the name <whatever> is defined multiple times + cannot find `T` in this scope

Input C/C++ Header

#include <wx/wx.h>

really sorry for the include. I just don't know how to reproduce this minimally. It's just wxWidgets 3.1.3, built from source on macOS 10.14.6.

Bindgen Invocation

bindgen::Builder::default()
	.header("wrapper.hpp")
	.detect_include_paths(false)
	.clang_args(cxx_flags)
	.parse_callbacks(Box::new(bindgen::CargoCallbacks))
	.whitelist_type("wx.*")
	.opaque_type("(::)?std::.*")
	.generate()
	.expect("Couldn't make bindings!");

Actual Results

error[E0428]: the name `CharType` is defined multiple times
     --> wxRust_sys/src/bindings.rs:68988:1
      |
68930 | pub type CharType = ::std::os::raw::c_char;
      | ------------------------------------------- previous definition of the type `CharType` here
...
68988 | pub type CharType = u32;
      | ^^^^^^^^^^^^^^^^^^^^^^^^ `CharType` redefined here
      |
      = note: `CharType` must be defined only once in the type namespace of this module

error[E0428]: the name `pointer` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69028:1
      |
69027 | pub type pointer = pointer;
      | --------------------------- previous definition of the type `pointer` here
69028 | pub type pointer = type_;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^ `pointer` redefined here
      |
      = note: `pointer` must be defined only once in the type namespace of this module

error[E0428]: the name `type_` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69030:1
      |
69029 | pub type type_ = type_;
      | ----------------------- previous definition of the type `type_` here
69030 | pub type type_ = pointer;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^ `type_` redefined here
      |
      = note: `type_` must be defined only once in the type namespace of this module

error[E0428]: the name `pointer` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69031:1
      |
69027 | pub type pointer = pointer;
      | --------------------------- previous definition of the type `pointer` here
...
69031 | pub type pointer = *mut u32;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `pointer` redefined here
      |
      = note: `pointer` must be defined only once in the type namespace of this module

error[E0428]: the name `const_pointer` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69147:1
      |
69146 | pub type const_pointer = const_pointer;
      | --------------------------------------- previous definition of the type `const_pointer` here
69147 | pub type const_pointer = type_;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_pointer` redefined here
      |
      = note: `const_pointer` must be defined only once in the type namespace of this module

error[E0428]: the name `type_` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69148:1
      |
69029 | pub type type_ = type_;
      | ----------------------- previous definition of the type `type_` here
...
69148 | pub type type_ = const_pointer;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `type_` redefined here
      |
      = note: `type_` must be defined only once in the type namespace of this module

error[E0428]: the name `const_pointer` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69149:1
      |
69146 | pub type const_pointer = const_pointer;
      | --------------------------------------- previous definition of the type `const_pointer` here
...
69149 | pub type const_pointer = *const u32;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_pointer` redefined here
      |
      = note: `const_pointer` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69365:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
69365 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69406:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69406 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69407:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69407 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69408:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69408 | pub type value_type = ::std::os::raw::c_char;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69448:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69448 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69449:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69449 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69450:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69450 | pub type value_type = ::std::os::raw::c_short;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69490:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69490 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69491:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69491 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69492:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69492 | pub type value_type = ::std::os::raw::c_int;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69532:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69532 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69533:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69533 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69534:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69534 | pub type value_type = ::std::os::raw::c_long;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69574:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69574 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69575:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69575 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69576:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69576 | pub type value_type = ::std::os::raw::c_ulong;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69616:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69616 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69617:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69617 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69618:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69618 | pub type value_type = f64;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69814:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69814 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69815:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69815 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69816:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69816 | pub type value_type = *mut ::std::os::raw::c_void;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69877:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69877 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69878:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
69878 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:69879:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
69879 | pub type value_type = *mut wxDateTimeHolidayAuthority;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70072:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70072 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70073:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70073 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70074:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
70074 | pub type value_type = *const wxEventTableEntry;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70114:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70114 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70115:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70115 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70116:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
70116 | pub type value_type = *mut wxEvtHandler;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70156:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70156 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70157:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70157 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70158:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
70158 | pub type value_type = *mut wxClassInfo;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70390:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70390 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70391:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70391 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70392:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
70392 | pub type value_type = *mut ::std::os::raw::c_char;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70490:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70490 | pub type const_reference = const_reference;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `const_reference` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70491:1
      |
69364 | pub type const_reference = const_reference;
      | ------------------------------------------- previous definition of the type `const_reference` here
...
70491 | pub type const_reference = *const value_type;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `const_reference` redefined here
      |
      = note: `const_reference` must be defined only once in the type namespace of this module

error[E0428]: the name `value_type` is defined multiple times
     --> wxRust_sys/src/bindings.rs:70492:1
      |
69366 | pub type value_type = *const ::std::os::raw::c_void;
      | ---------------------------------------------------- previous definition of the type `value_type` here
...
70492 | pub type value_type = *mut wxToolTip;
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `value_type` redefined here
      |
      = note: `value_type` must be defined only once in the type namespace of this module

error[E0412]: cannot find type `T` in this scope
    --> wxRust_sys/src/bindings.rs:6860:53
     |
6860 | pub type wxBaseArray_CMPFUNC = wxArray_SortFunction<T>;
     |                             -                       ^ not found in this scope
     |                             |
     |                             help: you might be missing a type parameter: `<T>`

error[E0412]: cannot find type `T` in this scope
    --> wxRust_sys/src/bindings.rs:6881:28
     |
6880 | pub struct wxBaseObjectArray {
     |                             - help: you might be missing a type parameter: `<T>`
6881 |     pub _base: wxBaseArray<T>,
     |                            ^ not found in this scope

error[E0412]: cannot find type `T` in this scope
    --> wxRust_sys/src/bindings.rs:6883:47
     |
6883 | pub type wxBaseObjectArray_base = wxBaseArray<T>;
     |                                -              ^ not found in this scope
     |                                |
     |                                help: you might be missing a type parameter: `<T>`

Generated file: bindings.rs.zip

Start with the bindgen::Builder invocation and wrapper.hpp, using the wx/wx.h include and the stated wxWidgets/macOS setup. Inspect the generated wxRust_sys/src/bindings.rs around the reported duplicate definitions and determine a reproducible case. Done means bindgen no longer emits conflicting definitions or the failure is clearly diagnosed with a focused reproduction.