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https://sources.debian.org/data/main/a/arrayfire/3.3.2+dfsg1-4/debian/patches/Fix-LAPACKE-detection.patch

From: Ghislain Antony Vaillant <ghisvail@gmail.com>
Date: Wed, 2 Mar 2016 10:46:50 +0000
Subject: Fix LAPACKE detection.

---
 CMakeModules/FindLAPACKE.cmake    | 54 +++++++++++++++------------------------
 src/backend/cpu/CMakeLists.txt    | 18 ++++++-------
 src/backend/cuda/CMakeLists.txt   | 11 ++++----
 src/backend/opencl/CMakeLists.txt | 19 +++++++-------
 4 files changed, 45 insertions(+), 57 deletions(-)

diff --git a/CMakeModules/FindLAPACKE.cmake b/CMakeModules/FindLAPACKE.cmake
index 9251ee9..1a73632 100644
--- a/CMakeModules/FindLAPACKE.cmake
+++ b/CMakeModules/FindLAPACKE.cmake
@@ -4,13 +4,13 @@
 #   FIND_PACKAGE(LAPACKE [REQUIRED] [QUIET] )
 #
 # It sets the following variables:
-#   LAPACK_FOUND               ... true if LAPACKE is found on the system
-#   LAPACK_LIBRARIES           ... full path to LAPACKE library
-#   LAPACK_INCLUDES            ... LAPACKE include directory
-#
+#   LAPACKE_FOUND               ... true if LAPACKE is found on the system
+#   LAPACKE_INCLUDE_DIRS        ... LAPACKE include directories
+#   LAPACKE_LIBRARIES           ... path to LAPACKE libraries
+#   LAPACKE_LIBRARY_DIRS        ... LAPACKE library directories
 
 SET(LAPACKE_ROOT_DIR CACHE STRING
-  "Root directory for custom LAPACK implementation")
+  "Root directory for custom LAPACKE implementation")
 
 IF (NOT INTEL_MKL_ROOT_DIR)
   SET(INTEL_MKL_ROOT_DIR $ENV{INTEL_MKL_ROOT})
@@ -40,29 +40,20 @@ IF(PKG_CONFIG_FOUND AND NOT LAPACKE_ROOT_DIR)
 ENDIF()
 
 IF(PC_LAPACKE_FOUND)
+
+    # Verify sanity of LAPACKE pkg-config file.
     FOREACH(PC_LIB ${PC_LAPACKE_LIBRARIES})
       FIND_LIBRARY(${PC_LIB}_LIBRARY NAMES ${PC_LIB} HINTS ${PC_LAPACKE_LIBRARY_DIRS} )
       IF (NOT ${PC_LIB}_LIBRARY)
         MESSAGE(FATAL_ERROR "Something is wrong in your pkg-config file - lib ${PC_LIB} not found in ${PC_LAPACKE_LIBRARY_DIRS}")
       ENDIF (NOT ${PC_LIB}_LIBRARY)
-      LIST(APPEND LAPACKE_LIB ${${PC_LIB}_LIBRARY})
     ENDFOREACH(PC_LIB)
 
-    FIND_PATH(
-        LAPACKE_INCLUDES
-        NAMES "lapacke.h"
-        PATHS
-        ${PC_LAPACKE_INCLUDE_DIRS}
-        ${INCLUDE_INSTALL_DIR}
-        /usr/include
-        /usr/local/include
-        /sw/include
-        /opt/local/include
-        DOC "LAPACKE Include Directory"
-        )
+    set(LAPACKE_LIBRARIES ${PC_LAPACKE_LIBRARIES})
+    set(LAPACKE_LIBRARY_DIRS ${PC_LAPACKE_LIBRARY_DIRS})
 
-    FIND_PACKAGE_HANDLE_STANDARD_ARGS(LAPACKE DEFAULT_MSG LAPACKE_LIB)
-    MARK_AS_ADVANCED(LAPACKE_INCLUDES LAPACKE_LIB)
+    FIND_PATH(LAPACKE_INCLUDE_DIRS NAMES "lapacke.h"
+              PATHS ${PC_LAPACKE_INCLUDE_DIRS})
 
 ELSE(PC_LAPACKE_FOUND)
 
@@ -97,7 +88,6 @@ ELSE(PC_LAPACKE_FOUND)
             LAPACKE_LIB
             NAMES "lapacke" "liblapacke" "openblas" "mkl_rt"
             PATHS
-            ${PC_LAPACKE_LIBRARY_DIRS}
             ${LIB_INSTALL_DIR}
             /opt/intel/mkl/lib/ia32
             /opt/intel/mkl/lib/intel64
@@ -113,7 +103,6 @@ ELSE(PC_LAPACKE_FOUND)
            LAPACK_LIB
             NAMES "lapack" "liblapack" "openblas" "mkl_rt"
             PATHS
-            ${PC_LAPACKE_LIBRARY_DIRS}
             ${LIB_INSTALL_DIR}
             /opt/intel/mkl/lib/ia32
             /opt/intel/mkl/lib/intel64
@@ -129,7 +118,6 @@ ELSE(PC_LAPACKE_FOUND)
             LAPACKE_INCLUDES
             NAMES "lapacke.h" "mkl_lapacke.h"
             PATHS
-            ${PC_LAPACKE_INCLUDE_DIRS}
             ${INCLUDE_INSTALL_DIR}
             /opt/intel/mkl/include
             /usr/include
@@ -141,17 +129,15 @@ ELSE(PC_LAPACKE_FOUND)
             lapacke
             )
     ENDIF(LAPACKE_ROOT_DIR)
+    SET(LAPACKE_INCLUDE_DIRS ${LAPACKE_INCLUDES})
+    SET(LAPACKE_LIBRARIES ${LAPACKE_LIB} ${LAPACK_LIB})
+    MARK_AS_ADVANCED(LAPACKE_INCLUDES LAPACKE_LIB LAPACK_LIB)
 ENDIF(PC_LAPACKE_FOUND)
 
-IF(LAPACKE_LIB AND LAPACK_LIB)
-    SET(LAPACK_LIBRARIES ${LAPACKE_LIB} ${LAPACK_LIB})
-ENDIF()
-IF(LAPACKE_INCLUDES)
-    SET(LAPACK_INCLUDE_DIR ${LAPACKE_INCLUDES})
-ENDIF()
-
 INCLUDE(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(LAPACK DEFAULT_MSG
-  LAPACK_INCLUDE_DIR LAPACK_LIBRARIES)
-
-MARK_AS_ADVANCED(LAPACK_INCLUDES LAPACK_LIBRARIES)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LAPACKE DEFAULT_MSG
+                                  LAPACKE_LIBRARIES
+                                  LAPACKE_INCLUDE_DIRS)
+MARK_AS_ADVANCED(LAPACKE_LIBRARIES
+                 LAPACKE_INCLUDE_DIRS
+                 LAPACKE_LIBRARY_DIRS)
diff --git a/src/backend/cpu/CMakeLists.txt b/src/backend/cpu/CMakeLists.txt
index ea57269..efe50a0 100644
--- a/src/backend/cpu/CMakeLists.txt
+++ b/src/backend/cpu/CMakeLists.txt
@@ -55,7 +55,7 @@ MESSAGE(STATUS "FFTW Library: ${FFTW_LIBRARIES}")
 
 IF(APPLE)
     FIND_PACKAGE(LAPACKE QUIET) # For finding MKL
-    IF(NOT LAPACK_FOUND)
+    IF(NOT LAPACKE_FOUND)
         # UNSET THE VARIABLES FROM LAPACKE
         UNSET(LAPACKE_LIB CACHE)
         UNSET(LAPACK_LIB CACHE)
@@ -67,11 +67,10 @@ ELSE(APPLE) # Linux and Windows
     FIND_PACKAGE(LAPACKE)
 ENDIF(APPLE)
 
-IF(NOT LAPACK_FOUND)
-    MESSAGE(WARNING "LAPACK not found. Functionality will be disabled")
-ELSE(NOT LAPACK_FOUND)
+IF(NOT LAPACKE_FOUND)
+    MESSAGE(WARNING "LAPACKE not found. Functionality will be disabled")
+ELSE(NOT LAPACKE_FOUND)
     ADD_DEFINITIONS(-DWITH_CPU_LINEAR_ALGEBRA)
-    MESSAGE(STATUS "LAPACK libraries found: ${LAPACK_LIBRARIES}")
 ENDIF()
 
 IF(NOT UNIX)
@@ -99,8 +98,9 @@ INCLUDE_DIRECTORIES(
     ${CBLAS_INCLUDE_DIR}
     )
 
-IF(LAPACK_FOUND)
-    INCLUDE_DIRECTORIES(${LAPACK_INCLUDE_DIR})
+IF(LAPACKE_FOUND)
+    INCLUDE_DIRECTORIES(${LAPACKE_INCLUDE_DIRS})
+    LINK_DIRECTORIES(${LAPACKE_LIBRARY_DIRS})
 ENDIF()
 
 FILE(GLOB cpu_headers
@@ -213,8 +213,8 @@ IF(FORGE_FOUND AND NOT USE_SYSTEM_FORGE)
   ADD_DEPENDENCIES(afcpu forge)
 ENDIF()
 
-IF(LAPACK_FOUND)
-   TARGET_LINK_LIBRARIES(afcpu  PRIVATE ${LAPACK_LIBRARIES})
+IF(LAPACKE_FOUND)
+   TARGET_LINK_LIBRARIES(afcpu  PRIVATE ${LAPACKE_LIBRARIES})
 ENDIF()
 
 IF(FORGE_FOUND)
diff --git a/src/backend/cuda/CMakeLists.txt b/src/backend/cuda/CMakeLists.txt
index 4efb427..24c6544 100644
--- a/src/backend/cuda/CMakeLists.txt
+++ b/src/backend/cuda/CMakeLists.txt
@@ -105,7 +105,7 @@ ELSE(CUDA_cusolver_LIBRARY)
         ## Try to use CPU side lapack
         IF(APPLE)
             FIND_PACKAGE(LAPACKE QUIET) # For finding MKL
-            IF(NOT LAPACK_FOUND)
+            IF(NOT LAPACKE_FOUND)
                 # UNSET THE VARIABLES FROM LAPACKE
                 UNSET(LAPACKE_LIB CACHE)
                 UNSET(LAPACK_LIB CACHE)
@@ -117,9 +117,9 @@ ELSE(CUDA_cusolver_LIBRARY)
             FIND_PACKAGE(LAPACKE)
         ENDIF(APPLE)
 
-        IF(NOT LAPACK_FOUND)
+        IF(NOT LAPACKE_FOUND)
             MESSAGE(STATUS "CUDA Version ${CUDA_VERSION_STRING} does not contain cusolver library. Linear Algebra will not be available.")
-        ELSE(NOT LAPACK_FOUND)
+        ELSE(NOT LAPACKE_FOUND)
             MESSAGE(STATUS "CUDA Version ${CUDA_VERSION_STRING} does not contain cusolver library. But CPU LAPACK libraries are available. Will fallback to using host side code.")
             ADD_DEFINITIONS(-DWITH_CPU_LINEAR_ALGEBRA)
             IF(USE_CUDA_MKL) # Manual MKL Setup
@@ -148,7 +148,8 @@ INCLUDE_DIRECTORIES(
     )
 
 IF(CUDA_LAPACK_CPU_FALLBACK)
-  INCLUDE_DIRECTORIES(${LAPACK_INCLUDE_DIR})
+  INCLUDE_DIRECTORIES(${LAPACKE_INCLUDE_DIRS})
+  LINK_DIRECTORIES(${LAPACKE_LIBRARY_DIRS})
 ENDIF()
 
 FILE(GLOB cuda_headers
@@ -379,7 +380,7 @@ ENDIF()
 IF(CUDA_cusolver_LIBRARY)
     TARGET_LINK_LIBRARIES(afcuda PRIVATE ${CUDA_cusolver_LIBRARY})
 ELSEIF(CUDA_LAPACK_CPU_FALLBACK)
-    TARGET_LINK_LIBRARIES(afcuda PRIVATE ${LAPACK_LIBRARIES})
+    TARGET_LINK_LIBRARIES(afcuda PRIVATE ${LAPACKE_LIBRARIES})
 ENDIF()
 
 SET_TARGET_PROPERTIES(afcuda PROPERTIES
diff --git a/src/backend/opencl/CMakeLists.txt b/src/backend/opencl/CMakeLists.txt
index 71247ce..ded53bf 100644
--- a/src/backend/opencl/CMakeLists.txt
+++ b/src/backend/opencl/CMakeLists.txt
@@ -12,7 +12,7 @@ ENDIF()
 
 IF(APPLE)
     FIND_PACKAGE(LAPACKE QUIET) # For finding MKL
-    IF(NOT LAPACK_FOUND)
+    IF(NOT LAPACKE_FOUND)
         # UNSET THE VARIABLES FROM LAPACKE
         UNSET(LAPACKE_LIB CACHE)
         UNSET(LAPACK_LIB CACHE)
@@ -24,9 +24,9 @@ ELSE(APPLE) # Linux and Windows
     FIND_PACKAGE(LAPACKE)
 ENDIF(APPLE)
 
-IF(NOT LAPACK_FOUND)
-    MESSAGE(WARNING "LAPACK not found. Functionality will be disabled")
-ELSE(NOT LAPACK_FOUND)
+IF(NOT LAPACKE_FOUND)
+    MESSAGE(WARNING "LAPACKE not found. Functionality will be disabled")
+ELSE(NOT LAPACKE_FOUND)
   ADD_DEFINITIONS(-DWITH_OPENCL_LINEAR_ALGEBRA)
 
   IF(NOT USE_OPENCL_MKL)
@@ -105,8 +105,9 @@ INCLUDE_DIRECTORIES(
     ${BoostCompute_INCLUDE_DIRS}
     ${CBLAS_INCLUDE_DIR}
     )
-IF(LAPACK_FOUND)
-    INCLUDE_DIRECTORIES(${LAPACK_INCLUDE_DIR})
+IF(LAPACKE_FOUND)
+    INCLUDE_DIRECTORIES(${LAPACKE_INCLUDE_DIRS})
+    LINK_DIRECTORIES(${LAPACKE_LIBRARY_DIRS})
 ENDIF()
 
 FILE(GLOB opencl_headers
@@ -163,7 +164,7 @@ source_group(backend\\opencl\\kernel\\convolve\\Sources FILES ${conv_ker_sources
 source_group(backend\\opencl\\cpu\\Headers FILES ${cpu_headers})
 source_group(backend\\opencl\\cpu\\Sources FILES ${cpu_sources})
 
-IF(LAPACK_FOUND)
+IF(LAPACKE_FOUND)
     FILE(GLOB magma_sources
         "magma/*.cpp")
 
@@ -313,9 +314,9 @@ IF(FORGE_FOUND AND NOT USE_SYSTEM_FORGE)
     ADD_DEPENDENCIES(afopencl forge)
 ENDIF()
 
-IF(LAPACK_FOUND)
+IF(LAPACKE_FOUND)
   TARGET_LINK_LIBRARIES(afopencl
-    PRIVATE ${LAPACK_LIBRARIES}
+    PRIVATE ${LAPACKE_LIBRARIES}
     PRIVATE ${CBLAS_LIBRARIES})
 ENDIF()