| # |
| #//===----------------------------------------------------------------------===// |
| #// |
| #// The LLVM Compiler Infrastructure |
| #// |
| #// This file is dual licensed under the MIT and the University of Illinois Open |
| #// Source Licenses. See LICENSE.txt for details. |
| #// |
| #//===----------------------------------------------------------------------===// |
| # |
| |
| # Determine the architecture from predefined compiler macros |
| # The architecture name can only contain alphanumeric characters and underscores (i.e., C identifier) |
| |
| # void get_architecture(string* return_arch) |
| # - Returns the architecture in return_arch |
| function(get_architecture return_arch) |
| set(detect_arch_src_txt " |
| #if defined(__KNC__) |
| #error ARCHITECTURE=mic |
| #elif defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64) |
| #error ARCHITECTURE=32e |
| #elif defined(__i386) || defined(__i386__) || defined(__IA32__) || defined(_M_I86) || defined(_M_IX86) || defined(__X86__) || defined(_X86_) |
| #error ARCHITECTURE=32 |
| #elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) |
| #error ARCHITECTURE=arm |
| #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6ZK__) |
| #error ARCHITECTURE=arm |
| #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__) |
| #error ARCHITECTURE=arm |
| #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) |
| #error ARCHITECTURE=arm |
| #elif defined(__ARM_ARCH_3__) || defined(__ARM_ARCH_3M__) |
| #error ARCHITECTURE=arm |
| #elif defined(__ARM_ARCH_2__) |
| #error ARCHITECTURE=arm |
| #elif defined(__arm__) || defined(_M_ARM) || defined(_ARM) |
| #error ARCHITECTURE=arm |
| #elif defined(__aarch64__) |
| #error ARCHITECTURE=aarch64 |
| #elif defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) |
| #error ARCHITECTURE=ppc64le |
| #elif defined(__powerpc64__) |
| #error ARCHITECTURE=ppc64 |
| #else |
| #error ARCHITECTURE=UnknownArchitecture |
| #endif |
| " |
| ) |
| # Write out ${detect_arch_src_txt} to a file within the cmake/ subdirectory |
| file(WRITE "${LIBOMP_WORK}/cmake/detect_arch.c" ${detect_arch_src_txt}) |
| |
| # Try to compile using the C Compiler. It will always error out with an #error directive, so store error output to ${local_architecture} |
| try_run(run_dummy compile_dummy "${CMAKE_CURRENT_BINARY_DIR}" "${LIBOMP_WORK}/cmake/detect_arch.c" COMPILE_OUTPUT_VARIABLE local_architecture) |
| |
| # Match the important architecture line and store only that matching string in ${local_architecture} |
| string(REGEX MATCH "ARCHITECTURE=([a-zA-Z0-9_]+)" local_architecture "${local_architecture}") |
| |
| # Get rid of the ARCHITECTURE= part of the string |
| string(REPLACE "ARCHITECTURE=" "" local_architecture "${local_architecture}") |
| |
| # set the return value to the architecture detected (e.g., 32e, 32, arm, ppc64, etc.) |
| set(${return_arch} "${local_architecture}" PARENT_SCOPE) |
| |
| # Remove ${detect_arch_src_txt} from cmake/ subdirectory |
| file(REMOVE "${LIBOMP_WORK}/cmake/detect_arch.c") |
| endfunction() |