Make LAPACK_TEST_FUNCTIONS overridable

FindLAPACK.cmake

@@ -16,6 +16,14 @@ if( "ilp64" IN_LIST LAPACK_FIND_COMPONENTS AND "lp64" IN_LIST LAPACK_FIND_COMPON
   message( FATAL_ERROR "LAPACK cannot link to both ILP64 and LP64 interfaces" )
 endif()
 
+# List of functions to check for valid LAPACK - overridable
+if( NOT LAPACK_TEST_FUNCTIONS )
+  # use dpstrf to check for full LAPACK API ... some implementations are incomplete (e.g. older OpenBLAS)
+  # also need to handle several corner cases:
+  # - OpenBLAS needs libgfortran only for some functions, dpstrf is not one of them, so check for dgesvd
+  set( LAPACK_TEST_FUNCTIONS "dpstrf;dgesvd" )
+endif()
+
 
 # Get list of required / optional components
 foreach( _comp ${LAPACK_FIND_COMPONENTS} )
@@ -50,10 +58,8 @@ if( NOT LAPACK_LIBRARIES )
   set( LAPACK_INCLUDE_DIRS        ${BLAS_INCLUDE_DIRS}        )
   set( LAPACK_COMPILE_DEFINITIONS ${BLAS_COMPILE_DEFINITIONS} )
 
-  # use dpstrf to check for full LAPACK API ... some implementations are incomplete (e.g. older OpenBLAS)
-  # also need to handle several corner cases:
-  # - OpenBLAS needs libgfortran only for some functions, dpstrf is not one of them, so check for dgesvd
-  check_fortran_functions_exist( "dpstrf;dgesvd" LAPACK LAPACK_LIBRARIES
+  # Check for required LAPACK functions
+  check_fortran_functions_exist( "${LAPACK_TEST_FUNCTIONS}" LAPACK LAPACK_LIBRARIES
           BLAS_HAS_LAPACK LAPACK_Fortran_LOWER LAPACK_Fortran_UNDERSCORE
           )
 
@@ -123,8 +129,8 @@ endif()
 if( BLAS_HAS_LAPACK )
   set( LAPACK_LINK_OK TRUE )
 else()
-  # see notes above the first invocation of check_fortran_functions_exist
-  check_fortran_functions_exist( "dpstrf;dgesvd" LAPACK LAPACK_LIBRARIES
+  # Check for required LAPACK functions
+  check_fortran_functions_exist( "${LAPACK_TEST_FUNCTIONS}" LAPACK LAPACK_LIBRARIES
           LAPACK_LINK_OK LAPACK_Fortran_LOWER LAPACK_Fortran_UNDERSCORE
           )
 endif()

FindOpenBLAS.cmake

@@ -18,18 +18,18 @@ find_library( OpenBLAS_LIBRARIES
 )
 
 find_path( OpenBLAS_INCLUDE_DIR
-  NAMES openblas_config.h
+  NAMES openblas/openblas_config.h openblas_config.h
   HINTS ${OpenBLAS_PREFIX}
   PATHS ${OpenBLAS_INCLUDE_DIR}
   PATH_SUFFIXES include
   DOC "OpenBLAS header"
 )
 
-#if( OpenBLAS_LIBRARY AND OpenBLAS_PREFERS_STATIC )
-#  include( CMakeFindDependency )
-#  find_package( Threads QUIET )
-#  set( OpenBLAS_LIBRARIES ${OpenBLAS_LIBRARY} Threads::Threads "m")
-#endif()
+if( OpenBLAS_LIBRARY AND OpenBLAS_PREFERS_STATIC )
+  include( CMakeFindDependency )
+  find_package( Threads QUIET )
+  set( OpenBLAS_LIBRARIES ${OpenBLAS_LIBRARY} Threads::Threads "m")
+endif()
 
 # check ILP64
 if( OpenBLAS_INCLUDE_DIR )
@@ -42,6 +42,8 @@ if( OpenBLAS_INCLUDE_DIR )
     COMPILE_OUTPUT_VARIABLE _openblas_idx_compile_output
     RUN_OUTPUT_VARIABLE     _openblas_idx_run_output
   )
+  message( STATUS ${_openblas_idx_compile_output} )
+  message( STATUS ${_openblas_idx_run_output} )
 
   if( ${OpenBLAS_USES_LP64} EQUAL 0 )
     set( OpenBLAS_USES_LP64 TRUE )
@@ -67,12 +69,12 @@ find_package_handle_standard_args( OpenBLAS
   HANDLE_COMPONENTS
 )
 
-#if( OpenBLAS_FOUND AND NOT TARGET OpenBLAS::OpenBLAS )
-#
-#  add_library( OpenBLAS::OpenBLAS INTERFACE IMPORTED )
-#  set_target_properties( OpenBLAS::OpenBLAS PROPERTIES
-#    INTERFACE_INCLUDE_DIRECTORIES "${OpenBLAS_INCLUDE_DIR}"
-#    INTERFACE_LINK_LIBRARIES      "${OpenBLAS_LIBRARIES}"
-#  )
-#
-#endif()
+if( OpenBLAS_FOUND AND NOT TARGET OpenBLAS::OpenBLAS )
+
+  add_library( OpenBLAS::OpenBLAS INTERFACE IMPORTED )
+  set_target_properties( OpenBLAS::OpenBLAS PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES "${OpenBLAS_INCLUDE_DIR}"
+    INTERFACE_LINK_LIBRARIES      "${OpenBLAS_LIBRARIES}"
+  )
+
+endif()

util/openblas_int_size.c

@@ -1,6 +1,10 @@
+#if __has_include(<openblas_config.h>)
 #include <openblas_config.h>
+#else
+#include <openblas/openblas_config.h>
+#endif
 
-int main() {
+int main(int argc, char** argv) {
   int blis_int_size = sizeof(blasint)*8;
   if( blis_int_size == 32 ) return 0;
   else                      return 1;