|  | # Ceres Solver - A fast non-linear least squares minimizer | 
|  | # Copyright 2022 Google Inc. All rights reserved. | 
|  | # http://ceres-solver.org/ | 
|  | # | 
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|  | # modification, are permitted provided that the following conditions are met: | 
|  | # | 
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|  | # | 
|  | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | 
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|  | # | 
|  | # Author: alexs.mac@gmail.com (Alex Stewart) | 
|  | # | 
|  |  | 
|  | #[=======================================================================[.rst: | 
|  | FindCXSparse | 
|  | ============ | 
|  |  | 
|  | Find CXSparse and its dependencies. | 
|  |  | 
|  | This module defines the following variables which should be referenced by the | 
|  | caller to use the library. | 
|  |  | 
|  | ``CXSparse_FOUND`` | 
|  | ``TRUE`` iff CXSparse and all dependencies have been found. | 
|  |  | 
|  | ``CXSparse_VERSION`` | 
|  | Extracted from ``cs.h``. | 
|  |  | 
|  | ``CXSparse_VERSION_MAJOR`` | 
|  | Equal to 3 if ``CXSparse_VERSION`` = 3.1.2 | 
|  |  | 
|  | ``CXSparse_VERSION_MINOR`` | 
|  | Equal to 1 if ``CXSparse_VERSION`` = 3.1.2 | 
|  |  | 
|  | ``CXSparse_VERSION_PATCH`` | 
|  | Equal to 2 if ``CXSparse_VERSION`` = 3.1.2 | 
|  |  | 
|  | The following variables control the behaviour of this module: | 
|  |  | 
|  | ``CXSparse_NO_CMAKE`` | 
|  | Do not attempt to use the native CXSparse CMake package configuration. | 
|  |  | 
|  | Targets | 
|  | ------- | 
|  |  | 
|  | The following target defines CXSparse. | 
|  |  | 
|  | ``CXSparse::CXSparse`` | 
|  | The main CXSparse to be linked against. | 
|  |  | 
|  | The following variables are also defined by this module, but in line with CMake | 
|  | recommended ``find_package`` module style should NOT be referenced directly by | 
|  | callers (use the plural variables detailed above instead).  These variables do | 
|  | however affect the behaviour of the module via ``find_[path/library]()`` which | 
|  | are NOT re-called (i.e., search for library is not repeated) if these variables | 
|  | are set with valid values *in the CMake cache*. This means that if these | 
|  | variables are set directly in the cache, either by the user in the CMake GUI, or | 
|  | by the user passing ``-DVAR=VALUE`` directives to CMake when called (which | 
|  | explicitly defines a cache variable), then they will be used verbatim, bypassing | 
|  | the ``HINTS`` variables and other hard-coded search locations. | 
|  |  | 
|  | ``CXSparse_INCLUDE_DIR`` | 
|  | Include directory for CXSparse, not including the include directory of any | 
|  | dependencies. | 
|  |  | 
|  | ``CXSparse_LIBRARY`` | 
|  | CXSparse library, not including the libraries of any dependencies. | 
|  | ]=======================================================================] | 
|  |  | 
|  | if (NOT CXSparse_NO_CMAKE) | 
|  | find_package (CXSparse NO_MODULE QUIET) | 
|  | endif (NOT CXSparse_NO_CMAKE) | 
|  |  | 
|  | if (CXSparse_FOUND) | 
|  | return () | 
|  | endif (CXSparse_FOUND) | 
|  |  | 
|  | # Reset CALLERS_CMAKE_FIND_LIBRARY_PREFIXES to its value when | 
|  | # FindCXSparse was invoked. | 
|  | macro(CXSparse_RESET_FIND_LIBRARY_PREFIX) | 
|  | if (MSVC) | 
|  | set(CMAKE_FIND_LIBRARY_PREFIXES "${CALLERS_CMAKE_FIND_LIBRARY_PREFIXES}") | 
|  | endif (MSVC) | 
|  | endmacro(CXSparse_RESET_FIND_LIBRARY_PREFIX) | 
|  |  | 
|  | # Called if we failed to find CXSparse or any of it's required dependencies, | 
|  | # unsets all public (designed to be used externally) variables and reports | 
|  | # error message at priority depending upon [REQUIRED/QUIET/<NONE>] argument. | 
|  | macro(CXSparse_REPORT_NOT_FOUND REASON_MSG) | 
|  | # Make results of search visible in the CMake GUI if CXSparse has not | 
|  | # been found so that user does not have to toggle to advanced view. | 
|  | mark_as_advanced(CLEAR CXSparse_INCLUDE_DIR | 
|  | CXSparse_LIBRARY) | 
|  |  | 
|  | cxsparse_reset_find_library_prefix() | 
|  |  | 
|  | # Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by FindPackage() | 
|  | # use the camelcase library name, not uppercase. | 
|  | if (CXSparse_FIND_QUIETLY) | 
|  | message(STATUS "Failed to find CXSparse - " ${REASON_MSG} ${ARGN}) | 
|  | elseif (CXSparse_FIND_REQUIRED) | 
|  | message(FATAL_ERROR "Failed to find CXSparse - " ${REASON_MSG} ${ARGN}) | 
|  | else() | 
|  | # Neither QUIETLY nor REQUIRED, use no priority which emits a message | 
|  | # but continues configuration and allows generation. | 
|  | message("-- Failed to find CXSparse - " ${REASON_MSG} ${ARGN}) | 
|  | endif () | 
|  | return() | 
|  | endmacro(CXSparse_REPORT_NOT_FOUND) | 
|  |  | 
|  | # Handle possible presence of lib prefix for libraries on MSVC, see | 
|  | # also CXSparse_RESET_FIND_LIBRARY_PREFIX(). | 
|  | if (MSVC) | 
|  | # Preserve the caller's original values for CMAKE_FIND_LIBRARY_PREFIXES | 
|  | # s/t we can set it back before returning. | 
|  | set(CALLERS_CMAKE_FIND_LIBRARY_PREFIXES "${CMAKE_FIND_LIBRARY_PREFIXES}") | 
|  | # The empty string in this list is important, it represents the case when | 
|  | # the libraries have no prefix (shared libraries / DLLs). | 
|  | set(CMAKE_FIND_LIBRARY_PREFIXES "lib" "" "${CMAKE_FIND_LIBRARY_PREFIXES}") | 
|  | endif (MSVC) | 
|  |  | 
|  | # Additional suffixes to try appending to each search path. | 
|  | list(APPEND CXSparse_CHECK_PATH_SUFFIXES | 
|  | suitesparse) # Linux/Windows | 
|  |  | 
|  | # Search supplied hint directories first if supplied. | 
|  | find_path(CXSparse_INCLUDE_DIR | 
|  | NAMES cs.h | 
|  | PATH_SUFFIXES ${CXSparse_CHECK_PATH_SUFFIXES}) | 
|  | if (NOT CXSparse_INCLUDE_DIR OR | 
|  | NOT EXISTS ${CXSparse_INCLUDE_DIR}) | 
|  | cxsparse_report_not_found( | 
|  | "Could not find CXSparse include directory, set CXSparse_INCLUDE_DIR " | 
|  | "to directory containing cs.h") | 
|  | endif (NOT CXSparse_INCLUDE_DIR OR | 
|  | NOT EXISTS ${CXSparse_INCLUDE_DIR}) | 
|  |  | 
|  | find_library(CXSparse_LIBRARY NAMES cxsparse | 
|  | PATH_SUFFIXES ${CXSparse_CHECK_PATH_SUFFIXES}) | 
|  |  | 
|  | if (NOT CXSparse_LIBRARY OR | 
|  | NOT EXISTS ${CXSparse_LIBRARY}) | 
|  | cxsparse_report_not_found( | 
|  | "Could not find CXSparse library, set CXSparse_LIBRARY " | 
|  | "to full path to libcxsparse.") | 
|  | endif (NOT CXSparse_LIBRARY OR | 
|  | NOT EXISTS ${CXSparse_LIBRARY}) | 
|  |  | 
|  | # Mark internally as found, then verify. CXSparse_REPORT_NOT_FOUND() unsets | 
|  | # if called. | 
|  | set(CXSparse_FOUND TRUE) | 
|  |  | 
|  | # Extract CXSparse version from cs.h | 
|  | if (CXSparse_INCLUDE_DIR) | 
|  | set(CXSparse_VERSION_FILE ${CXSparse_INCLUDE_DIR}/cs.h) | 
|  | if (NOT EXISTS ${CXSparse_VERSION_FILE}) | 
|  | cxsparse_report_not_found( | 
|  | "Could not find file: ${CXSparse_VERSION_FILE} " | 
|  | "containing version information in CXSparse install located at: " | 
|  | "${CXSparse_INCLUDE_DIR}.") | 
|  | else (NOT EXISTS ${CXSparse_VERSION_FILE}) | 
|  | file(READ ${CXSparse_INCLUDE_DIR}/cs.h CXSparse_VERSION_FILE_CONTENTS) | 
|  |  | 
|  | string(REGEX MATCH "#define CS_VER [0-9]+" | 
|  | CXSparse_VERSION_MAJOR "${CXSparse_VERSION_FILE_CONTENTS}") | 
|  | string(REGEX REPLACE "#define CS_VER ([0-9]+)" "\\1" | 
|  | CXSparse_VERSION_MAJOR "${CXSparse_VERSION_MAJOR}") | 
|  |  | 
|  | string(REGEX MATCH "#define CS_SUBVER [0-9]+" | 
|  | CXSparse_VERSION_MINOR "${CXSparse_VERSION_FILE_CONTENTS}") | 
|  | string(REGEX REPLACE "#define CS_SUBVER ([0-9]+)" "\\1" | 
|  | CXSparse_VERSION_MINOR "${CXSparse_VERSION_MINOR}") | 
|  |  | 
|  | string(REGEX MATCH "#define CS_SUBSUB [0-9]+" | 
|  | CXSparse_VERSION_PATCH "${CXSparse_VERSION_FILE_CONTENTS}") | 
|  | string(REGEX REPLACE "#define CS_SUBSUB ([0-9]+)" "\\1" | 
|  | CXSparse_VERSION_PATCH "${CXSparse_VERSION_PATCH}") | 
|  |  | 
|  | # This is on a single line s/t CMake does not interpret it as a list of | 
|  | # elements and insert ';' separators which would result in 3.;1.;2 nonsense. | 
|  | set(CXSparse_VERSION "${CXSparse_VERSION_MAJOR}.${CXSparse_VERSION_MINOR}.${CXSparse_VERSION_PATCH}") | 
|  | set(CXSparse_VERSION_COMPONENTS 3) | 
|  | endif (NOT EXISTS ${CXSparse_VERSION_FILE}) | 
|  | endif (CXSparse_INCLUDE_DIR) | 
|  |  | 
|  | # Catch the case when the caller has set CXSparse_LIBRARY in the cache / GUI and | 
|  | # thus FIND_LIBRARY was not called, but specified library is invalid, otherwise | 
|  | # we would report CXSparse as found. | 
|  | # TODO: This regex for CXSparse library is pretty primitive, we use lowercase | 
|  | #       for comparison to handle Windows using CamelCase library names, could | 
|  | #       this check be better? | 
|  | string(TOLOWER "${CXSparse_LIBRARY}" LOWERCASE_CXSparse_LIBRARY) | 
|  | if (CXSparse_LIBRARY AND | 
|  | EXISTS ${CXSparse_LIBRARY} AND | 
|  | NOT "${LOWERCASE_CXSparse_LIBRARY}" MATCHES ".*cxsparse[^/]*") | 
|  | cxsparse_report_not_found( | 
|  | "Caller defined CXSparse_LIBRARY: " | 
|  | "${CXSparse_LIBRARY} does not match CXSparse.") | 
|  | endif (CXSparse_LIBRARY AND | 
|  | EXISTS ${CXSparse_LIBRARY} AND | 
|  | NOT "${LOWERCASE_CXSparse_LIBRARY}" MATCHES ".*cxsparse[^/]*") | 
|  |  | 
|  | cxsparse_reset_find_library_prefix() | 
|  |  | 
|  | mark_as_advanced(CXSparse_INCLUDE_DIR CXSparse_LIBRARY) | 
|  |  | 
|  | # Handle REQUIRED / QUIET optional arguments and version. | 
|  | include(FindPackageHandleStandardArgs) | 
|  | find_package_handle_standard_args(CXSparse | 
|  | REQUIRED_VARS CXSparse_INCLUDE_DIR CXSparse_LIBRARY | 
|  | VERSION_VAR CXSparse_VERSION) | 
|  |  | 
|  | if (CXSparse_FOUND) | 
|  | if (NOT TARGET CXSparse::CXSparse) | 
|  | add_library (CXSparse::CXSparse IMPORTED UNKNOWN) | 
|  | endif (NOT TARGET CXSparse::CXSparse) | 
|  |  | 
|  | set_property (TARGET CXSparse::CXSparse PROPERTY | 
|  | IMPORTED_LOCATION ${CXSparse_LIBRARY}) | 
|  | set_property (TARGET CXSparse::CXSparse PROPERTY | 
|  | INTERFACE_INCLUDE_DIRECTORIES ${CXSparse_INCLUDE_DIR}) | 
|  | endif (CXSparse_FOUND) |