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Diffstat (limited to 'Help/command/find_library.rst')
| -rw-r--r-- | Help/command/find_library.rst | 161 |
1 files changed, 17 insertions, 144 deletions
diff --git a/Help/command/find_library.rst b/Help/command/find_library.rst index 39ec4af..8598be7 100644 --- a/Help/command/find_library.rst +++ b/Help/command/find_library.rst @@ -1,157 +1,30 @@ find_library ------------ -Find a library. - -:: - - find_library(<VAR> name1 [path1 path2 ...]) - -This is the short-hand signature for the command that is sufficient in -many cases. It is the same as find_library(<VAR> name1 [PATHS path1 -path2 ...]) - -:: - - find_library( - <VAR> - name | NAMES name1 [name2 ...] [NAMES_PER_DIR] - [HINTS path1 [path2 ... ENV var]] - [PATHS path1 [path2 ... ENV var]] - [PATH_SUFFIXES suffix1 [suffix2 ...]] - [DOC "cache documentation string"] - [NO_DEFAULT_PATH] - [NO_CMAKE_ENVIRONMENT_PATH] - [NO_CMAKE_PATH] - [NO_SYSTEM_ENVIRONMENT_PATH] - [NO_CMAKE_SYSTEM_PATH] - [CMAKE_FIND_ROOT_PATH_BOTH | - ONLY_CMAKE_FIND_ROOT_PATH | - NO_CMAKE_FIND_ROOT_PATH] - ) - -This command is used to find a library. A cache entry named by <VAR> -is created to store the result of this command. If the library is -found the result is stored in the variable and the search will not be -repeated unless the variable is cleared. If nothing is found, the -result will be <VAR>-NOTFOUND, and the search will be attempted again -the next time find_library is invoked with the same variable. The -name of the library that is searched for is specified by the names -listed after the NAMES argument. Additional search locations can be -specified after the PATHS argument. If ENV var is found in the HINTS -or PATHS section the environment variable var will be read and -converted from a system environment variable to a cmake style list of -paths. For example ENV PATH would be a way to list the system path -variable. The argument after DOC will be used for the documentation -string in the cache. PATH_SUFFIXES specifies additional -subdirectories to check below each search path. - -If NO_DEFAULT_PATH is specified, then no additional paths are added to -the search. If NO_DEFAULT_PATH is not specified, the search process -is as follows: - -1. Search paths specified in cmake-specific cache variables. These -are intended to be used on the command line with a -DVAR=value. This -can be skipped if NO_CMAKE_PATH is passed. - -:: +.. |FIND_XXX| replace:: find_library +.. |NAMES| replace:: NAMES name1 [name2 ...] [NAMES_PER_DIR] +.. |SEARCH_XXX| replace:: library +.. |SEARCH_XXX_DESC| replace:: library +.. |XXX_SUBDIR| replace:: lib +.. |CMAKE_PREFIX_PATH_XXX| replace:: <prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and - <prefix>/lib for each <prefix> in CMAKE_PREFIX_PATH - CMAKE_LIBRARY_PATH - CMAKE_FRAMEWORK_PATH - -2. Search paths specified in cmake-specific environment variables. -These are intended to be set in the user's shell configuration. This -can be skipped if NO_CMAKE_ENVIRONMENT_PATH is passed. - -:: - - <prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and - <prefix>/lib for each <prefix> in CMAKE_PREFIX_PATH - CMAKE_LIBRARY_PATH - CMAKE_FRAMEWORK_PATH - -3. Search the paths specified by the HINTS option. These should be -paths computed by system introspection, such as a hint provided by the -location of another item already found. Hard-coded guesses should be -specified with the PATHS option. + |CMAKE_PREFIX_PATH_XXX_SUBDIR| +.. |CMAKE_XXX_PATH| replace:: CMAKE_LIBRARY_PATH +.. |CMAKE_XXX_MAC_PATH| replace:: CMAKE_FRAMEWORK_PATH -4. Search the standard system environment variables. This can be -skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument. - -:: - - PATH - LIB - -5. Search cmake variables defined in the Platform files for the -current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is -passed. - -:: +.. |SYSTEM_ENVIRONMENT_PATH_XXX| replace:: PATH and LIB +.. |CMAKE_SYSTEM_PREFIX_PATH_XXX| replace:: <prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and - <prefix>/lib for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH - CMAKE_SYSTEM_LIBRARY_PATH - CMAKE_SYSTEM_FRAMEWORK_PATH - -6. Search the paths specified by the PATHS option or in the -short-hand version of the command. These are typically hard-coded -guesses. - -On Darwin or systems supporting OS X Frameworks, the cmake variable -CMAKE_FIND_FRAMEWORK can be set to empty or one of the following: - -:: - - "FIRST" - Try to find frameworks before standard - libraries or headers. This is the default on Darwin. - "LAST" - Try to find frameworks after standard - libraries or headers. - "ONLY" - Only try to find frameworks. - "NEVER" - Never try to find frameworks. - -On Darwin or systems supporting OS X Application Bundles, the cmake -variable CMAKE_FIND_APPBUNDLE can be set to empty or one of the -following: - -:: - - "FIRST" - Try to find application bundles before standard - programs. This is the default on Darwin. - "LAST" - Try to find application bundles after standard - programs. - "ONLY" - Only try to find application bundles. - "NEVER" - Never try to find application bundles. - -The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more -directories to be prepended to all other search directories. This -effectively "re-roots" the entire search under given locations. By -default it is empty. It is especially useful when cross-compiling to -point to the root directory of the target environment and CMake will -search there too. By default at first the directories listed in -CMAKE_FIND_ROOT_PATH and then the non-rooted directories will be -searched. The default behavior can be adjusted by setting -CMAKE_FIND_ROOT_PATH_MODE_LIBRARY. This behavior can be manually -overridden on a per-call basis. By using CMAKE_FIND_ROOT_PATH_BOTH -the search order will be as described above. If -NO_CMAKE_FIND_ROOT_PATH is used then CMAKE_FIND_ROOT_PATH will not be -used. If ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted -directories will be searched. - -The default search order is designed to be most-specific to -least-specific for common use cases. Projects may override the order -by simply calling the command multiple times and using the NO_* -options: - -:: + |CMAKE_SYSTEM_PREFIX_PATH_XXX_SUBDIR| +.. |CMAKE_SYSTEM_XXX_PATH| replace:: CMAKE_SYSTEM_LIBRARY_PATH +.. |CMAKE_SYSTEM_XXX_MAC_PATH| replace:: CMAKE_SYSTEM_FRAMEWORK_PATH - find_library(<VAR> NAMES name PATHS paths... NO_DEFAULT_PATH) - find_library(<VAR> NAMES name) +.. |CMAKE_FIND_ROOT_PATH_MODE_XXX| replace:: + CMAKE_FIND_ROOT_PATH_MODE_LIBRARY -Once one of the calls succeeds the result variable will be set and -stored in the cache so that no call will search again. +.. include:: FIND_XXX.txt When more than one value is given to the NAMES option this command by default will consider one name at a time and search every directory |