# - Try to find Boehm GC
# Once done, this will define
#
# BOEHM_GC_FOUND - system has Boehm GC
# BOEHM_GC_INCLUDE_DIR - the Boehm GC include directories
# BOEHM_GC_LIBRARIES - link these to use Boehm GC
#
# Copyright (c) 2010-2015 Takashi Kato <ktakashi@ymail.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $Id: $
#
# CMake module to find Boehm GC
# use pkg-config if available
FIND_PACKAGE(PkgConfig)
PKG_CHECK_MODULES(PC_BDW_GC QUIET bdw-gc)
# try newer one first in case of gc.h is overwritten.
FIND_PATH(BOEHM_GC_INCLUDE_DIR gc/gc.h
HINTS ${PC_BDW_GC_INCLUDEDIR} ${PC_BDW_GC_INCLUDE_DIRS})
IF (NOT BOEHM_GC_INCLUDE_DIR)
FIND_PATH(BOEHM_GC_INCLUDE_DIR gc.h
HINTS ${PC_BDW_GC_INCLUDEDIR} ${PC_BDW_GC_INCLUDE_DIRS})
IF (BOEHM_GC_INCLUDE_DIR)
SET(HAVE_GC_H TRUE)
ENDIF()
ELSE()
SET(HAVE_GC_GC_H TRUE)
ENDIF()
# For FreeBSD we need to use gc-threaded
IF (${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
# checks if 'gc' supports 'GC_get_parallel' and if it does
# then use it
INCLUDE(${CMAKE_ROOT}/Modules/CheckCSourceCompiles.cmake)
# not sure if this links properly...
FIND_LIBRARY(BOEHM_GC_LIBRARIES NAMES gc
HINTS ${PC_BDW_GC_LIBDIR} ${PC_BDW_GC_LIBRARY_DIRS})
MESSAGE(STATUS "GC library ${BOEHM_GC_LIBRARIES}")
SET(CMAKE_REQUIRED_LIBRARIES "gc")
SET(CMAKE_REQUIRED_DEFINITIONS "-DGC_THREADS")
SET(CMAKE_REQUIRED_INCLUDES "${BOEHM_GC_INCLUDE_DIR}")
SET(CMAKE_REQUIRED_FLAGS "-L${PC_BDW_GC_LIBRARY_DIRS}")
MESSAGE(STATUS "Boehm GC include dir: ${CMAKE_REQUIRED_INCLUDES}")
CHECK_C_SOURCE_RUNS(
"#include <gc.h>
int main() {
int i= GC_get_parallel();
return 0;
}
" GC_GET_PARALLEL_WORKS)
IF (NOT GC_GET_PARALLEL_WORKS)
MESSAGE(STATUS "Try gc-threaded")
# bdw-gc-threaded is the proper name for FreeBSD pkg-config
PKG_CHECK_MODULES(PC_BDW_GC_THREADED bdw-gc-threaded)
FIND_LIBRARY(BOEHM_GC_THREADED_LIBRARIES NAMES gc-threaded
HINTS ${PC_BDW_GC_THREADED_LIBDIR} ${PC_BDW_GC_THREADED_THREADED_DIRS})
MESSAGE(STATUS "GC threaded library ${BOEHM_GC_THREADED_LIBRARIES}")
IF (BOEHM_GC_THREADED_LIBRARIES)
# OK just use it
SET(BOEHM_GC_LIBRARIES "${BOEHM_GC_THREADED_LIBRARIES}")
ENDIF()
ENDIF()
ELSE()
FIND_LIBRARY(BOEHM_GC_LIBRARIES NAMES gc
HINTS ${PC_BDW_GC_LIBDIR} ${PC_BDW_GC_LIBRARY_DIRS})
# OpenSolaris uses bgc as Boehm GC runtime in its package manager.
# so try it
IF (NOT BOEHM_GC_LIBRARIES)
FIND_LIBRARY(BOEHM_GC_LIBRARIES NAMES bgc
HINTS ${PC_BDW_GC_LIBDIR} ${PC_BDW_GC_LIBRARY_DIRS})
ENDIF()
ENDIF()
MESSAGE(STATUS "Found GC library: ${BOEHM_GC_LIBRARIES}")
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Boehm_GC DEFAULT_MSG
BOEHM_GC_LIBRARIES BOEHM_GC_INCLUDE_DIR)
MARK_AS_ADVANCED(BOEHM_GC_LIBRARIES BOEHM_GC_INCLUDE_DIR)
