#
# - Find GMP/MPIR libraries and headers
# This module defines the following variables:
#
# GMP_FOUND         - true if GMP/MPIR was found
# GMP_INCLUDE_DIRS  - include search path
# GMP_LIBRARIES      - libraries to link with
# GMP_LIBRARY_DLL    - library DLL to install. Only available on WIN32.
# GMP_LIBRARIES_DIR - the directory the library we link with is found in.


if(MSVC)
   find_library(GMP_LIBRARIES NAMES mpir mpird
                PATHS  
			$ENV{GMP_ROOT}
			$ENV{GMP_ROOT}/lib
			${GMP_ROOT}
			${GMP_ROOT}/lib
			${CMAKE_SOURCE_DIR}/../tools/mpir/lib
			${CMAKE_SOURCE_DIR}/../tools/mpird/lib
			${CMAKE_SOURCE_DIR}/../mpir/lib
			${CMAKE_SOURCE_DIR}/../mpird/lib
			$ENV{PROGRAMFILES}/mpir/lib
			$ENV{PROGRAMFILES}/mpird/lib
			$ENV{HOME}/mpir/lib
			$ENV{HOME}/mpird/lib
			${CMAKE_INSTALL_PREFIX}/lib
			DOC "Try first the MPIR DLL when in an Windows environment"
	  )

		get_filename_component(GMP_LIBRARIES_DIR "${GMP_LIBRARIES}" PATH)

find_file(GMP_LIBRARY_DLL NAMES mpir.dll mpird.dll
        PATHS
			${GMP_LIBRARIES_DIR}/../bin
			${GMP_LIBRARIES_DIR}
)

			find_path(GMP_INCLUDE_DIRS
        NAMES mpir.h mpird.h
        PATHS
			${GMP_LIBRARIES_DIR}/../include
			${GMP_LIBRARIES_DIR}
)

else(MSVC)

#use GMP, notice that there are two cases, everything is the same directory, or everything is in
#its proper places

  find_library(GMP_LIBRARIES NAMES gmp
                PATHS  
			$ENV{GMP_ROOT}
			$ENV{GMP_ROOT}/lib
			${GMP_ROOT}
			${GMP_ROOT}/lib
			/usr/local/opt/gmp/lib
			/opt/lib
			/usr/local/lib
			$ENV{HOME}/lib
			${CMAKE_INSTALL_PREFIX}/lib
  )

get_filename_component(GMP_LIBRARIES_DIR "${GMP_LIBRARIES}" PATH CACHE)

if (WIN32)

find_library(GMP_LIBRARY_DLL NAMES gmp
                PATHS  
			${GMP_LIBRARIES_DIR}/../bin
			${GMP_LIBRARIES_DIR}
 )
endif(WIN32)

find_file(GMP_INCLUDE_DIRS
        NAMES gmp.h
        PATHS
			${GMP_LIBRARIES_DIR}/../include
			${GMP_LIBRARIES_DIR}
			)

endif(MSVC)


# handle the QUIET and REQUIRED arguments and set GMP_FOUND to TRUE if
# all listed variables are true
include(FindPackageHandleStandardArgs)
if(WIN32)
  find_package_handle_standard_args(GMP DEFAULT_MSG GMP_LIBRARIES GMP_LIBRARIES_DIR GMP_LIBRARY_DLL GMP_INCLUDE_DIRS)
mark_as_advanced(GMP_LIBRARY_DLL)
else()
  find_package_handle_standard_args(GMP DEFAULT_MSG GMP_LIBRARIES GMP_LIBRARIES_DIR GMP_INCLUDE_DIRS)
endif()

mark_as_advanced(GMP_LIBRARIES GMP_LIBRARIES_DIR GMP_INCLUDE_DIRS)