Source deps need to be mandatory on non- x86-linux-gnu

precompiled/serde_derive/Cargo.toml

@@ -22,11 +22,18 @@ from_source = ["proc-macro2", "quote", "syn"]
 [lib]
 proc-macro = true
 
+# By feature source compilation
 [dependencies]
 proc-macro2 = { version = "1", optional = true }
 quote = { version = "1", optional = true }
 syn = { version = "2.0.28", optional = true }
 
+# Sourc compiling when no precompiled available
+[target.'cfg(not(all(target_arch = "x86_64", target_os = "linux", target_env = "gnu")))'.dependencies]
+proc-macro2 = "1"
+quote = "1"
+syn = "2.0.28"
+
 [dev-dependencies]
 serde = { version = "1", path = "../../serde" }