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