diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea4c1fb..395e47c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -94,7 +94,8 @@ zadd_executable(
   #
   LINK_DIRECTORIES
   #
-  appdep/libs/libixwebsocket/amd64/)
+  appdep/libs/libixwebsocket/${ARCH}/
+  appdep/libs/libhpdf/${ARCH}/)
 
 zadd_executable(
   TARGET
@@ -121,4 +122,4 @@ zadd_executable(
   hpdf
   z
   LINK_DIRECTORIES
-  appdep/libs/libhpdf/amd64/)
+  appdep/libs/libhpdf/${ARCH}/)
diff --git a/appdep/libs/libhpdf/aarch64/libhpdf.a b/appdep/libs/libhpdf/aarch64/libhpdf.a
new file mode 100644
index 0000000..52dda0a
Binary files /dev/null and b/appdep/libs/libhpdf/aarch64/libhpdf.a differ
diff --git a/build.sh b/build.sh
index e7e8467..54c1570 100755
--- a/build.sh
+++ b/build.sh
@@ -8,7 +8,8 @@
 # PROJECT_TYPE_PIPE_DISINFECTION
 # PROJECT_TYPE_DRAW_BAR_BOX
 #
-mkdir -p build
+mkdir -p build && rm -rf build && mkdir -p build
+
 cd build
 cmake .. \
     -DCMAKE_C_COMPILER='aarch64-linux-gnu-gcc' \