Added:

- `sharedlib` build kind (shared library output)
- ASM projects (`build.language = "asm"`)
- NASM and GAS backends
- `build.platform` architecture hint for `-march` / `/arch`
- Basic CLI integration tests

src/core/builder/clang.rs

@@ -150,10 +150,10 @@ fn build_objects(
             if ctx.kind == "sharedlib" {
                 cmd.arg("-fPIC");
             }
-            if let Some(platform) = ctx.platform {
-                if !platform.trim().is_empty() {
-                    cmd.arg(format!("-march={}", platform));
-                }
+            if let Some(platform) = ctx.platform
+                && !platform.trim().is_empty()
+            {
+                cmd.arg(format!("-march={}", platform));
             }
             if !ctx.standard.is_empty() && ctx.language.to_lowercase() != "asm" {
                 cmd.arg(format!("-std={}", ctx.standard));

src/core/builder/gas.rs

@@ -9,7 +9,11 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     if ctx.language.to_lowercase().as_str() != "asm" {
         return Err("GAS backend requires build.language = \"asm\"".to_string());
     }
-    let assembler = if ctx.compiler.is_empty() { "as" } else { ctx.compiler };
+    let assembler = if ctx.compiler.is_empty() {
+        "as"
+    } else {
+        ctx.compiler
+    };
     let start_time = Instant::now();
     let sources = collect_sources(ctx.language)?;
     let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
@@ -17,7 +21,11 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
     if ctx.kind == "staticlib" {
         let lib_path = platform::lib_path(ctx.profile, ctx.project_name, ctx.target_dir);
-        let mut cmd = Command::new(if cfg!(target_os = "windows") { "lib" } else { "ar" });
+        let mut cmd = Command::new(if cfg!(target_os = "windows") {
+            "lib"
+        } else {
+            "ar"
+        });
         if cfg!(target_os = "windows") {
             cmd.arg("/nologo").arg(format!("/OUT:{lib_path}"));
         } else {

src/core/builder/gcc.rs

@@ -150,10 +150,10 @@ fn build_objects(
             if ctx.kind == "sharedlib" {
                 cmd.arg("-fPIC");
             }
-            if let Some(platform) = ctx.platform {
-                if !platform.trim().is_empty() {
-                    cmd.arg(format!("-march={}", platform));
-                }
+            if let Some(platform) = ctx.platform
+                && !platform.trim().is_empty()
+            {
+                cmd.arg(format!("-march={}", platform));
             }
             if !ctx.standard.is_empty() && ctx.language.to_lowercase() != "asm" {
                 cmd.arg(format!("-std={}", ctx.standard));

src/core/builder/mod.rs

@@ -1,4 +1,5 @@
 pub mod clang;
+pub mod gas;
 pub mod gcc;
 pub mod gas;
 pub mod msvc;

src/core/builder/nasm.rs

@@ -21,7 +21,11 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
     if ctx.kind == "staticlib" {
         let lib_path = platform::lib_path(ctx.profile, ctx.project_name, ctx.target_dir);
-        let mut cmd = Command::new(if cfg!(target_os = "windows") { "lib" } else { "ar" });
+        let mut cmd = Command::new(if cfg!(target_os = "windows") {
+            "lib"
+        } else {
+            "ar"
+        });
         if cfg!(target_os = "windows") {
             cmd.arg("/nologo").arg(format!("/OUT:{lib_path}"));
         } else {
@@ -40,7 +44,7 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         }
     }
 
-    let linker = if cfg!(target_os = "windows") { "cc" } else { "cc" };
+    let linker = "cc";
     let mut cmd = Command::new(linker);
     if ctx.kind == "sharedlib" {
         if cfg!(target_os = "macos") {
@@ -128,7 +132,11 @@ fn build_objects(
         }
         if needs_rebuild(source, &obj_path) {
             let mut cmd = Command::new(assembler);
-            cmd.arg("-f").arg(format).arg(source).arg("-o").arg(&obj_path);
+            cmd.arg("-f")
+                .arg(format)
+                .arg(source)
+                .arg("-o")
+                .arg(&obj_path);
             for flag in ctx.cflags {
                 cmd.arg(flag);
             }
@@ -163,15 +171,15 @@ fn nasm_format(platform: Option<&str>) -> &'static str {
     }
     #[cfg(target_os = "linux")]
     {
-        return "elf64";
+        "elf64"
     }
     #[cfg(target_os = "macos")]
     {
-        return "macho64";
+        "macho64"
     }
     #[cfg(target_os = "windows")]
     {
-        return "win64";
+        "win64"
     }
     #[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
     {

src/core/config.rs

@@ -121,10 +121,13 @@ impl Config {
                 return Err(ConfigError::Invalid(format!("build.{key} is empty")));
             }
         }
-        if let Some(platform) = build.get("platform") {
-            if !platform.as_str().map(|v| !v.trim().is_empty()).unwrap_or(false) {
-                return Err(ConfigError::Invalid("build.platform is empty".into()));
-            }
+        if let Some(platform) = build.get("platform")
+            && !platform
+                .as_str()
+                .map(|v| !v.trim().is_empty())
+                .unwrap_or(false)
+        {
+            return Err(ConfigError::Invalid("build.platform is empty".into()));
         }
         if let Some(kind) = build.get("kind").and_then(|v| v.as_str()) {
             let kind = kind.trim();