| # 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 list of conditions and the following disclaimer. | |
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| # this list of conditions and the following disclaimer in the documentation | |
| # and/or other materials provided with the distribution. | |
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| # specific prior written permission. | |
| # | |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
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| # POSSIBILITY OF SUCH DAMAGE. | |
| # | |
| # 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_INCLUDE_DIR AND CXSparse_LIBRARY) | |
| 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_INCLUDE_DIR AND CXSparse_LIBRARY) |