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# - Try to find GSL
# Once done this will define
#
# GSL_FOUND - system has GSL
# GSL_INCLUDE_DIRS - the GSL include directory
# GSL_LIBRARIES - Link these to use GSL
# GSL_DEFINITIONS - Compiler switches required for using GSL
#
# Copyright (c) 2008 Joshua L. Blocher <verbalshadow@gmail.com>
#
# Redistribution and use is allowed according to the terms of the New
# BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#
if (GSL_LIBRARIES AND GSL_INCLUDE_DIRS)
# in cache already
set(GSL_FOUND TRUE)
else (GSL_LIBRARIES AND GSL_INCLUDE_DIRS)
# use pkg-config to get the directories and then use these values
# in the FIND_PATH() and FIND_LIBRARY() calls
if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
include(UsePkgConfig)
pkgconfig(gsl _GSL_INCLUDEDIR _GSL_LIBDIR _GSL_LDFLAGS _GSL_CFLAGS)
else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(_GSL gsl)
endif (PKG_CONFIG_FOUND)
endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
find_path(GSL_INCLUDE_DIR
NAMES
gsl_blas.h
PATHS
${_GSL_INCLUDEDIR}
/usr/include
/usr/local/include
/opt/local/include
/sw/include
PATH_SUFFIXES
gsl
)
find_library(GSL_LIBRARY
NAMES
gsl
PATHS
${_GSL_LIBDIR}
/usr/lib
/usr/local/lib
/opt/local/lib
/sw/lib
)
if (GSL_LIBRARY)
set(GSL_FOUND TRUE)
endif (GSL_LIBRARY)
set(GSL_INCLUDE_DIRS
${GSL_INCLUDE_DIR}
)
if (GSL_FOUND)
set(GSL_LIBRARIES
${GSL_LIBRARIES}
${GSL_LIBRARY}
)
endif (GSL_FOUND)
if (GSL_INCLUDE_DIRS AND GSL_LIBRARIES)
set(GSL_FOUND TRUE)
endif (GSL_INCLUDE_DIRS AND GSL_LIBRARIES)
if (GSL_FOUND)
if (NOT GSL_FIND_QUIETLY)
message(STATUS "Found GSL: ${GSL_LIBRARIES}")
endif (NOT GSL_FIND_QUIETLY)
else (GSL_FOUND)
if (GSL_FIND_REQUIRED)
message(FATAL_ERROR "Could not find GSL")
endif (GSL_FIND_REQUIRED)
endif (GSL_FOUND)
# show the GSL_INCLUDE_DIRS and GSL_LIBRARIES variables only in the advanced view
mark_as_advanced(GSL_INCLUDE_DIRS GSL_LIBRARIES)
endif (GSL_LIBRARIES AND GSL_INCLUDE_DIRS)
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