Add missing CMake modules.

These are required for getting BLAS configured.

cmake/Modules/CMakePushCheckState.cmake

@@ -0,0 +1,86 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#.rst:
+# CMakePushCheckState
+# -------------------
+#
+#
+#
+# This module defines three macros: CMAKE_PUSH_CHECK_STATE()
+# CMAKE_POP_CHECK_STATE() and CMAKE_RESET_CHECK_STATE() These macros can
+# be used to save, restore and reset (i.e., clear contents) the state of
+# the variables CMAKE_REQUIRED_FLAGS, CMAKE_REQUIRED_DEFINITIONS,
+# CMAKE_REQUIRED_LIBRARIES, CMAKE_REQUIRED_INCLUDES and CMAKE_EXTRA_INCLUDE_FILES
+# used by the various Check-files coming with CMake, like e.g.
+# check_function_exists() etc.  The variable contents are pushed on a
+# stack, pushing multiple times is supported.  This is useful e.g.  when
+# executing such tests in a Find-module, where they have to be set, but
+# after the Find-module has been executed they should have the same
+# value as they had before.
+#
+# CMAKE_PUSH_CHECK_STATE() macro receives optional argument RESET.
+# Whether it's specified, CMAKE_PUSH_CHECK_STATE() will set all
+# CMAKE_REQUIRED_* variables to empty values, same as
+# CMAKE_RESET_CHECK_STATE() call will do.
+#
+# Usage:
+#
+# ::
+#
+#    cmake_push_check_state(RESET)
+#    set(CMAKE_REQUIRED_DEFINITIONS -DSOME_MORE_DEF)
+#    check_function_exists(...)
+#    cmake_reset_check_state()
+#    set(CMAKE_REQUIRED_DEFINITIONS -DANOTHER_DEF)
+#    check_function_exists(...)
+#    cmake_pop_check_state()
+
+macro(CMAKE_RESET_CHECK_STATE)
+
+   set(CMAKE_EXTRA_INCLUDE_FILES)
+   set(CMAKE_REQUIRED_INCLUDES)
+   set(CMAKE_REQUIRED_DEFINITIONS)
+   set(CMAKE_REQUIRED_LIBRARIES)
+   set(CMAKE_REQUIRED_FLAGS)
+   set(CMAKE_REQUIRED_QUIET)
+
+endmacro()
+
+macro(CMAKE_PUSH_CHECK_STATE)
+
+   if(NOT DEFINED _CMAKE_PUSH_CHECK_STATE_COUNTER)
+      set(_CMAKE_PUSH_CHECK_STATE_COUNTER 0)
+   endif()
+
+   math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}+1")
+
+   set(_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}  ${CMAKE_EXTRA_INCLUDE_FILES})
+   set(_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}    ${CMAKE_REQUIRED_INCLUDES})
+   set(_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER} ${CMAKE_REQUIRED_DEFINITIONS})
+   set(_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}   ${CMAKE_REQUIRED_LIBRARIES})
+   set(_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}       ${CMAKE_REQUIRED_FLAGS})
+   set(_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}       ${CMAKE_REQUIRED_QUIET})
+
+   if (${ARGC} GREATER 0 AND "${ARGV0}" STREQUAL "RESET")
+      cmake_reset_check_state()
+   endif()
+
+endmacro()
+
+macro(CMAKE_POP_CHECK_STATE)
+
+# don't pop more than we pushed
+   if("${_CMAKE_PUSH_CHECK_STATE_COUNTER}" GREATER "0")
+
+      set(CMAKE_EXTRA_INCLUDE_FILES  ${_CMAKE_EXTRA_INCLUDE_FILES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+      set(CMAKE_REQUIRED_INCLUDES    ${_CMAKE_REQUIRED_INCLUDES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+      set(CMAKE_REQUIRED_DEFINITIONS ${_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+      set(CMAKE_REQUIRED_LIBRARIES   ${_CMAKE_REQUIRED_LIBRARIES_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+      set(CMAKE_REQUIRED_FLAGS       ${_CMAKE_REQUIRED_FLAGS_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+      set(CMAKE_REQUIRED_QUIET       ${_CMAKE_REQUIRED_QUIET_SAVE_${_CMAKE_PUSH_CHECK_STATE_COUNTER}})
+
+      math(EXPR _CMAKE_PUSH_CHECK_STATE_COUNTER "${_CMAKE_PUSH_CHECK_STATE_COUNTER}-1")
+   endif()
+
+endmacro()

cmake/Modules/CheckFortranFunctionExists.cmake

@@ -0,0 +1,66 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#.rst:
+# CheckFortranFunctionExists
+# --------------------------
+#
+# macro which checks if the Fortran function exists
+#
+# CHECK_FORTRAN_FUNCTION_EXISTS(FUNCTION VARIABLE)
+#
+# ::
+#
+#   FUNCTION - the name of the Fortran function
+#   VARIABLE - variable to store the result
+#              Will be created as an internal cache variable.
+#
+#
+#
+# The following variables may be set before calling this macro to modify
+# the way the check is run:
+#
+# ::
+#
+#   CMAKE_REQUIRED_LIBRARIES = list of libraries to link
+
+macro(CHECK_FORTRAN_FUNCTION_EXISTS FUNCTION VARIABLE)
+  if(NOT DEFINED ${VARIABLE})
+    message(STATUS "Looking for Fortran ${FUNCTION}")
+    if(CMAKE_REQUIRED_LIBRARIES)
+      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
+        LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
+    else()
+      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
+    endif()
+    file(WRITE
+    ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
+    "
+      program TESTFortran
+      external ${FUNCTION}
+      call ${FUNCTION}()
+      end program TESTFortran
+    "
+    )
+    try_compile(${VARIABLE}
+    ${CMAKE_BINARY_DIR}
+    ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler.f
+    ${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}
+    OUTPUT_VARIABLE OUTPUT
+    )
+#    message(STATUS "${OUTPUT}")
+    if(${VARIABLE})
+      set(${VARIABLE} 1 CACHE INTERNAL "Have Fortran function ${FUNCTION}")
+      message(STATUS "Looking for Fortran ${FUNCTION} - found")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Determining if the Fortran ${FUNCTION} exists passed with the following output:\n"
+        "${OUTPUT}\n\n")
+    else()
+      message(STATUS "Looking for Fortran ${FUNCTION} - not found")
+      set(${VARIABLE} "" CACHE INTERNAL "Have Fortran function ${FUNCTION}")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Determining if the Fortran ${FUNCTION} exists failed with the following output:\n"
+        "${OUTPUT}\n\n")
+    endif()
+  endif()
+endmacro()

cmake/Modules/CheckFunctionExists.cmake

@@ -0,0 +1,98 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#.rst:
+# CheckFunctionExists
+# -------------------
+#
+# Check if a C function can be linked::
+#
+#   check_function_exists(<function> <variable>)
+#
+# Check that the ``<function>`` is provided by libraries on the system and store
+# the result in a ``<variable>``. ``<variable>`` will be created as an internal
+# cache variable.
+#
+# The following variables may be set before calling this macro to modify the
+# way the check is run:
+#
+# ::
+#
+#   CMAKE_REQUIRED_FLAGS = string of compile command line flags
+#   CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
+#   CMAKE_REQUIRED_INCLUDES = list of include directories
+#   CMAKE_REQUIRED_LIBRARIES = list of libraries to link
+#   CMAKE_REQUIRED_QUIET = execute quietly without messages
+#
+# .. note::
+#
+#   Prefer using :Module:`CheckSymbolExists` instead of this module,
+#   for the following reasons:
+#
+#   * ``check_function_exists()`` can't detect functions that are inlined
+#     in headers or specified as a macro.
+#
+#   * ``check_function_exists()`` can't detect anything in the 32-bit
+#     versions of the Win32 API, because of a mismatch in calling conventions.
+#
+#   * ``check_function_exists()`` only verifies linking, it does not verify
+#     that the function is declared in system headers.
+
+macro(CHECK_FUNCTION_EXISTS FUNCTION VARIABLE)
+  if(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}")
+    set(MACRO_CHECK_FUNCTION_DEFINITIONS
+      "-DCHECK_FUNCTION_EXISTS=${FUNCTION} ${CMAKE_REQUIRED_FLAGS}")
+    if(NOT CMAKE_REQUIRED_QUIET)
+      message(STATUS "Looking for ${FUNCTION}")
+    endif()
+    if(CMAKE_REQUIRED_LIBRARIES)
+      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
+        LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
+    else()
+      set(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES)
+    endif()
+    if(CMAKE_REQUIRED_INCLUDES)
+      set(CHECK_FUNCTION_EXISTS_ADD_INCLUDES
+        "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
+    else()
+      set(CHECK_FUNCTION_EXISTS_ADD_INCLUDES)
+    endif()
+
+    if(CMAKE_C_COMPILER_LOADED)
+      set(_cfe_source ${CMAKE_ROOT}/Modules/CheckFunctionExists.c)
+    elseif(CMAKE_CXX_COMPILER_LOADED)
+      set(_cfe_source ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckFunctionExists/CheckFunctionExists.cxx)
+      configure_file(${CMAKE_ROOT}/Modules/CheckFunctionExists.c "${_cfe_source}" COPYONLY)
+    else()
+      message(FATAL_ERROR "CHECK_FUNCTION_EXISTS needs either C or CXX language enabled")
+    endif()
+
+    try_compile(${VARIABLE}
+      ${CMAKE_BINARY_DIR}
+      ${_cfe_source}
+      COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
+      ${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}
+      CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
+      "${CHECK_FUNCTION_EXISTS_ADD_INCLUDES}"
+      OUTPUT_VARIABLE OUTPUT)
+    unset(_cfe_source)
+
+    if(${VARIABLE})
+      set(${VARIABLE} 1 CACHE INTERNAL "Have function ${FUNCTION}")
+      if(NOT CMAKE_REQUIRED_QUIET)
+        message(STATUS "Looking for ${FUNCTION} - found")
+      endif()
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Determining if the function ${FUNCTION} exists passed with the following output:\n"
+        "${OUTPUT}\n\n")
+    else()
+      if(NOT CMAKE_REQUIRED_QUIET)
+        message(STATUS "Looking for ${FUNCTION} - not found")
+      endif()
+      set(${VARIABLE} "" CACHE INTERNAL "Have function ${FUNCTION}")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Determining if the function ${FUNCTION} exists failed with the following output:\n"
+        "${OUTPUT}\n\n")
+    endif()
+  endif()
+endmacro()