add out directory option

README.md

@@ -4,6 +4,7 @@ use `./build -h` to see available arguments. supports:
 - changing target
 - custom linker (for `c_native`)
 - running the executable (for `c_native`)
+- setting output path
 
 > [!IMPORTANT]
 > all features, targets, etc, are provisional and subject to change

build

@@ -6,6 +6,7 @@ build_dir=$(CDPATH='' cd -- "$(dirname -- "$0")" && pwd)
 linker=""
 target="c_native"
 run=0
+out="$build_dir/target/lily"
 
 make_build_dir(){
     if ! [ -e "$build_dir/target/build" ]; then
@@ -16,6 +17,13 @@ make_build_dir(){
     fi
 }
 
+check_out_dir(){
+    if ! [ -w "$(dirname "${out}")" ]; then
+        printf "ERROR: Out directory does not exist or is not writeable"
+        exit 1
+    fi
+}
+
 set_target(){
     echo "target := @use(\"./$target.hb\")" > "$build_dir/src/lib/target/target.hb"
 }
@@ -27,6 +35,7 @@ while :; do
     -r/--run: run (Available only on target=c_native)
     -l/--linker: set linker (Available only on target=c_native)
     -t/--target: set target (One of: c_native, hbvm_ableos)
+    -o/--out: set output path
     -h/--help: show help
 examples
     ./build -t hbvm_ableos
@@ -68,6 +77,22 @@ examples
             printf 'ERROR: "--linker" requires a non-empty option argument.\n' >&2
             exit 1
         ;;
+        -o|--out)
+            if [ -n "${2:-}" ]; then
+                out="${2:-}"
+                shift
+            else
+                printf "ERROR: '--out' requires a non-empty option argument." >&2
+                exit 1
+            fi
+        ;;
+        --out=?*)
+            out=${1#*=}
+        ;;
+        --out=)
+            printf 'ERROR: "--out" requires a non-empty option argument.\n' >&2
+            exit 1
+        ;;
         --)
             shift
             break
@@ -90,7 +115,6 @@ if [ $run = 1 ] && [ "$target" = "hbvm_ableos" ]; then
     exit 1
 fi
 
-
 if ! command -v hbc > /dev/null 2>&1; then
     printf "Error: hblang compiler not found. Install it with:
 cargo +nightly install --git https://git.ablecorp.us/ableos/holey-bytes hbc --force" >&2
@@ -112,10 +136,11 @@ if [ "$target" = "c_native" ]; then
     fi
 
     make_build_dir
+    check_out_dir
     set_target
 
     if hbc "$build_dir/src/main.hb" --backend-flags=opt_level=speed > "$build_dir/target/build/lily.o"; then
-        $linker "$build_dir/target/build/lily.o" -o "$build_dir/target/lily"
+        $linker "$build_dir/target/build/lily.o" -o "$out"
         strip -s "$build_dir/target/lily"
     else
         echo "compilation failed :(" >&2
@@ -126,8 +151,10 @@ if [ "$target" = "c_native" ]; then
     fi
 elif [ "$target" = "hbvm_ableos" ]; then
     make_build_dir
+    check_out_dir
     set_target
-    if ! hbc "$build_dir/src/main.hb" --target=unknown-virt-unknown > "$build_dir/target/build/lily.hbf"; then
+    if [ "$out" = "$build_dir/target/lily" ]; then out="$build_dir/target/lily.hbf"; fi
+    if ! hbc "$build_dir/src/main.hb" --target=unknown-virt-unknown > "$out"; then
         echo "compilation failed :(" >&2
         exit 1
     fi

src/lib/alloc.hb

@@ -1,4 +1,4 @@
-.{collections: .{Vec}, target, target_c_native, target_hbvm_ableos} := @use("lib.hb")
+.{collections: .{Vec}, target, target_c_native, target_hbvm_ableos, null_pointer} := @use("lib.hb")
 
 Allocation := struct {
 	ptr: ^void,
@@ -67,7 +67,7 @@ RawAllocator := struct {
 	old_ptr: ^void,
 	size: uint,
 	old_size: uint,
-	$new := fn(): Self return .(@bitcast(0), @bitcast(0), 0, 0)
+	$new := fn(): Self return .(null_pointer(void), null_pointer(void), 0, 0)
 	deinit := fn(self: ^Self): void {
 		if target == target_c_native {
 			target.free(self.ptr)

src/lib/target/hbvm_ableos.hb

@@ -1,4 +1,4 @@
-.{log: .{LogLevel}} := @use("../lib.hb")
+.{log: .{LogLevel}, null_pointer} := @use("../lib.hb")
 
 $PAGE_SIZE := 4096
 $MAX_ALLOC := 0xFF
@@ -27,7 +27,7 @@ malloc := fn(size: uint): ?^void {
 }
 
 free := fn(ptr: ^void, size: uint): void {
-	if size == 0 | ptr == @bitcast(0) return;
+	if size == 0 | ptr == null_pointer(void) return;
 	pages := calculate_pages(size)
 	free_pages(ptr, pages)
 }

src/main.hb

@@ -14,7 +14,7 @@ main := fn(argc: uint, argv: []^void): uint {
 	loop if i == 5 break else {
 		defer i += 1
 		vec.push(i)
-		lily.log.print("pushed to vec\0")
+		lily.log.info("pushed to vec\0")
 	}
 
 	return 0