Merge topic 'blaslapack_mkl_gfortran'

c259912b14 FindBLAS: Do not look for BLAS once BLAS95 has been found
d5f691be0b FindLAPACK: Additional libraries for MKL+gfortran combination
8b63265ea5 FindLAPACK: Unify internal variables related to MKL
ede1715c1d FindLAPACK: Remove MKL components already provided by MKL BLAS
03879b11af FindLAPACK: Prioritize Intel MKL
b4edf7b5d2 FindBLAS: Support 32bit Intel MKL 10.3+
fc149a72f7 FindBLAS: Support combination of gfortran and Intel MKL
f0d52f55f1 FindBLAS: Consolidate duplicated code related to MKL on Windows

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2633

2 files changed, 144 insertions, 119 deletions

diff --git a/Modules/FindBLAS.cmake b/Modules/FindBLAS.cmake
index 14cc68a..b6348fd 100644
--- a/Modules/FindBLAS.cmake
+++ b/Modules/FindBLAS.cmake
@@ -127,6 +127,8 @@ macro(Check_Fortran_Libraries LIBRARIES _prefix _name _flags _list _thread)
     endif ()
   endif ()
 
+  list(APPEND _libdir "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
+
   foreach(_library ${_list})
     set(_combined_name ${_combined_name}_${_library})
 
@@ -171,6 +173,8 @@ macro(Check_Fortran_Libraries LIBRARIES _prefix _name _flags _list _thread)
   if(_libraries_work)
     if("${_list}" STREQUAL "")
       set(${LIBRARIES} "${LIBRARIES}-PLACEHOLDER-FOR-EMPTY-LIBRARIES")
+    else()
+      set(${LIBRARIES} ${${LIBRARIES}} ${_thread})  # for static link
     endif()
   else()
     set(${LIBRARIES} FALSE)
@@ -206,14 +210,34 @@ endif ()
 #BLAS in intel mkl 10+ library? (em64t 64bit)
 if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
   if (NOT BLAS_LIBRARIES)
+
+    # System-specific settings
+    if (WIN32)
+      if (BLA_STATIC)
+        set(BLAS_mkl_DLL_SUFFIX "")
+      else()
+        set(BLAS_mkl_DLL_SUFFIX "_dll")
+      endif()
+    else()
+      if(CMAKE_Fortran_COMPILER_LOADED AND CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
+          set(BLAS_mkl_INTFACE "gf")
+          set(BLAS_mkl_THREADING "gnu")
+          set(BLAS_mkl_OMP "gomp")
+      else()
+          set(BLAS_mkl_INTFACE "intel")
+          set(BLAS_mkl_THREADING "intel")
+          set(BLAS_mkl_OMP "iomp5")
+      endif()
+      set(BLAS_mkl_LM "-lm")
+      set(BLAS_mkl_LDL "-ldl")
+    endif()
+
     if (BLA_VENDOR MATCHES "_64ilp")
       set(BLAS_mkl_ILP_MODE "ilp64")
     else ()
       set(BLAS_mkl_ILP_MODE "lp64")
     endif ()
-    if (NOT WIN32)
-      set(LM "-lm")
-    endif ()
+
     if (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED)
       if(BLAS_FIND_QUIETLY OR NOT BLAS_FIND_REQUIRED)
         find_package(Threads)
@@ -227,12 +251,6 @@ if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
         set(BLAS_mkl_SEARCH_SYMBOL sgemm_f95)
         set(_LIBRARIES BLAS95_LIBRARIES)
         if (WIN32)
-          if (BLA_STATIC)
-            set(BLAS_mkl_DLL_SUFFIX "")
-          else()
-            set(BLAS_mkl_DLL_SUFFIX "_dll")
-          endif()
-
           # Find the main file (32-bit or 64-bit)
           set(BLAS_SEARCH_LIBS_WIN_MAIN "")
           if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
@@ -268,38 +286,32 @@ if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
           endforeach()
         else ()
           if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
+            # old version
+            list(APPEND BLAS_SEARCH_LIBS
+              "mkl_blas95 mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
+
+            # mkl >= 10.3
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_blas95 mkl_intel mkl_intel_thread mkl_core guide")
+              "mkl_blas95 mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_OMP}")
           endif ()
           if (BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
             # old version
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_blas95 mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core guide")
+              "mkl_blas95 mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
 
             # mkl >= 10.3
-            if (CMAKE_C_COMPILER MATCHES ".+gcc")
-              list(APPEND BLAS_SEARCH_LIBS
-                "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_gnu_thread mkl_core gomp")
-            else ()
-              list(APPEND BLAS_SEARCH_LIBS
-                "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core iomp5")
-            endif ()
+            list(APPEND BLAS_SEARCH_LIBS
+              "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_OMP}")
           endif ()
           if (BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
+              "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
           endif ()
         endif ()
       else ()
         set(BLAS_mkl_SEARCH_SYMBOL sgemm)
         set(_LIBRARIES BLAS_LIBRARIES)
         if (WIN32)
-          if (BLA_STATIC)
-            set(BLAS_mkl_DLL_SUFFIX "")
-          else()
-            set(BLAS_mkl_DLL_SUFFIX "_dll")
-          endif()
-
           # Find the main file (32-bit or 64-bit)
           set(BLAS_SEARCH_LIBS_WIN_MAIN "")
           if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
@@ -335,27 +347,26 @@ if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
           endforeach()
         else ()
           if (BLA_VENDOR STREQUAL "Intel10_32" OR BLA_VENDOR STREQUAL "All")
+            # old version
+            list(APPEND BLAS_SEARCH_LIBS
+              "mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
+
+            # mkl >= 10.3
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel mkl_intel_thread mkl_core guide")
+              "mkl_${BLAS_mkl_INTFACE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_OMP}")
           endif ()
           if (BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
-
             # old version
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core guide")
+              "mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core guide")
 
             # mkl >= 10.3
-            if (CMAKE_C_COMPILER MATCHES ".+gcc")
-              list(APPEND BLAS_SEARCH_LIBS
-                "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_gnu_thread mkl_core gomp")
-            else ()
-              list(APPEND BLAS_SEARCH_LIBS
-                "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core iomp5")
-            endif ()
+            list(APPEND BLAS_SEARCH_LIBS
+              "mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_${BLAS_mkl_THREADING}_thread mkl_core ${BLAS_mkl_OMP}")
           endif ()
           if (BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
+              "mkl_${BLAS_mkl_INTFACE}_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
           endif ()
 
           #older vesions of intel mkl libs
@@ -379,16 +390,30 @@ if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
             ${BLAS_mkl_SEARCH_SYMBOL}
             ""
             "${SEARCH_LIBS}"
-            "${CMAKE_THREAD_LIBS_INIT};${LM}"
+            "${CMAKE_THREAD_LIBS_INIT};${BLAS_mkl_LM};${BLAS_mkl_LDL}"
             )
         endif ()
       endforeach ()
 
     endif ()
     unset(BLAS_mkl_ILP_MODE)
+    unset(BLAS_mkl_INTFACE)
+    unset(BLAS_mkl_THREADING)
+    unset(BLAS_mkl_OMP)
+    unset(BLAS_mkl_DLL_SUFFIX)
+    unset(BLAS_mkl_LM)
+    unset(BLAS_mkl_LDL)
   endif ()
 endif ()
 
+if(BLA_F95)
+  find_package_handle_standard_args(BLAS REQUIRED_VARS BLAS95_LIBRARIES)
+  set(BLAS95_FOUND ${BLAS_FOUND})
+  if(BLAS_FOUND)
+    set(BLAS_LIBRARIES "${BLAS95_LIBRARIES}")
+  endif()
+endif()
+
 if (BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All")
   if(NOT BLAS_LIBRARIES)
     # gotoblas (http://www.tacc.utexas.edu/tacc-projects/gotoblas2)
@@ -724,13 +749,7 @@ if (BLA_VENDOR STREQUAL "Generic" OR BLA_VENDOR STREQUAL "All")
   endif()
 endif ()
 
-if(BLA_F95)
-  find_package_handle_standard_args(BLAS REQUIRED_VARS BLAS95_LIBRARIES)
-  set(BLAS95_FOUND ${BLAS_FOUND})
-  if(BLAS_FOUND)
-    set(BLAS_LIBRARIES "${BLAS95_LIBRARIES}")
-  endif()
-else()
+if(NOT BLA_F95)
   find_package_handle_standard_args(BLAS REQUIRED_VARS BLAS_LIBRARIES)
 endif()
 
diff --git a/Modules/FindLAPACK.cmake b/Modules/FindLAPACK.cmake
index 62ff94c..7619664 100644
--- a/Modules/FindLAPACK.cmake
+++ b/Modules/FindLAPACK.cmake
@@ -96,6 +96,9 @@ if (NOT _libdir)
     set(_libdir ENV LD_LIBRARY_PATH)
   endif ()
 endif ()
+
+list(APPEND _libdir "${CMAKE_C_IMPLICIT_LINK_DIRECTORIES}")
+
 foreach(_library ${_list})
   set(_combined_name ${_combined_name}_${_library})
 
@@ -175,6 +178,84 @@ if(BLAS_FOUND)
     endif()
   endif ()
 
+#intel lapack
+if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
+  if (NOT WIN32)
+    set(LAPACK_mkl_LM "-lm")
+    set(LAPACK_mkl_LDL "-ldl")
+  endif ()
+  if (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED)
+    if(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
+      find_PACKAGE(Threads)
+    else()
+      find_package(Threads REQUIRED)
+    endif()
+
+    if (BLA_VENDOR MATCHES "_64ilp")
+      set(LAPACK_mkl_ILP_MODE "ilp64")
+    else ()
+      set(LAPACK_mkl_ILP_MODE "lp64")
+    endif ()
+
+    set(LAPACK_SEARCH_LIBS "")
+
+    if (BLA_F95)
+      set(LAPACK_mkl_SEARCH_SYMBOL "cheev_f95")
+      set(_LIBRARIES LAPACK95_LIBRARIES)
+      set(_BLAS_LIBRARIES ${BLAS95_LIBRARIES})
+
+      # old
+      list(APPEND LAPACK_SEARCH_LIBS
+        "mkl_lapack95")
+      # new >= 10.3
+      list(APPEND LAPACK_SEARCH_LIBS
+        "mkl_intel_c")
+      list(APPEND LAPACK_SEARCH_LIBS
+        "mkl_lapack95_${LAPACK_mkl_ILP_MODE}")
+    else()
+      set(LAPACK_mkl_SEARCH_SYMBOL "cheev")
+      set(_LIBRARIES LAPACK_LIBRARIES)
+      set(_BLAS_LIBRARIES ${BLAS_LIBRARIES})
+
+      # old
+      list(APPEND LAPACK_SEARCH_LIBS
+        "mkl_lapack")
+    endif()
+
+    # First try empty lapack libs
+    if (NOT ${_LIBRARIES})
+      check_lapack_libraries(
+        ${_LIBRARIES}
+        LAPACK
+        ${LAPACK_mkl_SEARCH_SYMBOL}
+        ""
+        ""
+        "${_BLAS_LIBRARIES}"
+        ""
+        )
+    endif ()
+    # Then try the search libs
+    foreach (IT ${LAPACK_SEARCH_LIBS})
+      if (NOT ${_LIBRARIES})
+        check_lapack_libraries(
+          ${_LIBRARIES}
+          LAPACK
+          ${LAPACK_mkl_SEARCH_SYMBOL}
+          ""
+          "${IT}"
+          "${_BLAS_LIBRARIES}"
+          "${CMAKE_THREAD_LIBS_INIT};${LAPACK_mkl_LM};${LAPACK_mkl_LDL}"
+          )
+      endif ()
+    endforeach ()
+
+    unset(LAPACK_mkl_ILP_MODE)
+    unset(LAPACK_mkl_SEARCH_SYMBOL)
+    unset(LAPACK_mkl_LM)
+    unset(LAPACK_mkl_LDL)
+  endif ()
+endif()
+
 if (BLA_VENDOR STREQUAL "Goto" OR BLA_VENDOR STREQUAL "All")
  if(NOT LAPACK_LIBRARIES)
   check_lapack_libraries(
@@ -267,82 +348,7 @@ if (BLA_VENDOR STREQUAL "Generic" OR
     )
   endif ()
 endif ()
-#intel lapack
-if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
-  if (NOT WIN32)
-    set(LM "-lm")
-  endif ()
-  if (CMAKE_C_COMPILER_LOADED OR CMAKE_CXX_COMPILER_LOADED)
-    if(LAPACK_FIND_QUIETLY OR NOT LAPACK_FIND_REQUIRED)
-      find_PACKAGE(Threads)
-    else()
-      find_package(Threads REQUIRED)
-    endif()
-
-    if (BLA_VENDOR MATCHES "_64ilp")
-      set(BLAS_mkl_ILP_MODE "ilp64")
-    else ()
-      set(BLAS_mkl_ILP_MODE "lp64")
-    endif ()
-
-    set(LAPACK_SEARCH_LIBS "")
-
-    if (BLA_F95)
-      set(LAPACK_mkl_SEARCH_SYMBOL "cheev_f95")
-      set(_LIBRARIES LAPACK95_LIBRARIES)
-      set(_BLAS_LIBRARIES ${BLAS95_LIBRARIES})
-
-      # old
-      list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_lapack95")
-      # new >= 10.3
-      list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_intel_c")
-      list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_lapack95_${BLAS_mkl_ILP_MODE}")
-    else()
-      set(LAPACK_mkl_SEARCH_SYMBOL "cheev")
-      set(_LIBRARIES LAPACK_LIBRARIES)
-      set(_BLAS_LIBRARIES ${BLAS_LIBRARIES})
 
-      # old
-      list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_lapack")
-      # new >= 10.3
-      list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_gf_${BLAS_mkl_ILP_MODE}")
-    endif()
-
-    # First try empty lapack libs
-    if (NOT ${_LIBRARIES})
-      check_lapack_libraries(
-        ${_LIBRARIES}
-        BLAS
-        ${LAPACK_mkl_SEARCH_SYMBOL}
-        ""
-        ""
-        "${_BLAS_LIBRARIES}"
-        "${CMAKE_THREAD_LIBS_INIT};${LM}"
-        )
-    endif ()
-    # Then try the search libs
-    foreach (IT ${LAPACK_SEARCH_LIBS})
-      if (NOT ${_LIBRARIES})
-        check_lapack_libraries(
-          ${_LIBRARIES}
-          BLAS
-          ${LAPACK_mkl_SEARCH_SYMBOL}
-          ""
-          "${IT}"
-          "${_BLAS_LIBRARIES}"
-          "${CMAKE_THREAD_LIBS_INIT};${LM}"
-          )
-      endif ()
-    endforeach ()
-
-    unset(BLAS_mkl_ILP_MODE)
-  endif ()
-endif()
 else()
   message(STATUS "LAPACK requires BLAS")
 endif()