generic enum tags

PR to track
mozilla/cbindgen#785
forks
https://github.com/mxyns/cbindgen/tree/merge-generic-tags
https://github.com/mxyns/cargo-c

README.md

@@ -9,6 +9,7 @@ This is still very experimental. The fork of pmacct with the pmacct-gauze integr
 ### Prerequisites
 - working Rust and C environments
 - [cargo-c](https://crates.io/crates/cargo-c)
+  - install my fork `cargo install --git https://github.com/mxyns/cargo-c cargo-c` until this [PR](https://github.com/mozilla/cbindgen/pull/785) has been merged
 - pmacct headers installed (see [install script](tools/install_pmacct_headers.sh))
   - or use the `PMACCT_INCLUDE_DIR` env variable to set the location of the headers but be careful of cyclic dependencies. 
 - the following file tree structure

crates/pmacct-gauze-lib/cbindgen.toml.template

@@ -15,4 +15,6 @@ expand = ["pmacct-gauze-lib"]
 "bridge" = "pmacct-gauze-bindings"
 
 [enum]
-prefix_with_name = true
+prefix_with_name = true
+# This requires the fork cargo-c https://github.com/mxyns/cargo-c
+merge_generic_tags = true