKL.cmake
@@ -50,7 +50,7 @@ ENDIF ("${SIZE_OF_VOIDP}" EQUAL 8)
 IF(CMAKE_COMPILER_IS_GNUCC)
   SET(mklthreads "mkl_gnu_thread" "mkl_intel_thread")
   SET(mklifaces  "gf" "intel")
-  SET(mklrtls "iomp5")
+  SET(mklrtls "gomp" "iomp5")
 ELSE(CMAKE_COMPILER_IS_GNUCC)
   SET(mklthreads "mkl_intel_thread")
   SET(mklifaces  "intel")
@@ -92,7 +92,7 @@ ENDIF (INTEL_MKL_DIR)
 # Try linking multiple libs
 MACRO(CHECK_ALL_LIBRARIES LIBRARIES _name _list _flags)
   # This macro checks for the existence of the combination of libraries given by _list.
-  # If the combination is found, this macro whether we can link against that library
+  # If the combination is found, this macro checks whether we can link against that library
   # combination using the name of a routine given by _name using the linker
   # flags given by _flags.  If the combination of libraries is found and passes
   # the link test, LIBRARIES is set to the list of complete library paths that
@@ -116,8 +116,15 @@ MACRO(CHECK_ALL_LIBRARIES LIBRARIES _name _list _flags)
   message(STATUS "Checking for [${__list}]")
   FOREACH(_library ${_list})
     SET(_combined_name ${_combined_name}_${_library})
-    IF(_libraries_work)      
-      FIND_LIBRARY(${_prefix}_${_library}_LIBRARY NAMES ${_library})
+    IF(_libraries_work)
+      IF(${_library} STREQUAL "gomp")
+          FIND_PACKAGE(OpenMP)
+          IF(OPENMP_FOUND)
+	      SET(${_prefix}_${_library}_LIBRARY ${OpenMP_C_FLAGS})
+          ENDIF(OPENMP_FOUND)
+      ELSE(${_library} STREQUAL "gomp")
+          FIND_LIBRARY(${_prefix}_${_library}_LIBRARY NAMES ${_library})
+      ENDIF(${_library} STREQUAL "gomp")
       MARK_AS_ADVANCED(${_prefix}_${_library}_LIBRARY)
       SET(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
       SET(_libraries_work ${${_prefix}_${_library}_LIBRARY})
@@ -131,6 +138,7 @@ MACRO(CHECK_ALL_LIBRARIES LIBRARIES _name _list _flags)
   # Test this combination of libraries.
   IF(_libraries_work)
     SET(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
+    SET(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES};${CMAKE_REQUIRED_LIBRARIES}")
     CHECK_FUNCTION_EXISTS(${_name} ${_prefix}${_combined_name}_WORKS)
     SET(CMAKE_REQUIRED_LIBRARIES)
     MARK_AS_ADVANCED(${_prefix}${_combined_name}_WORKS)
@@ -150,6 +158,11 @@ else(WIN32)
   set(mkl_m "m")
 endif(WIN32)
 
+if(UNIX AND NOT APPLE)
+  set(mkl_dl "${CMAKE_DL_LIBS}")
+else(UNIX AND NOT APPLE)
+  set(mkl_dl "")
+endif(UNIX AND NOT APPLE)
 
 # Check for version 10/11
 IF (NOT MKL_LIBRARIES)
@@ -161,7 +174,7 @@ FOREACH(mklrtl ${mklrtls} "")
       FOREACH(mklthread ${mklthreads})
         IF (NOT MKL_LIBRARIES AND NOT INTEL_MKL_SEQUENTIAL)
           CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
-            "mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};pthread;${mkl_m}" "")
+            "mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};pthread;${mkl_m};${mkl_dl}" "")
         ENDIF (NOT MKL_LIBRARIES AND NOT INTEL_MKL_SEQUENTIAL)          
       ENDFOREACH(mklthread)
     ENDFOREACH(mkl64)
@@ -172,7 +185,7 @@ FOREACH(mklrtl ${mklrtls} "")
     FOREACH(mkl64 ${mkl64s} "")
       IF (NOT MKL_LIBRARIES)
         CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
-          "mkl_${mkliface}${mkl64};mkl_sequential;mkl_core;${mkl_m}" "")
+          "mkl_${mkliface}${mkl64};mkl_sequential;mkl_core;${mkl_m};${mkl_dl}" "")
         IF (MKL_LIBRARIES)
           SET(mklseq "_sequential")
         ENDIF (MKL_LIBRARIES)
@@ -186,7 +199,7 @@ FOREACH(mklrtl ${mklrtls} "")
       FOREACH(mklthread ${mklthreads})
         IF (NOT MKL_LIBRARIES)
           CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
-            "mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};pthread;${mkl_m}" "")
+            "mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};pthread;${mkl_m};${mkl_dl}" "")
         ENDIF (NOT MKL_LIBRARIES)          
       ENDFOREACH(mklthread)
     ENDFOREACH(mkl64)
-- 
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