build.rs: add proc-macro to generate Override structs for configuration

1 files changed, 4 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index f26581ef..36822e4c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,6 +52,10 @@ pcre2 = { version = "0.2.3", optional = true }
 structopt = { version = "0.3.14", default-features = false }
 svg_crate = { version = "0.8.0", optional = true, package = "svg" }
 
+[build-dependencies]
+syn = { version = "1.0.31", features = [] }
+quote = "^1.0"
+proc-macro2 = "1.0.18"
 
 [profile.release]
 lto = true