cbindgen: Allow generating multiple files on one Rust target

User may want to generate both a C and a separate C++ header file
corrosion-rs · Apr 23, 2024 · fdd9f27 · fdd9f27
1 parent f6178e6
commit fdd9f27
Showing 1 changed file with 12 additions and 4 deletions.
diff --git a/cmake/Corrosion.cmake b/cmake/Corrosion.cmake
@@ -1681,11 +1681,19 @@ function(corrosion_experimental_cbindgen)
  )
  endif()
 
- add_custom_target(_corrosion_cbindgen_${rust_target}_bindings
- DEPENDS "${generated_header}"
- COMMENT "Generate cbindgen bindings for package ${rust_cargo_package}"
+ if(NOT TARGET "_corrosion_cbindgen_${rust_target}_bindings")
+ add_custom_target(_corrosion_cbindgen_${rust_target}_bindings
+ COMMENT "Generate cbindgen bindings for package ${rust_cargo_package}"
+ )
+ endif()
+ # Users might want to call cbindgen multiple times, e.g. to generate separate C++ and C header files.
+ string(MAKE_C_IDENTIFIER "${generated_header}" header_identifier )
+ add_custom_target("_corrosion_cbindgen_${rust_target}_bindings_${header_identifier}"
+ DEPENDS "${generated_header}"
+ COMMENT "Generate ${generated_header} for ${rust_target}"
  )
- add_dependencies(${rust_target} _corrosion_cbindgen_${rust_target}_bindings)
+ add_dependencies("_corrosion_cbindgen_${rust_target}_bindings" "_corrosion_cbindgen_${rust_target}_bindings_${header_identifier}")
+ add_dependencies(${rust_target} "_corrosion_cbindgen_${rust_target}_bindings")
 endfunction()
 
 # Parse the version of a Rust package from it's package manifest (Cargo.toml)