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# Try to find the bdwgc libraries
# See https://github.com/ivmai/bdwgc
#
# This file sets up gc for CMake. Once done this will define
# BDWGC_FOUND - system has BDWGC lib
# BDWGC_INCLUDE_DIR - the BDWGC include directory
# BDWGC_LIBRARIES - Libraries needed to use BDWGC
#
# Copyright (c) 2020, Mahrud Sayrafi, <mahrud@umn.edu>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# Set BDWGC_FIND_VERSION to 1.0.0 if no minimum version is specified
if(NOT BDWGC_FIND_VERSION)
if(NOT BDWGC_FIND_VERSION_MAJOR)
set(BDWGC_FIND_VERSION_MAJOR 1)
endif()
if(NOT BDWGC_FIND_VERSION_MINOR)
set(BDWGC_FIND_VERSION_MINOR 0)
endif()
if(NOT BDWGC_FIND_VERSION_MICRO)
set(BDWGC_FIND_VERSION_MICRO 0)
endif()
set(BDWGC_FIND_VERSION "${BDWGC_FIND_VERSION_MAJOR}.${BDWGC_FIND_VERSION_MINOR}.${BDWGC_FIND_VERSION_MICRO}")
endif()
macro(_gc_check_version)
# Query BDWGC_VERSION
file(READ "${BDWGC_INCLUDE_DIR}/gc/gc_version.h" _gc_version_header)
string(REGEX MATCH "define[ \t]+GC_TMP_VERSION_MAJOR[ \t]+([0-9]+)"
_gc_major_version_match "${_gc_version_header}")
set(BDWGC_MAJOR_VERSION "${CMAKE_MATCH_1}")
string(REGEX MATCH "define[ \t]+GC_TMP_VERSION_MINOR[ \t]+([0-9]+)"
_gc_minor_version_match "${_gc_version_header}")
set(BDWGC_MINOR_VERSION "${CMAKE_MATCH_1}")
string(REGEX MATCH "define[ \t]+GC_TMP_VERSION_MICRO[ \t]+([0-9]+)"
_gc_micro_version_match "${_gc_version_header}")
set(BDWGC_MICRO_VERSION "${CMAKE_MATCH_1}")
set(BDWGC_VERSION
${BDWGC_MAJOR_VERSION}.${BDWGC_MINOR_VERSION}.${BDWGC_MICRO_VERSION})
# Check whether found version exceeds minimum required
if(${BDWGC_VERSION} VERSION_LESS ${BDWGC_FIND_VERSION})
set(BDWGC_VERSION_OK FALSE)
message(STATUS "BDWGC version ${BDWGC_VERSION} found in ${BDWGC_INCLUDE_DIR}, "
"but at least version ${BDWGC_FIND_VERSION} is required")
else()
set(BDWGC_VERSION_OK TRUE)
endif()
endmacro(_gc_check_version)
if(NOT BDWGC_VERSION_OK)
set(BDWGC_INCLUDE_DIR NOTFOUND)
set(BDWGC_LIBRARIES NOTFOUND)
# search first if an BDWGCConfig.cmake is available in the system,
# if successful this would set BDWGC_INCLUDE_DIR and the rest of
# the script will work as usual
find_package(BDWGC ${BDWGC_FIND_VERSION} NO_MODULE QUIET)
if(NOT BDWGC_INCLUDE_DIR)
find_path(BDWGC_INCLUDE_DIR NAMES gc/gc.h
HINTS ENV BDWGCDIR
PATHS ${INCLUDE_INSTALL_DIR} ${CMAKE_INSTALL_PREFIX}/include
PATH_SUFFIXES gc bdwgc
)
endif()
if(BDWGC_INCLUDE_DIR)
_gc_check_version()
endif()
if(NOT BDWGC_LIBRARIES)
find_library(BDWGC_LIBRARIES NAMES gc gccpp gc gccpp
HINTS ENV BDWGCDIR
PATHS ${LIB_INSTALL_DIR} ${CMAKE_INSTALL_PREFIX}/lib
)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(BDWGC DEFAULT_MSG BDWGC_INCLUDE_DIR BDWGC_LIBRARIES BDWGC_VERSION_OK)
mark_as_advanced(BDWGC_INCLUDE_DIR BDWGC_LIBRARIES)
endif()
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