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# Find qhull header and library.
#
# This module defines the following uncached variables:
# QHULL_FOUND, if false, do not try to use qhull.
# QHULL_INCLUDE_DIRS, where to find libqhull/qhull_a.h OR qhull/qhull_a.h.
# HAS_LIBQHULL_INCLUDE
# if true use the libqhull/qhull_a.h form of header,
# if false use the qhull/qhull_a.h form of header.
# QHULL_LIBRARIES, the libraries to link against to use the qhull library
# QHULL_LIBRARY_DIRS, the directory where the qhull library is found.
include(FindPackageHandleStandardArgs)
# Look preferentially for the libqhull form of header directory since
# that is what is supplied by upstream qhull, and if the user is
# finding a local install of the upstream library below, he wants to
# access that same upstream version of the headers to be consistent.
find_file(QHULL_HEADER_FILE NAMES libqhull/qhull_a.h qhull/qhull_a.h)
if(QHULL_HEADER_FILE)
# message(STATUS "QHULL_HEADER_FILE = ${QHULL_HEADER_FILE}")
if(QHULL_HEADER_FILE MATCHES "libqhull")
set(HAS_LIBQHULL_INCLUDE ON)
else(QHULL_HEADER_FILE MATCHES "libqhull")
set(HAS_LIBQHULL_INCLUDE OFF)
endif(QHULL_HEADER_FILE MATCHES "libqhull")
# Determine grandparent directory of header file
get_filename_component(QHULL_INCLUDE_DIRS ${QHULL_HEADER_FILE} DIRECTORY)
get_filename_component(QHULL_INCLUDE_DIRS ${QHULL_INCLUDE_DIRS} DIRECTORY)
elseif(NOT QHULL_HEADER_FILE AND NOT QHULL_FIND_QUIETLY)
message(STATUS "Neither qhull/qhull_a.h header nor libqhull/qhull_a.h could be found")
endif(QHULL_HEADER_FILE)
find_library(QHULL_LIBRARY qhull)
if( QHULL_LIBRARY )
get_filename_component(QHULL_LIBRARY_DIRS ${QHULL_LIBRARY} DIRECTORY)
set(QHULL_LIBRARIES ${QHULL_LIBRARY})
elseif(NOT QHULL_LIBRARY AND NOT QHULL_FIND_QUIETLY)
message(STATUS "qhull library could not be found")
endif(QHULL_LIBRARY)
find_package_handle_standard_args(QHULL
REQUIRED_VARS QHULL_INCLUDE_DIRS QHULL_LIBRARIES QHULL_LIBRARY_DIRS
)
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