diff --git a/Makefile.template b/Makefile.template
index b26aee38018..5608f3e9ce9 100644
--- a/Makefile.template
+++ b/Makefile.template
@@ -4,7 +4,7 @@ BUILD_TYPE?=Debug
 CROSS_BUILD?=0
 HOST_OS?=linux
 TARGET_OS?=linux
-PARALLEL_BUILD?=1
+PARALLEL_BUILD?=1 # TODO Rename to `ALL_PROCESSOR_BUILD` or remove this
 COVERAGE_BUILD?=0
 BENCHMARK_ACL_BUILD?=0
 OPTIONS?=
@@ -139,7 +139,7 @@ endif
 	touch $(TIMESTAMP_CONFIGURE)
 
 build_internal: $(BUILD_FOLDER)
-	NNFW_WORKSPACE="$(WORKSPACE)" NPROCS="$(NPROCS)" PARALLEL_BUILD="1" ./nnfw build
+	NNFW_WORKSPACE="$(WORKSPACE)" NPROCS="$(NPROCS)" PARALLEL_BUILD="$(PARALLEL_BUILD)" ./nnfw build
 	rm -rf $(BUILD_ALIAS)
 	ln -s $(BUILD_FOLDER) $(BUILD_ALIAS)
 	touch $(TIMESTAMP_BUILD)
diff --git a/infra/nnfw/cmake/packages/ARMComputeConfig.cmake b/infra/nnfw/cmake/packages/ARMComputeConfig.cmake
index 4ee0351c6e9..67f6ef8a2da 100644
--- a/infra/nnfw/cmake/packages/ARMComputeConfig.cmake
+++ b/infra/nnfw/cmake/packages/ARMComputeConfig.cmake
@@ -136,8 +136,14 @@ function(_ARMCompute_Build ARMCompute_INSTALL_PREFIX)
   list(APPEND SCONS_OPTIONS "examples=0")
   list(APPEND SCONS_OPTIONS "Werror=0")
   list(APPEND SCONS_OPTIONS "os=${TARGET_OS}")
-  include(ProcessorCount)
-  ProcessorCount(N)
+
+  if(DEFINED ACL_BUILD_THREADS)
+    set(N ${ACL_BUILD_THREADS})
+  else(DEFINED ACL_BUILD_THREADS)
+    include(ProcessorCount)
+    ProcessorCount(N)
+  endif(DEFINED ACL_BUILD_THREADS)
+
   if((NOT N EQUAL 0) AND BUILD_EXT_MULTITHREAD)
     list(APPEND SCONS_OPTIONS -j${N})
   endif()
diff --git a/infra/nnfw/command/build b/infra/nnfw/command/build
index 8e59f66f2fe..82b8374e363 100644
--- a/infra/nnfw/command/build
+++ b/infra/nnfw/command/build
@@ -2,6 +2,8 @@
 
 import "build.configuration"
 
+set -x
+
 if [[ ! -d "${BUILD_PATH}" ]]; then
   echo "[ERROR] '${BUILD_PATH}' does not exist. Please run 'configure' first"
   exit 255