diff options
| author | Dylan Baker <dylan@pnwbakers.com> | 2019-06-24 14:02:26 -0700 |
|---|---|---|
| committer | Jussi Pakkanen <jpakkane@gmail.com> | 2019-06-25 00:02:26 +0300 |
| commit | e2039da5d99dc8fe4255069ef8ab14459766bf2d (patch) | |
| tree | c6598d9778cd27a8d172ab2eac8ae745deeb986c /docs | |
| parent | 42bef8d418a8f981889a54e6e4b120f6243e54bc (diff) | |
| download | meson-e2039da5d99dc8fe4255069ef8ab14459766bf2d.tar.gz | |
Split attribute visibility
* c_function_attributes: remove 'protected' from 'visibility'
This doesn't exist on macos with the apple compiler, which always causes
failures.
Fixes #5530
* compilers: Add split visibility checks to has_function_attribute
These check for a single visibility at a time, rather than all four at
once. This allows for finer grained searches, and should make using
these checks safer across operating systems.
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/markdown/Reference-tables.md | 12 | ||||
| -rw-r--r-- | docs/markdown/snippets/split-visibility-attributes.md | 14 |
2 files changed, 25 insertions, 1 deletions
diff --git a/docs/markdown/Reference-tables.md b/docs/markdown/Reference-tables.md index 682e50820..84ce06f41 100644 --- a/docs/markdown/Reference-tables.md +++ b/docs/markdown/Reference-tables.md @@ -182,12 +182,22 @@ which are supported by GCC, Clang, and other compilers. | returns_nonnull | | unused | | used | -| visibility | +| visibility* | +| visibility:default† | +| visibility:hidden† | +| visibility:internal† | +| visibility:protected†| | 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. + +† *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, diff --git a/docs/markdown/snippets/split-visibility-attributes.md b/docs/markdown/snippets/split-visibility-attributes.md new file mode 100644 index 000000000..e8cd1520a --- /dev/null +++ b/docs/markdown/snippets/split-visibility-attributes.md @@ -0,0 +1,14 @@ +## Splitting of Compiler.get_function_attribute('visibility') + +On macOS there is no `protected` visibility, which results in the visbility +check always failing. 0.52.0 introduces two changes to improve this situation: + +1. the "visibility" check no longer includes "protected" +2. a new set of "split" checks are introduced which check for a single + attribute instead of all attributes. + +These new attributes are: +* visibility:default +* visibility:hidden +* visibility:internal +* visibility:protected
\ No newline at end of file |