diff --git a/src/target_config.rs b/src/target_config.rs
index c9cf88a..7af69cf 100644
--- a/src/target_config.rs
+++ b/src/target_config.rs
@@ -10,7 +10,6 @@ pub struct TargetConfig {
     pub linker_flags: Vec<String>,
     pub linker_libs: Vec<String>,
     pub sources: Vec<String>,
-    pub sources_cmd: String,
     pub is_default: bool,
 }
 
@@ -25,7 +24,6 @@ impl TargetConfig {
             linker_flags: Vec::new(),
             linker_libs: Vec::new(),
             sources: Vec::new(),
-            sources_cmd: String::from(""),
             is_default: false,
         }
     }
@@ -118,13 +116,6 @@ impl TargetConfig {
                         panic!("fatal: {k} invalid type, must be a array of strings.");
                     }
                 }
-                "sources_cmd" => {
-                    if let Value::String(s) = table.get(k).unwrap() {
-                        ret.sources_cmd = s.to_owned();
-                    } else {
-                        panic!("fatal: {k} invalid type, must be a string.");
-                    }
-                }
                 "default" => {
                     if let Value::Boolean(b) = table.get(k).unwrap() {
                         ret.is_default = *b;
@@ -145,11 +136,8 @@ impl TargetConfig {
             ret.linker = ret.compiler.clone();
         }
 
-        if (ret.sources == Vec::<String>::new()) && (ret.sources_cmd == String::from("")) {
-            panic!("fatal: must specify EITHER sources OR sources_cmd, not both.");
-        }
-        if !(ret.sources == Vec::<String>::new()) && !(ret.sources_cmd == String::from("")) {
-            panic!("fatal: must specify EITHER sources OR sources_cmd");
+        if ret.sources == Vec::<String>::new() {
+            panic!("fatal: you MUST specify at least one source");
         }
 
         ret