1 2# Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3# 4# This program is free software; you can redistribute it and/or modify 5# it under the terms of the GNU General Public License as published by 6# the Free Software Foundation; version 2 of the License. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with this program; if not, write to the Free Software 15# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 16 17# This file includes Linux specific options and quirks, related to system checks 18 19INCLUDE(CheckSymbolExists) 20 21# Something that needs to be set on legacy reasons 22SET(TARGET_OS_LINUX 1) 23SET(HAVE_NPTL 1) 24SET(_GNU_SOURCE 1) 25 26# Fix CMake (< 2.8) flags. -rdynamic exports too many symbols. 27FOREACH(LANG C CXX) 28 STRING(REPLACE "-rdynamic" "" 29 CMAKE_SHARED_LIBRARY_LINK_${LANG}_FLAGS 30 ${CMAKE_SHARED_LIBRARY_LINK_${LANG}_FLAGS} 31 ) 32ENDFOREACH() 33 34# Ensure we have clean build for shared libraries 35# without unresolved symbols 36# Not supported with AddressSanitizer 37IF(NOT WITH_ASAN) 38 SET(LINK_FLAG_NO_UNDEFINED "-Wl,--no-undefined") 39ENDIF() 40 41# 64 bit file offset support flag 42SET(_FILE_OFFSET_BITS 64) 43 44# Linux specific HUGETLB /large page support 45CHECK_SYMBOL_EXISTS(SHM_HUGETLB sys/shm.h HAVE_DECL_SHM_HUGETLB) 46IF(HAVE_DECL_SHM_HUGETLB) 47 SET(HAVE_LARGE_PAGES 1) 48 SET(HUGETLB_USE_PROC_MEMINFO 1) 49 SET(HAVE_LARGE_PAGE_OPTION 1) 50ENDIF() 51