diff --git a/CMakeLists.txt b/CMakeLists.txt
index f24c10b2..946e9bdf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -367,7 +367,13 @@ ExternalProject_Add(${RUBY_PRJ}
   SOURCE_DIR ${RUBY_SOURCE_DIR}
   BUILD_IN_SOURCE true
   CONFIGURE_COMMAND ""
-  BUILD_COMMAND ruby -r${CMAKE_CURRENT_SOURCE_DIR}/lib/tebako -e "Tebako::Cli.start(['patch', 'pass1', '--ostype=${OSTYPE_TXT}', '--ruby-source-dir=${RUBY_SOURCE_DIR}', '--fs-mount-point=${FS_MOUNT_POINT}', '--data-src-dir=${DATA_SRC_DIR}', '--ruby-ver=${RUBY_VER}'])"
+  BUILD_COMMAND "tebako patch pass1 \
+                                  --ostype=${OSTYPE_TXT} \
+                                  --ruby-source-dir=${RUBY_SOURCE_DIR} \
+                                  --fs-mount-point=${FS_MOUNT_POINT} \
+                                  --data-src-dir=${DATA_SRC_DIR} \
+                                  --ruby-ver=${RUBY_VER}"
+
   # Make it for MacOS otherwise LDFLAGS are invalid
   # COMMAND ${CMAKE_COMMAND} -E make_directory ${DEPS_LIB_DIR}
   COMMAND ${GNU_BASH} -c "${RUBY_SOURCE_DIR}/configure  ${OPENSSL_RUBY_OPTION} ${LIBYAML_RUBY_OPTION} \
@@ -381,7 +387,13 @@ ExternalProject_Add(${RUBY_PRJ}
                                                         --prefix=${DATA_SRC_DIR}              \
                                                         ${C_FLAGS_DEST}=\"${RUBY_C_FLAGS}\"   \
                                                         LDFLAGS=\"${RUBY_L_FLAGS}\""
-  COMMAND   ruby -r${CMAKE_CURRENT_SOURCE_DIR}/lib/tebako -e "Tebako::Cli.start(['patch', 'pass2', '--ostype=${OSTYPE_TXT}', '--ruby-source-dir=${RUBY_SOURCE_DIR}', '--deps-lib-dir=${DEPS_LIB_DIR}', '--data-src-dir=${DATA_SRC_DIR}', '--ruby-stash-dir=${RUBY_STASH_DIR}', '--ruby-ver=${RUBY_VER}'])"
+  COMMAND   "tebako patch pass2 \
+                                --ostype=${OSTYPE_TXT} \
+                                --ruby-source-dir=${RUBY_SOURCE_DIR} \
+                                --deps-lib-dir=${DEPS_LIB_DIR} \
+                                --data-src-dir=${DATA_SRC_DIR} \
+                                --ruby-stash-dir=${RUBY_STASH_DIR} \
+                                --ruby-ver=${RUBY_VER}"
   INSTALL_COMMAND  ""
 )
 
diff --git a/lib/tebako.rb b/lib/tebako.rb
index 3278ae79..2451f167 100644
--- a/lib/tebako.rb
+++ b/lib/tebako.rb
@@ -32,3 +32,4 @@ module Tebako
 
 require_relative "tebako/version"
 require_relative "tebako/error"
+require_relative "tebako/cli"