From 81b5a67f35390fc6682cbd35f7bb2010cc888bde Mon Sep 17 00:00:00 2001
From: Stanislav Angelovic <stanislav.angelovic@siemens.com>
Date: Mon, 13 May 2019 19:21:23 +0200
Subject: [PATCH] Use shallow clone for libsystemd external project

---
 CMakeLists.txt                        |  2 +-
 cmake/LibsystemdExternalProject.cmake | 13 +++++++------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 51bf735..7daeef3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 # PROJECT INFORMATION
 #-------------------------------
 
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.6)
 
 project(sdbus-c++ VERSION 0.6.1 LANGUAGES C CXX)
 
diff --git a/cmake/LibsystemdExternalProject.cmake b/cmake/LibsystemdExternalProject.cmake
index 5a0ce16..42f7404 100644
--- a/cmake/LibsystemdExternalProject.cmake
+++ b/cmake/LibsystemdExternalProject.cmake
@@ -32,14 +32,15 @@ endif()
 include(ExternalProject)
 ExternalProject_Add(LibsystemdBuildProject
                     PREFIX libsystemd-v${LIBSYSTEMD_VERSION}
-                    GIT_REPOSITORY https://github.com/systemd/systemd.git
-                    GIT_TAG        v${LIBSYSTEMD_VERSION}
-                    UPDATE_COMMAND ""
+                    GIT_REPOSITORY    https://github.com/systemd/systemd.git
+                    GIT_TAG           v${LIBSYSTEMD_VERSION}
+                    GIT_SHALLOW       1
+                    UPDATE_COMMAND    ""
                     CONFIGURE_COMMAND ${CMAKE_COMMAND} -E remove <BINARY_DIR>/*
                               COMMAND ${MESON} --buildtype=${LIBSYSTEMD_BUILD_TYPE} -Dstatic-libsystemd=pic <SOURCE_DIR> <BINARY_DIR>
-                    BUILD_COMMAND ${BUILD_VERSION_H}
-                          COMMAND ${NINJA} -C <BINARY_DIR> libsystemd.a
-                    INSTALL_COMMAND ""
+                    BUILD_COMMAND     ${BUILD_VERSION_H}
+                          COMMAND     ${NINJA} -C <BINARY_DIR> libsystemd.a
+                    INSTALL_COMMAND   ""
                     LOG_DOWNLOAD 1 LOG_UPDATE 1 LOG_CONFIGURE 1 LOG_BUILD 1)
 
 ExternalProject_Get_property(LibsystemdBuildProject SOURCE_DIR)