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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
# Reference tables
## Compiler ids
These are return values of the `get_id` (Compiler family) and
`get_argument_syntax` (Argument syntax) method in a compiler object.
| Value | Compiler family | Argument syntax |
| ----- | --------------- | --------------- |
| arm | ARM compiler | |
| armclang | ARMCLANG compiler | |
| c2000 | Texas Instruments C2000 compiler | |
| ccrx | Renesas RX Family C/C++ compiler | |
| clang | The Clang compiler | gcc |
| clang-cl | The Clang compiler (MSVC compatible driver) | msvc |
| dmd | D lang reference compiler | |
| emscripten| Emscripten WASM compiler | |
| flang | Flang Fortran compiler | |
| g95 | The G95 Fortran compiler | |
| gcc | The GNU Compiler Collection | gcc |
| intel | Intel compiler (Linux and Mac) | gcc |
| intel-cl | Intel compiler (Windows) | msvc |
| lcc | Elbrus C/C++/Fortran Compiler | |
| llvm | LLVM-based compiler (Swift, D) | |
| mono | Xamarin C# compiler | |
| msvc | Microsoft Visual Studio | msvc |
| nagfor | The NAG Fortran compiler | |
| open64 | The Open64 Fortran Compiler | |
| pathscale | The Pathscale Fortran compiler | |
| pgi | Portland PGI C/C++/Fortran compilers | |
| rustc | Rust compiler | |
| sun | Sun Fortran compiler | |
| valac | Vala compiler | |
| xc16 | Microchip XC16 C compiler | |
## Linker ids
These are return values of the `get_linker_id` method in a compiler object.
| Value | Linker family |
| ----- | --------------- |
| ld.bfd | The GNU linker |
| ld.gold | The GNU gold linker |
| ld.lld | The LLVM linker, with the GNU interface |
| ld.solaris | Solaris and illumos |
| ld.wasm | emscripten's wasm-ld linker |
| ld64 | Apple ld64 |
| link | MSVC linker |
| lld-link | The LLVM linker, with the MSVC interface |
| xilink | Used with Intel-cl only, MSVC like |
| optlink | optlink (used with DMD) |
| rlink | The Renesas linker, used with CCrx only |
| xc16-ar | The Microchip linker, used with XC16 only |
| ar2000 | The Texas Instruments linker, used with C2000 only |
| armlink | The ARM linker (arm and armclang compilers) |
| pgi | Portland/Nvidia PGI |
| nvlink | Nvidia Linker used with cuda |
For languages that don't have separate dynamic linkers such as C# and Java, the
`get_linker_id` will return the compiler name.
## Script environment variables
| Value | Comment |
| ----- | ------- |
| MESONINTROSPECT | Command to run to run the introspection command, may be of the form `python /path/to/meson introspect`, user is responsible for splitting the path if necessary. |
| MESON_BUILD_ROOT | Absolute path to the build dir |
| MESON_DIST_ROOT | Points to the root of the staging directory, only set when running `dist` scripts |
| MESON_SOURCE_ROOT | Absolute path to the source dir |
| MESON_SUBDIR | Current subdirectory, only set for `run_command` |
## CPU families
These are returned by the `cpu_family` method of `build_machine`,
`host_machine` and `target_machine`. For cross compilation they are
set in the cross file.
| Value | Comment |
| ----- | ------- |
| aarch64 | 64 bit ARM processor |
| alpha | DEC Alpha processor |
| arc | 32 bit ARC processor |
| arm | 32 bit ARM processor |
| avr | Atmel AVR processor |
| e2k | MCST Elbrus processor |
| c2000 | 32 bit C2000 processor |
| ia64 | Itanium processor |
| m68k | Motorola 68000 processor |
| microblaze | MicroBlaze processor |
| mips | 32 bit MIPS processor |
| mips64 | 64 bit MIPS processor |
| parisc | HP PA-RISC processor |
| ppc | 32 bit PPC processors |
| ppc64 | 64 bit PPC processors |
| riscv32 | 32 bit RISC-V Open ISA |
| riscv64 | 64 bit RISC-V Open ISA |
| rl78 | Renesas RL78 |
| rx | Renesas RX 32 bit MCU |
| s390 | IBM zSystem s390 |
| s390x | IBM zSystem s390x |
| sparc | 32 bit SPARC |
| sparc64 | SPARC v9 processor |
| wasm32 | 32 bit Webassembly |
| wasm64 | 64 bit Webassembly |
| pic24 | 16 bit Microchip PIC24 |
| dspic | 16 bit Microchip dsPIC |
| x86 | 32 bit x86 processor |
| x86_64 | 64 bit x86 processor |
Any cpu family not listed in the above list is not guaranteed to
remain stable in future releases.
Those porting from autotools should note that meson does not add
endianness to the name of the cpu_family. For example, autotools
will call little endian PPC64 "ppc64le", meson will not, you must
also check the `.endian()` value of the machine for this information.
## Operating system names
These are provided by the `.system()` method call.
| Value | Comment |
| ----- | ------- |
| cygwin | The Cygwin environment for Windows |
| darwin | Either OSX or iOS |
| dragonfly | DragonFly BSD |
| emscripten | Emscripten's Javascript environment |
| freebsd | FreeBSD and its derivatives |
| gnu | GNU Hurd |
| haiku | |
| linux | |
| netbsd | |
| openbsd | |
| windows | Any version of Windows |
| sunos | illumos and Solaris |
Any string not listed above is not guaranteed to remain stable in
future releases.
## Language arguments parameter names
These are the parameter names for passing language specific arguments to your build target.
| Language | compiler name | linker name |
| ------------- | ------------- | ----------------- |
| C | c_args | c_link_args |
| C++ | cpp_args | cpp_link_args |
| C# | cs_args | cs_link_args |
| D | d_args | d_link_args |
| Fortran | fortran_args | fortran_link_args |
| Java | java_args | java_link_args |
| Objective C | objc_args | objc_link_args |
| Objective C++ | objcpp_args | objcpp_link_args |
| Rust | rust_args | rust_link_args |
| Vala | vala_args | vala_link_args |
## Compiler and linker flag environment variables
These environment variables will be used to modify the compiler and
linker flags.
It is recommended that you **do not use these**. They are provided purely to
for backwards compatibility with other build systems. There are many caveats to
their use, especially when rebuilding the project. It is **highly** recommended
that you use [the command line arguments](#language-arguments-parameter-names)
instead.
| Name | Comment |
| ----- | ------- |
| CFLAGS | Flags for the C compiler |
| CXXFLAGS | Flags for the C++ compiler |
| OBJCFLAGS | Flags for the Objective C compiler |
| FFLAGS | Flags for the Fortran compiler |
| DFLAGS | Flags for the D compiler |
| VALAFLAGS | Flags for the Vala compiler |
| RUSTFLAGS | Flags for the Rust compiler |
| LDFLAGS | The linker flags, used for all languages |
## Function Attributes
These are the parameters names that are supported using
`compiler.has_function_attribute()` or
`compiler.get_supported_function_attributes()`
### GCC `__attribute__`
These values are supported using the GCC style `__attribute__` annotations,
which are supported by GCC, Clang, and other compilers.
| Name |
|----------------------|
| alias |
| aligned |
| alloc_size |
| always_inline |
| artificial |
| cold |
| const |
| constructor |
| constructor_priority |
| deprecated |
| destructor |
| error |
| externally_visible |
| fallthrough |
| flatten |
| format |
| format_arg |
| gnu_inline |
| hot |
| ifunc |
| malloc |
| noclone |
| noinline |
| nonnull |
| noreturn |
| nothrow |
| optimize |
| packed |
| pure |
| returns_nonnull |
| unused |
| used |
| visibility* |
| visibility:defaultâ |
| visibility:hiddenâ |
| visibility:internalâ |
| visibility:protectedâ |
| warning |
| warn_unused_result |
| weak |
| weakreaf |
\* *Changed in 0.52.0* the "visibility" target no longer includes
"protected", which is not present in Apple's clang.
â *New in 0.52.0* These split visibility attributes are preferred to the plain
"visibility" as they provide narrower checks.
### MSVC __declspec
These values are supported using the MSVC style `__declspec` annotation,
which are supported by MSVC, GCC, Clang, and other compilers.
| Name |
|----------------------|
| dllexport |
| dllimport |
## Dependency lookup methods
These are the values that can be passed to `dependency` function's
`method` keyword argument.
| Name | Comment |
| ----- | ------- |
| auto | Automatic method selection |
| pkg-config | Use Pkg-Config |
| cmake | Look up as a CMake module |
| config-tool | Use a custom dep tool such as `cups-config` |
| system | System provided (e.g. OpenGL) |
| extraframework | A macOS/iOS framework |
## Compiler and Linker selection variables
| Language | Compiler | Linker | Note |
|---------------|----------|-----------|---------------------------------------------|
| C | CC | CC_LD | |
| C++ | CXX | CXX_LD | |
| D | DC | DC_LD | Before 0.54 D_LD* |
| Fortran | FC | FC_LD | Before 0.54 F_LD* |
| Objective-C | OBJC | OBJC_LD | |
| Objective-C++ | OBJCXX | OBJCXX_LD | Before 0.54 OBJCPP_LD* |
| Rust | RUSTC | RUSTC_LD | Before 0.54 RUST_LD* |
| Vala | VALAC | | Use CC_LD. Vala transpiles to C |
| C# | CSC | CSC | The linker is the compiler |
*The old environment variales are still supported, but are deprecated and will
be removed in a future version of meson.
|
