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rCADDMESH/cmake/FindGSL.cmake
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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
#
# Based on a script of Felix Woelk and Jan Woetzel
# (www.mip.informatik.uni-kiel.de)
#
# It defines the following variables:
# GSL_FOUND - system has GSL lib
# GSL_INCLUDE_DIRS - where to find headers
# GSL_LIBRARIES - full path to the libraries
# GSL_LIBRARY_DIRS, the directory where the PLplot library is found.
# CMAKE_GSL_CXX_FLAGS = Unix compiler flags for GSL, essentially "`gsl-config --cxxflags`"
# GSL_LINK_DIRECTORIES = link directories, useful for rpath on Unix
# GSL_EXE_LINKER_FLAGS = rpath on Unix
set( GSL_FOUND OFF )
set( GSL_CBLAS_FOUND OFF )
# Windows, but not for Cygwin and MSys where gsl-config is available
if( WIN32 AND NOT CYGWIN AND NOT MSYS )
# look for headers
find_path( GSL_INCLUDE_DIR
NAMES gsl/gsl_cdf.h gsl/gsl_randist.h
)
if( GSL_INCLUDE_DIR )
# look for gsl library
find_library( GSL_LIBRARY
NAMES gsl
)
if( GSL_LIBRARY )
set( GSL_INCLUDE_DIRS ${GSL_INCLUDE_DIR} )
get_filename_component( GSL_LIBRARY_DIRS ${GSL_LIBRARY} PATH )
set( GSL_FOUND ON )
endif( GSL_LIBRARY )
# look for gsl cblas library
find_library( GSL_CBLAS_LIBRARY
NAMES gslcblas
)
if( GSL_CBLAS_LIBRARY )
set( GSL_CBLAS_FOUND ON )
endif( GSL_CBLAS_LIBRARY )
set( GSL_LIBRARIES ${GSL_LIBRARY} ${GSL_CBLAS_LIBRARY} )
endif( GSL_INCLUDE_DIR )
mark_as_advanced(
GSL_INCLUDE_DIR
GSL_LIBRARY
GSL_CBLAS_LIBRARY
)
else( WIN32 AND NOT CYGWIN AND NOT MSYS )
if( UNIX OR MSYS )
find_program( GSL_CONFIG_EXECUTABLE gsl-config
/usr/bin/
/usr/local/bin
)
if( GSL_CONFIG_EXECUTABLE )
set( GSL_FOUND ON )
# run the gsl-config program to get cxxflags
execute_process(
COMMAND sh "${GSL_CONFIG_EXECUTABLE}" --cflags
OUTPUT_VARIABLE GSL_CFLAGS
RESULT_VARIABLE RET
ERROR_QUIET
)
if( RET EQUAL 0 )
string( STRIP "${GSL_CFLAGS}" GSL_CFLAGS )
separate_arguments( GSL_CFLAGS )
# parse definitions from cflags; drop -D* from CFLAGS
string( REGEX MATCHALL "-D[^;]+"
GSL_DEFINITIONS "${GSL_CFLAGS}" )
string( REGEX REPLACE "-D[^;]+;" ""
GSL_CFLAGS "${GSL_CFLAGS}" )
# parse include dirs from cflags; drop -I prefix
string( REGEX MATCHALL "-I[^;]+"
GSL_INCLUDE_DIRS "${GSL_CFLAGS}" )
string( REPLACE "-I" ""
GSL_INCLUDE_DIRS "${GSL_INCLUDE_DIRS}")
string( REGEX REPLACE "-I[^;]+;" ""
GSL_CFLAGS "${GSL_CFLAGS}")
#message("GSL_DEFINITIONS=${GSL_DEFINITIONS}")
#message("GSL_INCLUDE_DIRS=${GSL_INCLUDE_DIRS}")
#message("GSL_CFLAGS=${GSL_CFLAGS}")
else( RET EQUAL 0 )
set( GSL_FOUND FALSE )
endif( RET EQUAL 0 )
# run the gsl-config program to get the libs
execute_process(
COMMAND sh "${GSL_CONFIG_EXECUTABLE}" --libs
OUTPUT_VARIABLE GSL_LIBRARIES
RESULT_VARIABLE RET
ERROR_QUIET
)
if( RET EQUAL 0 )
string(STRIP "${GSL_LIBRARIES}" GSL_LIBRARIES )
separate_arguments( GSL_LIBRARIES )
# extract linkdirs (-L) for rpath (i.e., LINK_DIRECTORIES)
string( REGEX MATCHALL "-L[^;]+"
GSL_LIBRARY_DIRS "${GSL_LIBRARIES}" )
string( REPLACE "-L" ""
GSL_LIBRARY_DIRS "${GSL_LIBRARY_DIRS}" )
else( RET EQUAL 0 )
set( GSL_FOUND FALSE )
endif( RET EQUAL 0 )
MARK_AS_ADVANCED(
GSL_CFLAGS
)
message( STATUS "Using GSL from ${GSL_PREFIX}" )
else( GSL_CONFIG_EXECUTABLE )
message( STATUS "FindGSL: gsl-config not found.")
endif( GSL_CONFIG_EXECUTABLE )
endif( UNIX OR MSYS )
endif( WIN32 AND NOT CYGWIN AND NOT MSYS )
if( GSL_FOUND )
if( NOT GSL_FIND_QUIETLY )
message( STATUS "FindGSL: Found both GSL headers and library" )
endif( NOT GSL_FIND_QUIETLY )
else( GSL_FOUND )
if( GSL_FIND_REQUIRED )
message( FATAL_ERROR "FindGSL: Could not find GSL headers or library" )
endif( GSL_FIND_REQUIRED )
endif( GSL_FOUND )
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