newer Find R module
This commit is contained in:
Vítor Santos Costa
parent
aa2fb8f0c5
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44dc6f06d7
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# - This module locates an installed R distribution.
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#
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# Defines the following:
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# R_COMMAND - Path to R command
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# R_HOME - Path to 'R home', as reported by R
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# R_INCLUDE_DIR - Path to R include directory
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# R_LIBRARY_BASE - Path to R library
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# R_LIBRARY_BLAS - Path to Rblas / blas library
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# R_LIBRARY_LAPACK - Path to Rlapack / lapack library
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# R_LIBRARY_READLINE - Path to readline library
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# R_LIBRARIES - Array of: R_LIBRARY_BASE, R_LIBRARY_BLAS, R_LIBRARY_LAPACK, R_LIBRARY_BASE [, R_LIBRARY_READLINE]
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#
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# VTK_R_HOME - (deprecated, use R_HOME instead) Path to 'R home', as reported by R
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#
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# Variable search order:
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# 1. Attempt to locate and set R_COMMAND
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# - If unsuccessful, generate error and prompt user to manually set R_COMMAND
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# 2. Use R_COMMAND to set R_HOME
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# 3. Locate other libraries in the priority:
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# 1. Within a user-built instance of R at R_HOME
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# 2. Within an installed instance of R
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# 3. Within external system libraries
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# R_INCLUDE_DIR - Path to R include directory
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# R_LIBRARIES - Path to R library
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# R_LIBRARY_BASE -
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# R_COMMAND - Path to R command
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# RSCRIPT_EXECUTABLE - Path to Rscript command
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#
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# Make sure find package macros are included
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include( FindPackageHandleStandardArgs )
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set(TEMP_CMAKE_FIND_APPBUNDLE ${CMAKE_FIND_APPBUNDLE})
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set(CMAKE_FIND_APPBUNDLE "NEVER")
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find_program(R_COMMAND R DOC "R executable.")
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if(R_COMMAND)
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execute_process(WORKING_DIRECTORY . COMMAND ${R_COMMAND} RHOME OUTPUT_VARIABLE R_BASE_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
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set(R_HOME ${R_BASE_DIR} CACHE PATH "R home directory obtained from R RHOME")
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mark_as_advanced(R_HOME)
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endif(R_COMMAND)
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find_program(RSCRIPT_EXECUTABLE Rscript DOC "Rscript executable.")
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set(CMAKE_FIND_APPBUNDLE ${TEMP_CMAKE_FIND_APPBUNDLE})
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if(R_COMMAND)
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execute_process(WORKING_DIRECTORY .
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COMMAND ${R_COMMAND} RHOME
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OUTPUT_VARIABLE R_ROOT_DIR
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# deprecated
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if(VTK_R_HOME)
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set(R_HOME ${VTK_R_HOME} CACHE PATH "R home directory obtained from R RHOME")
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else()
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set(R_HOME ${R_ROOT_DIR} CACHE PATH "R home directory obtained from R RHOME")
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set(VTK_R_HOME ${R_HOME})
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endif()
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# /deprecated
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# the following command does nothing currently, but will be used when deprecated code is removed
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set(R_HOME ${R_ROOT_DIR} CACHE PATH "R home directory obtained from R RHOME")
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# R.h gets installed in all sorts of places -
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# ubuntu: /usr/share/R/include, RHEL/Fedora: /usr/include/R/R.h
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find_path(R_INCLUDE_DIR R.h PATHS ${R_INCLUDE_DIR_HINT} /usr/local/lib /usr/local/lib64 /usr/share /usr/include ${R_BASE_DIR} PATH_SUFFIXES include R R/include DOC "Path to file R.h")
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find_library(R_LIBRARY_BASE R PATHS ${R_BASE_DIR} PATH_SUFFIXES /lib DOC "R library (example libR.a, libR.dylib, etc.).")
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find_path(R_INCLUDE_DIR R.h
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HINTS ${R_ROOT_DIR}
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PATHS /usr/local/lib /usr/local/lib64 /usr/share
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PATH_SUFFIXES include R/include
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DOC "Path to file R.h")
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set(R_LIBRARIES ${R_LIBRARY_BASE})
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mark_as_advanced(RSCRIPT_EXECUTABLE R_LIBRARIES R_INCLUDE_DIR R_COMMAND R_LIBRARY_BASE)
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find_library(R_LIBRARY_BASE R
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HINTS ${R_ROOT_DIR}/lib
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DOC "R library (example libR.a, libR.dylib, etc.).")
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find_library(R_LIBRARY_BLAS NAMES Rblas blas
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HINTS ${R_ROOT_DIR}/lib
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DOC "Rblas library (example libRblas.a, libRblas.dylib, etc.).")
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set( _REQUIRED_R_VARIABLES R_INCLUDE_DIR R_COMMAND )
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find_library(R_LIBRARY_LAPACK NAMES Rlapack lapack
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HINTS ${R_ROOT_DIR}/lib
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DOC "Rlapack library (example libRlapack.a, libRlapack.dylib, etc.).")
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find_library(R_LIBRARY_READLINE readline
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HINTS ${R_ROOT_DIR}/lib
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DOC "(Optional) system readline library. Only required if the R libraries were built with readline support.")
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else()
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message(SEND_ERROR "FindR.cmake requires the following variables to be set: R_COMMAND")
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if( APPLE )
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# On linux platform some times the libR.so is not available, however
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# on apple a link error results if the library is linked.
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list( APPEND _REQUIRED_R_VARIABLES R_LIBRARIES R_LIBRARY_BASE )
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endif()
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# Note: R_LIBRARY_BASE is added to R_LIBRARIES twice; this may be due to circular linking dependencies; needs further investigation
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set(R_LIBRARIES ${R_LIBRARY_BASE} ${R_LIBRARY_BLAS} ${R_LIBRARY_LAPACK} ${R_LIBRARY_BASE})
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if(R_LIBRARY_READLINE)
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set(R_LIBRARIES ${R_LIBRARIES} ${R_LIBRARY_READLINE})
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endif()
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find_package_handle_standard_args(R DEFAULT_MSG ${_REQUIRED_R_VARIABLES} )
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