1 # Ceres Solver - A fast non-linear least squares minimizer
2 # Copyright 2015 Google Inc. All rights reserved.
3 # http://ceres-solver.org/
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6 # modification, are permitted provided that the following conditions are met:
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9 # this list of conditions and the following disclaimer.
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11 # this list of conditions and the following disclaimer in the documentation
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14 # used to endorse or promote products derived from this software without
15 # specific prior written permission.
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29 # Author: alexs.mac@gmail.com (Alex Stewart)
32 # FindCXSparse.cmake - Find CXSparse libraries & dependencies.
34 # This module defines the following variables which should be referenced
35 # by the caller to use the library.
37 # CXSPARSE_FOUND: TRUE iff CXSparse and all dependencies have been found.
38 # CXSPARSE_INCLUDE_DIRS: Include directories for CXSparse.
39 # CXSPARSE_LIBRARIES: Libraries for CXSparse and all dependencies.
41 # CXSPARSE_VERSION: Extracted from cs.h.
42 # CXSPARSE_MAIN_VERSION: Equal to 3 if CXSPARSE_VERSION = 3.1.2
43 # CXSPARSE_SUB_VERSION: Equal to 1 if CXSPARSE_VERSION = 3.1.2
44 # CXSPARSE_SUBSUB_VERSION: Equal to 2 if CXSPARSE_VERSION = 3.1.2
46 # The following variables control the behaviour of this module:
48 # CXSPARSE_INCLUDE_DIR_HINTS: List of additional directories in which to
49 # search for CXSparse includes,
50 # e.g: /timbuktu/include.
51 # CXSPARSE_LIBRARY_DIR_HINTS: List of additional directories in which to
52 # search for CXSparse libraries, e.g: /timbuktu/lib.
54 # The following variables are also defined by this module, but in line with
55 # CMake recommended FindPackage() module style should NOT be referenced directly
56 # by callers (use the plural variables detailed above instead). These variables
57 # do however affect the behaviour of the module via FIND_[PATH/LIBRARY]() which
58 # are NOT re-called (i.e. search for library is not repeated) if these variables
59 # are set with valid values _in the CMake cache_. This means that if these
60 # variables are set directly in the cache, either by the user in the CMake GUI,
61 # or by the user passing -DVAR=VALUE directives to CMake when called (which
62 # explicitly defines a cache variable), then they will be used verbatim,
63 # bypassing the HINTS variables and other hard-coded search locations.
65 # CXSPARSE_INCLUDE_DIR: Include directory for CXSparse, not including the
66 # include directory of any dependencies.
67 # CXSPARSE_LIBRARY: CXSparse library, not including the libraries of any
70 # Reset CALLERS_CMAKE_FIND_LIBRARY_PREFIXES to its value when
71 # FindCXSparse was invoked.
72 macro(CXSPARSE_RESET_FIND_LIBRARY_PREFIX)
74 set(CMAKE_FIND_LIBRARY_PREFIXES "${CALLERS_CMAKE_FIND_LIBRARY_PREFIXES}")
76 endmacro(CXSPARSE_RESET_FIND_LIBRARY_PREFIX)
78 # Called if we failed to find CXSparse or any of it's required dependencies,
79 # unsets all public (designed to be used externally) variables and reports
80 # error message at priority depending upon [REQUIRED/QUIET/<NONE>] argument.
81 macro(CXSPARSE_REPORT_NOT_FOUND REASON_MSG)
83 unset(CXSPARSE_INCLUDE_DIRS)
84 unset(CXSPARSE_LIBRARIES)
85 # Make results of search visible in the CMake GUI if CXSparse has not
86 # been found so that user does not have to toggle to advanced view.
87 mark_as_advanced(CLEAR CXSPARSE_INCLUDE_DIR
90 cxsparse_reset_find_library_prefix()
92 # Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by FindPackage()
93 # use the camelcase library name, not uppercase.
94 if (CXSparse_FIND_QUIETLY)
95 message(STATUS "Failed to find CXSparse - " ${REASON_MSG} ${ARGN})
96 elseif (CXSparse_FIND_REQUIRED)
97 message(FATAL_ERROR "Failed to find CXSparse - " ${REASON_MSG} ${ARGN})
99 # Neither QUIETLY nor REQUIRED, use no priority which emits a message
100 # but continues configuration and allows generation.
101 message("-- Failed to find CXSparse - " ${REASON_MSG} ${ARGN})
104 endmacro(CXSPARSE_REPORT_NOT_FOUND)
106 # Protect against any alternative find_package scripts for this library having
107 # been called previously (in a client project) which set CXSPARSE_FOUND, but not
108 # the other variables we require / set here which could cause the search logic
110 unset(CXSPARSE_FOUND)
112 # Handle possible presence of lib prefix for libraries on MSVC, see
113 # also CXSPARSE_RESET_FIND_LIBRARY_PREFIX().
115 # Preserve the caller's original values for CMAKE_FIND_LIBRARY_PREFIXES
116 # s/t we can set it back before returning.
117 set(CALLERS_CMAKE_FIND_LIBRARY_PREFIXES "${CMAKE_FIND_LIBRARY_PREFIXES}")
118 # The empty string in this list is important, it represents the case when
119 # the libraries have no prefix (shared libraries / DLLs).
120 set(CMAKE_FIND_LIBRARY_PREFIXES "lib" "" "${CMAKE_FIND_LIBRARY_PREFIXES}")
123 # Search user-installed locations first, so that we prefer user installs
124 # to system installs where both exist.
126 # TODO: Add standard Windows search locations for CXSparse.
127 list(APPEND CXSPARSE_CHECK_INCLUDE_DIRS
129 /usr/local/homebrew/include # Mac OS X
130 /opt/local/var/macports/software # Mac OS X.
133 list(APPEND CXSPARSE_CHECK_LIBRARY_DIRS
135 /usr/local/homebrew/lib # Mac OS X.
138 # Additional suffixes to try appending to each search path.
139 list(APPEND CXSPARSE_CHECK_PATH_SUFFIXES
140 suitesparse) # Linux/Windows
142 # Search supplied hint directories first if supplied.
143 find_path(CXSPARSE_INCLUDE_DIR
145 HINTS ${CXSPARSE_INCLUDE_DIR_HINTS}
146 PATHS ${CXSPARSE_CHECK_INCLUDE_DIRS}
147 PATH_SUFFIXES ${CXSPARSE_CHECK_PATH_SUFFIXES})
148 if (NOT CXSPARSE_INCLUDE_DIR OR
149 NOT EXISTS ${CXSPARSE_INCLUDE_DIR})
150 cxsparse_report_not_found(
151 "Could not find CXSparse include directory, set CXSPARSE_INCLUDE_DIR "
152 "to directory containing cs.h")
153 endif (NOT CXSPARSE_INCLUDE_DIR OR
154 NOT EXISTS ${CXSPARSE_INCLUDE_DIR})
156 find_library(CXSPARSE_LIBRARY NAMES cxsparse
157 HINTS ${CXSPARSE_LIBRARY_DIR_HINTS}
158 PATHS ${CXSPARSE_CHECK_LIBRARY_DIRS}
159 PATH_SUFFIXES ${CXSPARSE_CHECK_PATH_SUFFIXES})
160 if (NOT CXSPARSE_LIBRARY OR
161 NOT EXISTS ${CXSPARSE_LIBRARY})
162 cxsparse_report_not_found(
163 "Could not find CXSparse library, set CXSPARSE_LIBRARY "
164 "to full path to libcxsparse.")
165 endif (NOT CXSPARSE_LIBRARY OR
166 NOT EXISTS ${CXSPARSE_LIBRARY})
168 # Mark internally as found, then verify. CXSPARSE_REPORT_NOT_FOUND() unsets
170 set(CXSPARSE_FOUND TRUE)
172 # Extract CXSparse version from cs.h
173 if (CXSPARSE_INCLUDE_DIR)
174 set(CXSPARSE_VERSION_FILE ${CXSPARSE_INCLUDE_DIR}/cs.h)
175 if (NOT EXISTS ${CXSPARSE_VERSION_FILE})
176 cxsparse_report_not_found(
177 "Could not find file: ${CXSPARSE_VERSION_FILE} "
178 "containing version information in CXSparse install located at: "
179 "${CXSPARSE_INCLUDE_DIR}.")
180 else (NOT EXISTS ${CXSPARSE_VERSION_FILE})
181 file(READ ${CXSPARSE_INCLUDE_DIR}/cs.h CXSPARSE_VERSION_FILE_CONTENTS)
183 string(REGEX MATCH "#define CS_VER [0-9]+"
184 CXSPARSE_MAIN_VERSION "${CXSPARSE_VERSION_FILE_CONTENTS}")
185 string(REGEX REPLACE "#define CS_VER ([0-9]+)" "\\1"
186 CXSPARSE_MAIN_VERSION "${CXSPARSE_MAIN_VERSION}")
188 string(REGEX MATCH "#define CS_SUBVER [0-9]+"
189 CXSPARSE_SUB_VERSION "${CXSPARSE_VERSION_FILE_CONTENTS}")
190 string(REGEX REPLACE "#define CS_SUBVER ([0-9]+)" "\\1"
191 CXSPARSE_SUB_VERSION "${CXSPARSE_SUB_VERSION}")
193 string(REGEX MATCH "#define CS_SUBSUB [0-9]+"
194 CXSPARSE_SUBSUB_VERSION "${CXSPARSE_VERSION_FILE_CONTENTS}")
195 string(REGEX REPLACE "#define CS_SUBSUB ([0-9]+)" "\\1"
196 CXSPARSE_SUBSUB_VERSION "${CXSPARSE_SUBSUB_VERSION}")
198 # This is on a single line s/t CMake does not interpret it as a list of
199 # elements and insert ';' separators which would result in 3.;1.;2 nonsense.
200 set(CXSPARSE_VERSION "${CXSPARSE_MAIN_VERSION}.${CXSPARSE_SUB_VERSION}.${CXSPARSE_SUBSUB_VERSION}")
201 endif (NOT EXISTS ${CXSPARSE_VERSION_FILE})
202 endif (CXSPARSE_INCLUDE_DIR)
204 # Catch the case when the caller has set CXSPARSE_LIBRARY in the cache / GUI and
205 # thus FIND_LIBRARY was not called, but specified library is invalid, otherwise
206 # we would report CXSparse as found.
207 # TODO: This regex for CXSparse library is pretty primitive, we use lowercase
208 # for comparison to handle Windows using CamelCase library names, could
209 # this check be better?
210 string(TOLOWER "${CXSPARSE_LIBRARY}" LOWERCASE_CXSPARSE_LIBRARY)
211 if (CXSPARSE_LIBRARY AND
212 EXISTS ${CXSPARSE_LIBRARY} AND
213 NOT "${LOWERCASE_CXSPARSE_LIBRARY}" MATCHES ".*cxsparse[^/]*")
214 cxsparse_report_not_found(
215 "Caller defined CXSPARSE_LIBRARY: "
216 "${CXSPARSE_LIBRARY} does not match CXSparse.")
217 endif (CXSPARSE_LIBRARY AND
218 EXISTS ${CXSPARSE_LIBRARY} AND
219 NOT "${LOWERCASE_CXSPARSE_LIBRARY}" MATCHES ".*cxsparse[^/]*")
221 # Set standard CMake FindPackage variables if found.
223 set(CXSPARSE_INCLUDE_DIRS ${CXSPARSE_INCLUDE_DIR})
224 set(CXSPARSE_LIBRARIES ${CXSPARSE_LIBRARY})
225 endif (CXSPARSE_FOUND)
227 cxsparse_reset_find_library_prefix()
229 # Handle REQUIRED / QUIET optional arguments and version.
230 include(FindPackageHandleStandardArgs)
231 find_package_handle_standard_args(CXSparse
232 REQUIRED_VARS CXSPARSE_INCLUDE_DIRS CXSPARSE_LIBRARIES
233 VERSION_VAR CXSPARSE_VERSION)
235 # Only mark internal variables as advanced if we found CXSparse, otherwise
236 # leave them visible in the standard GUI for the user to set manually.
238 mark_as_advanced(FORCE CXSPARSE_INCLUDE_DIR
240 endif (CXSPARSE_FOUND)