Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/cmake/FindGSL.cmake b/cmake/FindGSL.cmake
new file mode 100644
index 0000000..bf411a7
--- /dev/null
+++ b/cmake/FindGSL.cmake
@@ -0,0 +1,170 @@
+# Try to find gnu scientific library GSL
+# See
+# http://www.gnu.org/software/gsl/ and
+# http://gnuwin32.sourceforge.net/packages/gsl.htm
+#
+# Once run this will define:
+#
+# GSL_FOUND = system has GSL lib
+#
+# GSL_LIBRARIES = full path to the libraries
+# on Unix/Linux with additional linker flags from "gsl-config --libs"
+#
+# CMAKE_GSL_CXX_FLAGS = Unix compiler flags for GSL, essentially "`gsl-config --cxxflags`"
+#
+# GSL_INCLUDE_DIR = where to find headers
+#
+# GSL_LINK_DIRECTORIES = link directories, useful for rpath on Unix
+# GSL_EXE_LINKER_FLAGS = rpath on Unix
+#
+# Felix Woelk 07/2004
+# Jan Woetzel
+#
+# www.mip.informatik.uni-kiel.de
+# --------------------------------
+
+IF(WIN32)
+ # JW tested with gsl-1.8, Windows XP, MSVS 7.1
+ SET(GSL_POSSIBLE_ROOT_DIRS
+ ${GSL_ROOT_DIR}
+ $ENV{GSL_ROOT_DIR}
+ ${GSL_DIR}
+ ${GSL_HOME}
+ $ENV{GSL_DIR}
+ $ENV{GSL_HOME}
+ $ENV{EXTRA}
+ "C:/Program Files/GnuWin32"
+ )
+ FIND_PATH(GSL_INCLUDE_DIR
+ NAMES gsl/gsl_cdf.h gsl/gsl_randist.h
+ PATHS ${GSL_POSSIBLE_ROOT_DIRS}
+ PATH_SUFFIXES include
+ DOC "GSL header include dir"
+ )
+
+ FIND_LIBRARY(GSL_GSL_LIBRARY
+ NAMES libgsl.dll.a gsl libgsl
+ PATHS ${GSL_POSSIBLE_ROOT_DIRS}
+ PATH_SUFFIXES lib
+ DOC "GSL library" )
+
+ if(NOT GSL_GSL_LIBRARY)
+ FIND_FILE(GSL_GSL_LIBRARY
+ NAMES libgsl.dll.a
+ PATHS ${GSL_POSSIBLE_ROOT_DIRS}
+ PATH_SUFFIXES lib
+ DOC "GSL library")
+ endif(NOT GSL_GSL_LIBRARY)
+
+ FIND_LIBRARY(GSL_GSLCBLAS_LIBRARY
+ NAMES libgslcblas.dll.a gslcblas libgslcblas
+ PATHS ${GSL_POSSIBLE_ROOT_DIRS}
+ PATH_SUFFIXES lib
+ DOC "GSL cblas library dir" )
+
+ if(NOT GSL_GSLCBLAS_LIBRARY)
+ FIND_FILE(GSL_GSLCBLAS_LIBRARY
+ NAMES libgslcblas.dll.a
+ PATHS ${GSL_POSSIBLE_ROOT_DIRS}
+ PATH_SUFFIXES lib
+ DOC "GSL library")
+ endif(NOT GSL_GSLCBLAS_LIBRARY)
+
+ SET(GSL_LIBRARIES ${GSL_GSL_LIBRARY})
+
+ #MESSAGE("DBG\n"
+ # "GSL_GSL_LIBRARY=${GSL_GSL_LIBRARY}\n"
+ # "GSL_GSLCBLAS_LIBRARY=${GSL_GSLCBLAS_LIBRARY}\n"
+ # "GSL_LIBRARIES=${GSL_LIBRARIES}")
+
+
+ELSE(WIN32)
+
+ IF(UNIX)
+ SET(GSL_CONFIG_PREFER_PATH
+ "$ENV{GSL_DIR}/bin"
+ "$ENV{GSL_DIR}"
+ "$ENV{GSL_HOME}/bin"
+ "$ENV{GSL_HOME}"
+ CACHE STRING "preferred path to GSL (gsl-config)")
+ FIND_PROGRAM(GSL_CONFIG gsl-config
+ ${GSL_CONFIG_PREFER_PATH}
+ /usr/bin/
+ )
+ # MESSAGE("DBG GSL_CONFIG ${GSL_CONFIG}")
+
+ IF (GSL_CONFIG)
+ # set CXXFLAGS to be fed into CXX_FLAGS by the user:
+ SET(GSL_CXX_FLAGS "`${GSL_CONFIG} --cflags`")
+
+ # set INCLUDE_DIRS to prefix+include
+ EXEC_PROGRAM(${GSL_CONFIG}
+ ARGS --prefix
+ OUTPUT_VARIABLE GSL_PREFIX)
+ SET(GSL_INCLUDE_DIR ${GSL_PREFIX}/include CACHE STRING INTERNAL)
+
+ # set link libraries and link flags
+ #SET(GSL_LIBRARIES "`${GSL_CONFIG} --libs`")
+ EXEC_PROGRAM(${GSL_CONFIG}
+ ARGS --libs
+ OUTPUT_VARIABLE GSL_LIBRARIES )
+
+ # extract link dirs for rpath
+ EXEC_PROGRAM(${GSL_CONFIG}
+ ARGS --libs
+ OUTPUT_VARIABLE GSL_CONFIG_LIBS )
+
+ # extract version
+ EXEC_PROGRAM(${GSL_CONFIG}
+ ARGS --version
+ OUTPUT_VARIABLE GSL_FULL_VERSION )
+
+ # split version as major/minor
+ STRING(REGEX MATCH "(.)\\..*" GSL_VERSION_MAJOR_ "${GSL_FULL_VERSION}")
+ SET(GSL_VERSION_MAJOR ${CMAKE_MATCH_1})
+ STRING(REGEX MATCH ".\\.(.*)" GSL_VERSION_MINOR_ "${GSL_FULL_VERSION}")
+ SET(GSL_VERSION_MINOR ${CMAKE_MATCH_1})
+
+ # split off the link dirs (for rpath)
+ # use regular expression to match wildcard equivalent "-L*<endchar>"
+ # with <endchar> is a space or a semicolon
+ STRING(REGEX MATCHALL "[-][L]([^ ;])+"
+ GSL_LINK_DIRECTORIES_WITH_PREFIX
+ "${GSL_CONFIG_LIBS}" )
+ # MESSAGE("DBG GSL_LINK_DIRECTORIES_WITH_PREFIX=${GSL_LINK_DIRECTORIES_WITH_PREFIX}")
+
+ # remove prefix -L because we need the pure directory for LINK_DIRECTORIES
+
+ IF (GSL_LINK_DIRECTORIES_WITH_PREFIX)
+ STRING(REGEX REPLACE "[-][L]" "" GSL_LINK_DIRECTORIES ${GSL_LINK_DIRECTORIES_WITH_PREFIX} )
+ ENDIF (GSL_LINK_DIRECTORIES_WITH_PREFIX)
+ SET(GSL_EXE_LINKER_FLAGS "-Wl,-rpath,${GSL_LINK_DIRECTORIES}" CACHE STRING INTERNAL)
+ # MESSAGE("DBG GSL_LINK_DIRECTORIES=${GSL_LINK_DIRECTORIES}")
+ # MESSAGE("DBG GSL_EXE_LINKER_FLAGS=${GSL_EXE_LINKER_FLAGS}")
+
+ # ADD_DEFINITIONS("-DHAVE_GSL")
+ # SET(GSL_DEFINITIONS "-DHAVE_GSL")
+ MARK_AS_ADVANCED(
+ GSL_CXX_FLAGS
+ GSL_INCLUDE_DIR
+ GSL_LIBRARIES
+ GSL_LINK_DIRECTORIES
+ GSL_DEFINITIONS
+ )
+ MESSAGE(STATUS "Using GSL from ${GSL_PREFIX}")
+
+ ELSE(GSL_CONFIG)
+ MESSAGE("FindGSL.cmake: gsl-config not found. Please set it manually. GSL_CONFIG=${GSL_CONFIG}")
+ ENDIF(GSL_CONFIG)
+
+ ENDIF(UNIX)
+ENDIF(WIN32)
+
+
+IF(GSL_LIBRARIES)
+ IF(GSL_INCLUDE_DIR OR GSL_CXX_FLAGS)
+
+ SET(GSL_FOUND 1)
+
+ ENDIF(GSL_INCLUDE_DIR OR GSL_CXX_FLAGS)
+ENDIF(GSL_LIBRARIES)