1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
| #
#//===----------------------------------------------------------------------===//
#//
#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
#// See https://llvm.org/LICENSE.txt for license information.
#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#//
#//===----------------------------------------------------------------------===//
#
# 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(libomp_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=x86_64
#elif defined(__i386) || defined(__i386__) || defined(__IA32__) || defined(_M_I86) || defined(_M_IX86) || defined(__X86__) || defined(_X86_)
#error ARCHITECTURE=i386
#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
#elif defined(__mips__) && defined(__mips64)
#error ARCHITECTURE=mips64
#elif defined(__mips__) && !defined(__mips64)
#error ARCHITECTURE=mips
#elif defined(__riscv) && __riscv_xlen == 64
#error ARCHITECTURE=riscv64
#else
#error ARCHITECTURE=UnknownArchitecture
#endif
")
# Write out ${detect_arch_src_txt} to a file within the cmake/ subdirectory
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/libomp_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}" "${CMAKE_CURRENT_BINARY_DIR}/libomp_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 ${detect_arch_src_txt} from cmake/ subdirectory
file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/libomp_detect_arch.c")
endfunction()
|