cgal/CMake/cmake/modules/FindBoost2.cmake

130 lines
5.2 KiB
CMake

#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# This is FindBoost2, a fork of FindBoost which works also with the default directory structure on windows.
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# - Find the Boost includes and libraries.
# The following variables are set if Boost is found. If Boost is not
# found, Boost_FOUND is set to false.
# Boost_FOUND - True when the Boost include directory is found.
# Boost_INCLUDE_DIRS - the path to where the boost include files are.
# Boost_LIBRARY_DIRS - The path to where the boost library files are.
# Boost_LIB_DIAGNOSTIC_DEFINITIONS - Only set if using Windows.
# ----------------------------------------------------------------------------
# If you have installed Boost in a non-standard location or you have
# just staged the boost files using bjam then you have three
# options. In the following comments, it is assumed that <Your Path>
# points to the root directory of the include directory of Boost. e.g
# If you have put boost in C:\development\Boost then <Your Path> is
# "C:/development/Boost" and in this directory there will be two
# directories called "include" and "lib".
# 1) After CMake runs, set Boost_INCLUDE_DIR to <Your Path>/include/boost<-version>
# 2) Use CMAKE_INCLUDE_PATH to set a path to <Your Path>/include. This will allow FIND_PATH()
# to locate Boost_INCLUDE_DIR by utilizing the PATH_SUFFIXES option. e.g.
# SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "<Your Path>/include")
# 3) Set an environment variable called ${BOOSTROOT} that points to the root of where you have
# installed Boost, e.g. <Your Path>. It is assumed that there is at least a subdirectory called
# include in this path.
#
# Note:
# 1) If you are just using the boost headers, then you do not need to use
# Boost_LIBRARY_DIRS in your CMakeLists.txt file.
# 2) If Boost has not been installed, then when setting Boost_LIBRARY_DIRS
# the script will look for /lib first and, if this fails, then for /stage/lib.
#
# Usage:
# In your CMakeLists.txt file do something like this:
# ...
# # Boost
# FIND_PACKAGE(Boost)
# ...
# INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
# LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
#
# In Windows, we make the assumption that, if the Boost files are installed, the default directory
# will be C:\boost.
#
# TODO:
#
# 1) Automatically find the Boost library files and eliminate the need
# to use Link Directories.
#
SET(BOOST_INCLUDE_PATH_DESCRIPTION "directory containing the boost include files. E.g /usr/local/include/boost_1_34_1 or c:\\Program Files\\boost\\boost_1_34_1")
SET(BOOST_DIR_MESSAGE "Set the Boost_INCLUDE_DIR cmake cache entry to the directory containing the boost include files.")
SET(BOOST_DIR_SEARCH $ENV{BOOST_ROOT})
if ( NOT BOOST_DIR_SEARCH )
SET(BOOST_DIR_SEARCH $ENV{BOOSTROOT} )
endif()
IF(BOOST_DIR_SEARCH)
FILE(TO_CMAKE_PATH ${BOOST_DIR_SEARCH} BOOST_DIR_SEARCH)
# In Windows, BOOST_ROOT refers directory to the folder having boost/<headers>.hpp
# but on Linux, BOOST_ROOT typically refers to a folder having incude/boost/<headers>.hpp
SET(BOOST_DIR_SEARCH ${BOOST_DIR_SEARCH} {BOOST_DIR_SEARCH}/include)
ENDIF()
# The windows installer uses C:\\Program Files\\boost\\boost_XX_YY_ZZ by default
IF(WIN32)
SET(BOOST_DIR_SEARCH
${BOOST_DIR_SEARCH}
"C:/Program Files/boost/boost_1_35_1"
"C:/Program Files/boost/boost_1_35_0"
"C:/Program Files/boost/boost_1_34_1"
"C:/Program Files/boost/boost_1_34_0"
"C:/Program Files/boost/boost_1_33_1"
"C:/Program Files/boost/boost_1_33_0"
)
ENDIF()
#
# Look for an installation.
#
FIND_PATH(Boost_INCLUDE_DIR NAMES boost/config.hpp PATHS ${BOOST_DIR_SEARCH} DOC "The ${BOOST_INCLUDE_PATH_DESCRIPTION}" )
# Now try to get the include and library path.
IF(Boost_INCLUDE_DIR)
SET(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
# Compose the boost library path.
# Note that the user may not have installed any libraries
# so it is quite possible the Boost_LIBRARY_PATH may not exist.
SET(Boost_LIBRARY_DIR ${Boost_INCLUDE_DIR})
# !! ON WHAT PLATFORM CAN THIS WORK !!
#IF("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
# GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
#ENDIF ("${Boost_LIBRARY_DIR}" MATCHES "boost-[0-9]+")
# Strip off the trailing "/include" in the path.
IF("${Boost_LIBRARY_DIR}" MATCHES "/include$")
GET_FILENAME_COMPONENT(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR} PATH)
ENDIF()
IF(EXISTS "${Boost_LIBRARY_DIR}/lib")
SET (Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/lib)
ELSE()
IF(EXISTS "${Boost_LIBRARY_DIR}/stage/lib")
SET(Boost_LIBRARY_DIR ${Boost_LIBRARY_DIR}/stage/lib)
ELSE()
SET(Boost_LIBRARY_DIR "")
ENDIF()
ENDIF()
IF(Boost_LIBRARY_DIR AND EXISTS "${Boost_LIBRARY_DIR}")
SET(Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR})
ENDIF()
ENDIF()
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Boost "Boost was not found. ${BOOST_DIR_MESSAGE}" Boost_INCLUDE_DIRS )
SET(Boost_FOUND ${BOOST_FOUND})
MARK_AS_ADVANCED(Boost_INCLUDE_DIR)
MARK_AS_ADVANCED(Boost_LIBRARY_DIR)