fix: set compiler flags for MacOS in the build script

The flags set in cargo config will be ignored if the `RUSTFLAGS` is set.

Author: bavshin-f5

.cargo/config.toml

@@ -1,16 +1,2 @@
-#
-# https://stackoverflow.com/questions/28124221/error-linking-with-cc-failed-exit-code-1
-#
-[target.aarch64-apple-darwin]
-rustflags = [
-  "-C", "link-arg=-undefined",
-  "-C", "link-arg=dynamic_lookup",
-]
-[target.x86_64-apple-darwin]
-rustflags = [
-  "-C", "link-arg=-undefined",
-  "-C", "link-arg=dynamic_lookup",
-]
-
 [env]
 CACHE_DIR = { value = ".cache", relative = true }

build.rs

@@ -43,4 +43,11 @@ fn main() {
     //         println!("cargo::rustc-cfg=nginx1_27_0");
     //     }
     // }
+
+    // Generate required compiler flags
+    if cfg!(target_os = "macos") {
+        // https://stackoverflow.com/questions/28124221/error-linking-with-cc-failed-exit-code-1
+        println!("cargo::rustc-link-arg=-undefined");
+        println!("cargo::rustc-link-arg=dynamic_lookup");
+    }
 }