diff --git a/build.sh b/build.sh
index 91049e3..74a9df5 100755
--- a/build.sh
+++ b/build.sh
@@ -363,8 +363,8 @@ build_dev() {
 # ═══════════════════════════════════════════════════════════════════════════════
 build_release_linux() {
     header "Release: Linux x86_64"
-    local bd="$SCRIPT_DIR/build/linux"
-    local out="$SCRIPT_DIR/release/linux"
+    local bd="${DRAGONX_BUILD_ROOT:-$SCRIPT_DIR/build}/linux"
+    local out="${DRAGONX_RELEASE_ROOT:-$SCRIPT_DIR/release}/linux"
 
     if $CLEAN; then
         info "Cleaning $bd ..."; rm -rf "$bd"
@@ -577,8 +577,8 @@ APPRUN
 # ═══════════════════════════════════════════════════════════════════════════════
 build_release_win() {
     header "Release: Windows x86_64 (cross-compile)"
-    local bd="$SCRIPT_DIR/build/windows"
-    local out="$SCRIPT_DIR/release/windows"
+    local bd="${DRAGONX_BUILD_ROOT:-$SCRIPT_DIR/build}/windows"
+    local out="${DRAGONX_RELEASE_ROOT:-$SCRIPT_DIR/release}/windows"
 
     if $CLEAN; then
         info "Cleaning $bd ..."; rm -rf "$bd"
@@ -1031,8 +1031,8 @@ build_release_mac() {
     fi
 
     header "Release: macOS ($MAC_ARCH$(${IS_CROSS} && echo ' — cross-compile'))"
-    local bd="$SCRIPT_DIR/build/mac"
-    local out="$SCRIPT_DIR/release/mac"
+    local bd="${DRAGONX_BUILD_ROOT:-$SCRIPT_DIR/build}/mac"
+    local out="${DRAGONX_RELEASE_ROOT:-$SCRIPT_DIR/release}/mac"
 
     if $CLEAN; then
         info "Cleaning $bd ..."; rm -rf "$bd"