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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
function(SDL_DetectTargetCPUArchitectures DETECTED_ARCHS)
set(known_archs EMSCRIPTEN ARM32 ARM64 ARM64EC LOONGARCH64 POWERPC32 POWERPC64 RISCV32 RISCV64 X86 X64)
if(APPLE AND CMAKE_OSX_ARCHITECTURES)
foreach(known_arch IN LISTS known_archs)
set(SDL_CPU_${known_arch} "0" PARENT_SCOPE)
endforeach()
set(detected_archs)
foreach(osx_arch IN LISTS CMAKE_OSX_ARCHITECTURES)
if(osx_arch STREQUAL "x86_64")
set(SDL_CPU_X64 "1" PARENT_SCOPE)
list(APPEND detected_archs "X64")
elseif(osx_arch STREQUAL "arm64")
set(SDL_CPU_ARM64 "1" PARENT_SCOPE)
list(APPEND detected_archs "ARM64")
endif()
endforeach()
set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE)
return()
endif()
set(detected_archs)
foreach(known_arch IN LISTS known_archs)
if(SDL_CPU_${known_arch})
list(APPEND detected_archs "${known_arch}")
endif()
endforeach()
if(detected_archs)
set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE)
return()
endif()
set(arch_check_ARM32 "defined(__arm__) || defined(_M_ARM)")
set(arch_check_ARM64 "defined(__aarch64__) || defined(_M_ARM64)")
set(arch_check_ARM64EC "defined(_M_ARM64EC)")
set(arch_check_EMSCRIPTEN "defined(__EMSCRIPTEN__)")
set(arch_check_LOONGARCH64 "defined(__loongarch64)")
set(arch_check_POWERPC32 "(defined(__PPC__) || defined(__powerpc__)) && !defined(__powerpc64__)")
set(arch_check_POWERPC64 "defined(__PPC64__) || defined(__powerpc64__)")
set(arch_check_RISCV32 "defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 32")
set(arch_check_RISCV64 "defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen == 64")
set(arch_check_X86 "defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) ||defined( __i386) || defined(_M_IX86)")
set(arch_check_X64 "(defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)) && !defined(_M_ARM64EC)")
set(src_vars "")
set(src_main "")
foreach(known_arch IN LISTS known_archs)
set(detected_${known_arch} "0")
string(APPEND src_vars "
#if ${arch_check_${known_arch}}
#define ARCH_${known_arch} \"1\"
#else
#define ARCH_${known_arch} \"0\"
#endif
const char *arch_${known_arch} = \"INFO<${known_arch}=\" ARCH_${known_arch} \">\";
")
string(APPEND src_main "
result += arch_${known_arch}[argc];")
endforeach()
set(src_arch_detect "${src_vars}
int main(int argc, char *argv[]) {
int result = 0;
(void)argv;
${src_main}
return result;
}")
if(CMAKE_C_COMPILER)
set(ext ".c")
elseif(CMAKE_CXX_COMPILER)
set(ext ".cpp")
else()
enable_language(C)
set(ext ".c")
endif()
set(path_src_arch_detect "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch${ext}")
file(WRITE "${path_src_arch_detect}" "${src_arch_detect}")
set(path_dir_arch_detect "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch")
set(path_bin_arch_detect "${path_dir_arch_detect}/bin")
set(detected_archs)
set(msg "Detecting Target CPU Architecture")
message(STATUS "${msg}")
include(CMakePushCheckState)
set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY")
cmake_push_check_state(RESET)
try_compile(SDL_CPU_CHECK_ALL
"${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeTmp/SDL_detect_arch"
SOURCES "${path_src_arch_detect}"
COPY_FILE "${path_bin_arch_detect}"
)
cmake_pop_check_state()
if(NOT SDL_CPU_CHECK_ALL)
message(STATUS "${msg} - <ERROR>")
message(WARNING "Failed to compile source detecting the target CPU architecture")
else()
set(re "INFO<([A-Z0-9]+)=([01])>")
file(STRINGS "${path_bin_arch_detect}" infos REGEX "${re}")
foreach(info_arch_01 IN LISTS infos)
string(REGEX MATCH "${re}" A "${info_arch_01}")
if(NOT "${CMAKE_MATCH_1}" IN_LIST known_archs)
message(WARNING "Unknown architecture: \"${CMAKE_MATCH_1}\"")
continue()
endif()
set(arch "${CMAKE_MATCH_1}")
set(arch_01 "${CMAKE_MATCH_2}")
set(detected_${arch} "${arch_01}")
endforeach()
foreach(known_arch IN LISTS known_archs)
if(detected_${known_arch})
list(APPEND detected_archs ${known_arch})
endif()
endforeach()
endif()
if(detected_archs)
foreach(known_arch IN LISTS known_archs)
set("SDL_CPU_${known_arch}" "${detected_${known_arch}}" CACHE BOOL "Detected architecture ${known_arch}")
endforeach()
message(STATUS "${msg} - ${detected_archs}")
else()
include(CheckCSourceCompiles)
cmake_push_check_state(RESET)
foreach(known_arch IN LISTS known_archs)
if(NOT detected_archs)
set(cache_variable "SDL_CPU_${known_arch}")
set(test_src "
int main(int argc, char *argv[]) {
#if ${arch_check_${known_arch}}
return 0;
#else
choke
#endif
}
")
check_c_source_compiles("${test_src}" "${cache_variable}")
if(${cache_variable})
set(SDL_CPU_${known_arch} "1" CACHE BOOL "Detected architecture ${known_arch}")
set(detected_archs ${known_arch})
else()
set(SDL_CPU_${known_arch} "0" CACHE BOOL "Detected architecture ${known_arch}")
endif()
endif()
endforeach()
cmake_pop_check_state()
endif()
set("${DETECTED_ARCHS}" "${detected_archs}" PARENT_SCOPE)
endfunction()
|
