152 lines
6.1 KiB
CMake
152 lines
6.1 KiB
CMake
# FindEbus.cmake - Find ebus sdk, version >= 4.
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# quchao@seas.upenn.edu (Chao Qu)
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# Modified from FindEigen.cmake by alexs.mac@gmail.com (Alex Stewart)
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#
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# This module defines the following variables:
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#
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# Ebus_FOUND: TRUE if ebus is found.
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# Ebus_INCLUDE_DIRS: Include directories for ebus.
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# Ebus_LIBRARIES: Libraries for all ebus component libraries
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# and dependencies.
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#
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# Ebus_VERSION: Extracted from lib/PvBase.so.x.y.z
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# Ebus_WORLD_VERSION: Equal to 4 if Ebus_VERSION = 4.0.5
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# Ebus_MAJOR_VERSION: Equal to 0 if Ebus_VERSION = 4.0.5
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# Ebus_MINOR_VERSION: Equal to 5 if Ebus_VERSION = 4.0.5
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#
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# The following variables control the behaviour of this module:
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#
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# Ebus_INCLUDE_DIR_HINTS: List of additional directories in which to
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# search for ebus includes, e.g: /foo/include.
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# Ebus_LIBRARY_DIR_HINTS: List of additional directories in which to
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# search for ebus libraries, e.g: /bar/lib.
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#
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# The following variables are also defined by this module, but in line with
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# CMake recommended FindPackage() module style should NOT be referenced directly
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# by callers (use the plural variables detailed above instead). These variables
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# do however affect the behaviour of the module via FIND_[PATH/LIBRARY]() which
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# are NOT re-called (i.e. search for library is not repeated) if these variables
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# are set with valid values _in the CMake cache_. This means that if these
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# variables are set directly in the cache, either by the user in the CMake GUI,
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# or by the user passing -DVAR=VALUE directives to CMake when called (which
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# explicitly defines a cache variable), then they will be used verbatim,
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# bypassing the HINTS variables and other hard-coded search locations.
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#
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# Ebus_INCLUDE_DIR: Include directory for ebus, not including the
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# include directory of any dependencies.
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# Ebus_LIBRARY: ebus library, not including the libraries of any
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# dependencies.
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# Called if we failed to find ebus or any of it's required dependencies,
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# unsets all public (designed to be used externally) variables and reports
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# error message at priority depending upon [REQUIRED/QUIET/<NONE>] argument.
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macro(Ebus_REPORT_NOT_FOUND REASON_MSG)
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unset(Ebus_FOUND)
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unset(Ebus_INCLUDE_DIRS)
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unset(Ebus_LIBRARIES)
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unset(Ebus_WORLD_VERSION)
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unset(Ebus_MAJOR_VERSION)
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unset(Ebus_MINOR_VERSION)
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# Make results of search visible in the CMake GUI if ebus has not
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# been found so that user does not have to toggle to advanced view.
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mark_as_advanced(CLEAR Ebus_INCLUDE_DIR)
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# Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by FindPackage()
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# use the camelcase library name, not uppercase.
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if(Ebus_FIND_QUIETLY)
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message(STATUS "Failed to find ebus - " ${REASON_MSG} ${ARGN})
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elseif(Ebus_FIND_REQUIRED)
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message(FATAL_ERROR "Failed to find ebus - " ${REASON_MSG} ${ARGN})
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else()
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# Neither QUIETLY nor REQUIRED, use no priority which emits a message
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# but continues configuration and allows generation.
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message("-- Failed to find ebus - " ${REASON_MSG} ${ARGN})
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endif()
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endmacro(Ebus_REPORT_NOT_FOUND)
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# Search user-installed locations first, so that we prefer user installs
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# to system installs where both exist.
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list(APPEND Ebus_CHECK_INCLUDE_DIRS
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/opt/pleora/ebus_sdk/Ubuntu-x86_64/include)
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list(APPEND Ebus_CHECK_LIBRARY_DIRS
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/opt/pleora/ebus_sdk/Ubuntu-x86_64/lib)
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# Check general hints
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if(Ebus_HINTS AND EXISTS ${Ebus_HINTS})
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set(Ebus_INCLUDE_DIR_HINTS ${Ebus_HINTS}/include)
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set(Ebus_LIBRARY_DIR_HINTS ${Ebus_HINTS}/lib)
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endif()
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# Search supplied hint directories first if supplied.
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# Find include directory for ebus
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find_path(Ebus_INCLUDE_DIR
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NAMES PvBase.h
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PATHS ${Ebus_INCLUDE_DIR_HINTS}
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${Ebus_CHECK_INCLUDE_DIRS}
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NO_DEFAULT_PATH)
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if(NOT Ebus_INCLUDE_DIR OR NOT EXISTS ${Ebus_INCLUDE_DIR})
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Ebus_REPORT_NOT_FOUND(
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"Could not find ebus include directory, set Ebus_INCLUDE_DIR to "
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"path to ebus include directory,"
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"e.g. /opt/pleora/ebus_sdk/Ubuntu-x86_64/include.")
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else()
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#message(STATUS "ebus include dir found: " ${Ebus_INCLUDE_DIR})
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endif()
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# Find library directory for ebus
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find_library(Ebus_LIBRARY
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NAMES PvBase
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PATHS ${Ebus_LIBRARY_DIR_HINTS}
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${Ebus_CHECK_LIBRARY_DIRS}
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NO_DEFAULT_PATH)
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if(NOT Ebus_LIBRARY OR NOT EXISTS ${Ebus_LIBRARY})
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Ebus_REPORT_NOT_FOUND(
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"Could not find ebus library, set Ebus_LIBRARY "
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"to full path to ebus library direcotory.")
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else()
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# TODO: need to fix this hacky solution for getting Ebus_LIBRARY_DIR
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string(REGEX MATCH ".*/" Ebus_LIBRARY_DIR ${Ebus_LIBRARY})
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endif()
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# Mark internally as found, then verify. Ebus_REPORT_NOT_FOUND() unsets if
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# called.
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set(Ebus_FOUND TRUE)
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# Extract ebus version from ebus_sdk/Ubuntu-12.04-x86_64/lib/libPvBase.so.x.y.z
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if(Ebus_LIBRARY_DIR)
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file(GLOB Ebus_PVBASE
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RELATIVE ${Ebus_LIBRARY_DIR}
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${Ebus_LIBRARY_DIR}/libPvBase.so.[0-9].[0-9].[0-9])
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# TODO: add version support
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# string(REGEX MATCH ""
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# Ebus_WORLD_VERSION ${Ebus_PVBASE})
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# message(STATUS "ebus world version: " ${Ebus_WORLD_VERSION})
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endif()
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# Catch case when caller has set Ebus_INCLUDE_DIR in the cache / GUI and
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# thus FIND_[PATH/LIBRARY] are not called, but specified locations are
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# invalid, otherwise we would report the library as found.
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if(Ebus_INCLUDE_DIR AND NOT EXISTS ${Ebus_INCLUDE_DIR}/PvBase.h)
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Ebus_REPORT_NOT_FOUND("Caller defined Ebus_INCLUDE_DIR: "
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${Ebus_INCLUDE_DIR}
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" does not contain PvBase.h header.")
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endif()
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# Set standard CMake FindPackage variables if found.
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if(Ebus_FOUND)
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set(Ebus_INCLUDE_DIRS ${Ebus_INCLUDE_DIR})
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file(GLOB Ebus_LIBRARIES ${Ebus_LIBRARY_DIR}libPv*.so)
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endif()
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# Handle REQUIRED / QUIET optional arguments.
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include(FindPackageHandleStandardArgs)
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if(Ebus_FOUND)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(Ebus DEFAULT_MSG
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Ebus_INCLUDE_DIRS Ebus_LIBRARIES)
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endif()
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# Only mark internal variables as advanced if we found ebus, otherwise
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# leave it visible in the standard GUI for the user to set manually.
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if(Ebus_FOUND)
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mark_as_advanced(FORCE Ebus_INCLUDE_DIR Ebus_LIBRARY)
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endif()
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