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
|
add_compile_options
-------------------
Add options to the compilation of source files.
.. code-block:: cmake
add_compile_options(<option> ...)
Adds options to the :prop_dir:`COMPILE_OPTIONS` directory property.
These options are used when compiling targets from the current
directory and below.
.. note::
These options are not used when linking.
See the :command:`add_link_options` command for that.
Arguments
^^^^^^^^^
.. |command_name| replace:: ``add_compile_options``
.. include:: include/GENEX_NOTE.rst
.. include:: include/OPTIONS_SHELL.rst
Example
^^^^^^^
Since different compilers support different options, a typical use of
this command is in a compiler-specific conditional clause:
.. code-block:: cmake
if (MSVC)
# warning level 4
add_compile_options(/W4)
else()
# additional warnings
add_compile_options(-Wall -Wextra -Wpedantic)
endif()
To set per-language options, use the :genex:`$<COMPILE_LANGUAGE>`
or :genex:`$<COMPILE_LANGUAGE:languages> <COMPILE_LANGUAGE:languages>`
generator expressions.
See Also
^^^^^^^^
* This command can be used to add any options. However, for
adding preprocessor definitions and include directories it is recommended
to use the more specific commands :command:`add_compile_definitions`
and :command:`include_directories`.
* The command :command:`target_compile_options` adds target-specific options.
* This command adds compile options for all languages.
Use the :genex:`COMPILE_LANGUAGE` generator expression to specify
per-language compile options.
* The source file property :prop_sf:`COMPILE_OPTIONS` adds options to one
source file.
* :command:`add_link_options` adds options for linking.
* :variable:`CMAKE_<LANG>_FLAGS` and :variable:`CMAKE_<LANG>_FLAGS_<CONFIG>`
add language-wide flags passed to all invocations of the compiler.
This includes invocations that drive compiling and those that drive linking.
|
