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* Generate extern wrappers for inlined functions
If bindgen finds an inlined function and the
`--generate-extern-functions` options is enabled, then:
- It will generate two new source and header files with external
functions that wrap the inlined functions.
- Rerun `Bindings::generate` using the new header file to include these
wrappers in the generated bindings.
The following additional options were added:
- `--extern-function-suffix=<suffix>`: Adds <suffix> to the name of each
external wrapper function (`__extern` is used by default).
- `--extern-functions-file-name=<name>`: Uses <name> as the file name
for the header and source files (`extern` is used by default).
- `--extern-function-directory=<dir>`: Creates the source and header
files inside <dir> (`/tmp/bindgen` is used by default).
The C code serialization is experimental and only supports a very
limited set of C functions.
Fixes #1090.
---------
Co-authored-by: Amanjeev Sethi <aj@amanjeev.com>
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Fixes #2008.
Example:
```c
enum Enum { Variant };
typedef int16_t Enum;
```
This is valid and idiomatic C (though not valid C++). `cbindgen` uses this idiom as the default C translation of Rust enums, the equivalent of what would be `enum Enum : int16_t { Variant };` in C++.
`bindgen header.h` before:
```rust
pub const Enum_Variant: Enum = 0;
pub type Enum = ::std::os::raw::c_uint;
pub type Enum = i16;
```
```console
error[E0428]: the name `Enum` is defined multiple times
--> generated.rs:3:1
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2 | pub type Enum = ::std::os::raw::c_uint;
| --------------------------------------- previous definition of the type `Enum` here
3 | pub type Enum = i16;
| ^^^^^^^^^^^^^^^^^^^^ `Enum` redefined here
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= note: `Enum` must be defined only once in the type namespace of this module
```
After:
```rust
pub const Enum_Variant: Enum = 0;
pub type Enum = i16;
```
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This reverts commit e8ffb42ab66405ac56d04494a30e54b584f2d4dd and adds a new `--wrap-unsafe-ops` option as a workaround.
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* Allow callback composition
Store all the callbacks added to the builder in a `Vec` so bindgen
invokes each one of them in a last-to-first manner.
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This is done by moving all the remaining `Builder` state into
`BindgenOptions` so any internal logic that affects `Builder` state only
runs once the builder is consumed by `Builder::generate`:
- move `input_headers` to `BindgenOptions`.
- move `input_header_contents` to `BindgenOptions`.
- derive `Clone` for `Builder`.
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Fixes #2293
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remove `clap` dependency :tada:
update the book installation instructions
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