cmake support: first cut from David Vaz work.i

cmake/FindR.cmake

@@ -0,0 +1,99 @@
+#                                               -*- cmake -*-
+#
+#  FindR.cmake: Try to find R
+#
+#  (C) Copyright 2005-2012 EDF-EADS-Phimeca
+#
+#  This library is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU Lesser General Public
+#  License as published by the Free Software Foundation; either
+#  version 2.1 of the License.
+#
+#  This library is distributed in the hope that it will be useful
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public
+#  License along with this library; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+#
+#  @author dutka
+#  @date   2010-02-04 16:44:49 +0100 (Thu, 04 Feb 2010)
+#  Id      Makefile.am 1473 2010-02-04 15:44:49Z dutka
+#
+#
+# - Try to find R
+# Once done this will define
+#
+#  R_FOUND - System has R
+#  R_LIBRARIES - The libraries needed to use R
+#  R_DEFINITIONS - Compiler switches required for using R
+#  R_EXECUTABLE - The R interpreter
+
+
+if ( R_EXECUTABLE AND R_LIBRARIES )
+   # in cache already
+   set( R_FIND_QUIETLY TRUE )
+endif ( R_EXECUTABLE AND R_LIBRARIES )
+
+#IF (NOT WIN32)
+#   # use pkg-config to get the directories and then use these values
+#   # in the FIND_PATH() and FIND_LIBRARY() calls
+#   FIND_PACKAGE(PkgConfig)
+#   PKG_CHECK_MODULES(PC_R R)
+#   SET(R_DEFINITIONS ${PC_R_CFLAGS_OTHER})
+#ENDIF (NOT WIN32)
+
+find_program ( R_EXECUTABLE
+               NAMES R R.exe
+               DOC "Path to the R command interpreter"
+              )
+
+get_filename_component ( _R_EXE_PATH ${R_EXECUTABLE} PATH )
+
+if ( R_EXECUTABLE )
+  execute_process ( COMMAND ${R_EXECUTABLE} RHOME
+                    OUTPUT_VARIABLE _R_HOME 
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                  )
+endif ( R_EXECUTABLE )
+
+find_library ( R_LIBRARIES
+  NAMES R
+  HINTS
+  ${PC_R_LIBDIR}
+  ${PC_R_LIBRARY_DIRS}
+  ${_R_HOME}/lib
+  ${_R_HOME}/lib/x86_64
+)
+
+set ( R_PACKAGES )
+if ( R_EXECUTABLE )
+  foreach ( _component ${R_FIND_COMPONENTS} )
+    if ( NOT R_${_component}_FOUND )
+    execute_process ( COMMAND echo "library(${_component})"
+                      COMMAND ${R_EXECUTABLE} --no-save --silent --no-readline --slave
+                      RESULT_VARIABLE _res
+                      OUTPUT_VARIABLE _trashout
+                      ERROR_VARIABLE  _trasherr
+                    )
+    if ( NOT _res )
+      message ( STATUS "Looking for R package ${_component} - found" )
+      set ( R_${_component}_FOUND 1 CACHE INTERNAL "True if R package ${_component} is here" )
+    else ( NOT _res )
+      message ( STATUS "Looking for R package ${_component} - not found" )
+      set ( R_${_component}_FOUND 0 CACHE INTERNAL "True if R package ${_component} is here" )
+    endif ( NOT _res )
+    list ( APPEND R_PACKAGES R_${_component}_FOUND )
+    endif ( NOT R_${_component}_FOUND )
+  endforeach ( _component )
+endif ( R_EXECUTABLE )
+
+include ( FindPackageHandleStandardArgs )
+
+# handle the QUIETLY and REQUIRED arguments and set R_FOUND to TRUE if 
+# all listed variables are TRUE
+find_package_handle_standard_args ( R DEFAULT_MSG R_EXECUTABLE R_LIBRARIES ${R_PACKAGES} )
+
+mark_as_advanced ( R_EXECUTABLE R_LIBRARIES ${R_PACKAGES} )