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FindGSL.cmake
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# 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, MSVS 8.0
SET
(
GSL_POSSIBLE_ROOT_DIRS
${
GSL_ROOT_DIR
}
$ENV{
GSL_ROOT_DIR
}
${
GSL_DIR
}
${
GSL_HOME
}
$ENV{
GSL_DIR
}
$ENV{
GSL_HOME
}
$ENV{
EXTERN_LIBS_DIR
}
/gsl
$ENV{
EXTRA
}
# "C:/home/jw/source2/gsl-1.8"
)
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
gsl
libgsl
PATHS
${
GSL_POSSIBLE_ROOT_DIRS
}
PATH_SUFFIXES
lib
DOC
"GSL library dir"
)
FIND_LIBRARY
(
GSL_GSLCBLAS_LIBRARY
NAMES
gslcblas
libgslcblas
PATHS
${
GSL_POSSIBLE_ROOT_DIRS
}
PATH_SUFFIXES
lib
DOC
"GSL cblas library dir"
)
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
)
#
# first look in path given by the environment variables (TU Oct-11-2012 )
# HINTS forces find_program to look first in the provided paths
#
find_program
(
GSL_CONFIG
gsl-config
NO_SYSTEM_ENVIRONMENT_PATH
HINTS
$ENV{
GSL_DIR
}
/bin
$ENV{
GSL_HOME
}
/bin
$ENV{
GSLSYS
}
/bin
)
# if this doesn't work out we go to the standard search
# where the system paths are searched first, then the paths
# provided by paths
if
(
GSL_CONFIG-NOTFOUND
)
FIND_PROGRAM
(
GSL_CONFIG
gsl-config
PATHS
/usr/bin/
/usr/local/bin/
/opt/bin/
)
endif
(
GSL_CONFIG-NOTFOUND
)
IF
(
GSL_CONFIG
)
MESSAGE
(
STATUS
"GSL using gsl-config ${GSL_CONFIG}"
)
# set CXXFLAGS to be fed into CXX_FLAGS by the user:
EXEC_PROGRAM
(
${
GSL_CONFIG
}
ARGS
--cflags
OUTPUT_VARIABLE
GSL_CXX_FLAGS
)
#SET(GSL_CXX_FLAGS "`${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`")
# extract link dirs for rpath
EXEC_PROGRAM
(
${
GSL_CONFIG
}
ARGS
--libs
OUTPUT_VARIABLE
GSL_CONFIG_LIBS
)
SET
(
GSL_LIBRARIES
"${GSL_CONFIG_LIBS}"
)
# split off the link dirs (for rpath)
# use regular expression to match wildcard equivalent "-L*"
# with 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 ${GSL_PREFIX}"
)
ELSE
(
GSL_CONFIG
)
INCLUDE
(
UsePkgConfig
)
#needed for PKGCONFIG(...)
MESSAGE
(
STATUS
"GSL using pkgconfig"
)
# PKGCONFIG(gsl includedir libdir linkflags cflags)
PKGCONFIG
(
gsl
GSL_INCLUDE_DIR
GSL_LINK_DIRECTORIES
GSL_LIBRARIES
GSL_CXX_FLAGS
)
IF
(
GSL_INCLUDE_DIR
)
MARK_AS_ADVANCED
(
GSL_CXX_FLAGS
GSL_INCLUDE_DIR
GSL_LIBRARIES
GSL_LINK_DIRECTORIES
)
ELSE
(
GSL_INCLUDE_DIR
)
MESSAGE
(
"FindGSL.cmake: gsl-config/pkg-config gsl not found. Please set it manually. GSL_CONFIG=${GSL_CONFIG}"
)
ENDIF
(
GSL_INCLUDE_DIR
)
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
)
# ==========================================
IF
(
NOT
GSL_FOUND
)
# make FIND_PACKAGE friendly
IF
(
NOT
GSL_FIND_QUIETLY
)
IF
(
GSL_FIND_REQUIRED
)
MESSAGE
(
FATAL_ERROR
"GSL required, please specify it's location."
)
ELSE
(
GSL_FIND_REQUIRED
)
MESSAGE
(
STATUS
"ERROR: GSL was not found."
)
ENDIF
(
GSL_FIND_REQUIRED
)
ENDIF
(
NOT
GSL_FIND_QUIETLY
)
ENDIF
(
NOT
GSL_FOUND
)
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