2 ## This file is part of the PulseView project.
4 ## Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se>
6 ## This program is free software: you can redistribute it and/or modify
7 ## it under the terms of the GNU General Public License as published by
8 ## the Free Software Foundation, either version 2 of the License, or
9 ## (at your option) any later version.
11 ## This program is distributed in the hope that it will be useful,
12 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ## GNU General Public License for more details.
16 ## You should have received a copy of the GNU General Public License
17 ## along with this program. If not, see <http://www.gnu.org/licenses/>.
20 include(CheckCSourceRuns)
22 function(memaccess_check_unaligned_le _var)
23 if(NOT CMAKE_CROSSCOMPILING)
28 union { uint64_t u64; uint8_t u8[16]; } d;
32 v = *(uint64_t *)(d.u8+1);
33 if (v != 0x0807060504030201ULL)
38 if(CMAKE_CROSSCOMPILING)
39 message(STATUS "Cross compiling - using portable code for memory access")