Add automatic generation of version and build type headers for compilation

This change replaces the static version and build type header file generation
by CMake with dynamic CMake targets to generate the version file whenever a Make
target is executed. Thus, there is no need anymore to reconfigure and rerun
CMake after the repository version or build configuration has changed.

21 files changed, 672 insertions, 99 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cc62a4b..a14e369 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,21 +1,41 @@
 cmake_minimum_required(VERSION 3.10)
 
 # include CMake macros
-set (CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake")
-include(version)
+set(PROJECT_MODULES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
+					  ${PROJECT_MODULES_DIR})
 
 # define root CMake project
 project(xloop
         DESCRIPTION "xloop Linux kernel modules and utility"
         LANGUAGES C)
 
-# define project specific settings
-set(BLK_DEV_XLOOP_MIN_COUNT 8
-               CACHE STRING "Number of xloop devices to pre-create at init time")
-set(XLOOP_MAJOR 120
-   CACHE STRING "Major number for xloop devices")
-set(XLOOP_CTRL_MINOR 15
-        CACHE STRING "Minor number for the xloop-control device")
+# check for system before all other stuff is configured
+if(NOT UNIX OR NOT CMAKE_SYSTEM_NAME MATCHES "Linux")
+    # abort build of the xloop Linux kernel modules on a system other than Linux, eg. FreeBSD
+    message(FATAL_ERROR "Detected non-Linux system: Abort build of the xloop Linux kernel modules and utility")
+endif(NOT UNIX OR NOT CMAKE_SYSTEM_NAME MATCHES "Linux")
+
+# set supported build configurations
+set(CMAKE_CONFIGURATION_TYPES Debug Release)
+
+# set compilation in debug mode as default configuration
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Debug)
+    message(STATUS "Build type is not set. Defaulting to ${CMAKE_BUILD_TYPE} build!")
+endif(NOT CMAKE_BUILD_TYPE)
+
+# include project version and build type related macros
+include(Version)
+include(Build)
+
+# search for required packages
+find_package(Git)
+
+# abort if a required package is not available
+if(NOT GIT_FOUND)
+	message(FATAL_ERROR "No Git found, can't determine xloop project version number!")
+endif(NOT GIT_FOUND)
 
 # set Linux kernel directories
 set(KERNEL_BUILD_DIR "/lib/modules/${CMAKE_SYSTEM_VERSION}/build"
@@ -23,6 +43,14 @@ set(KERNEL_BUILD_DIR "/lib/modules/${CMAKE_SYSTEM_VERSION}/build"
 set(KERNEL_INSTALL_DIR "/lib/modules/${CMAKE_SYSTEM_VERSION}/extra"
     CACHE PATH "Path to install Linux kernel modules")
 
+# set linux kernel modules specific default settings
+set(BLK_DEV_XLOOP_MIN_COUNT 8
+    CACHE STRING "Number of xloop devices to pre-create at init time")
+set(XLOOP_MAJOR 120
+    CACHE STRING "Major number for xloop devices")
+set(XLOOP_CTRL_MINOR 15
+    CACHE STRING "Minor number for the xloop-control device")
+
 # print configured settings
 message(STATUS "Path to Linux kernel modules to compile against is " ${KERNEL_BUILD_DIR})
 message(STATUS "Path to install Linux kernel modules is " ${KERNEL_INSTALL_DIR})
@@ -30,48 +58,77 @@ message(STATUS "Number of xloop devices to pre-create at init time is " ${BLK_DE
 message(STATUS "Major number for xloop devices is " ${XLOOP_MAJOR})
 message(STATUS "Minor number for the xloop-control device is " ${XLOOP_CTRL_MINOR})
 
-# set supported build configurations
-set(CMAKE_CONFIGURATION_TYPES Debug Release)
+# get the Linux kernel version
+get_kernel_version(LINUX_KERNEL_VERSION ${KERNEL_BUILD_DIR})
 
-# set compilation in debug mode as default configuration
-if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE Debug)
-    message(STATUS "Build type is not set. Defaulting to ${CMAKE_BUILD_TYPE} build!")
-endif()
+# set include directories
+set(PROJECT_GEN_DIR ${CMAKE_BINARY_DIR}/generated)
+set(PROJECT_INCLUDE_DIR_PREFIX inc)
+set(PROJECT_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/${PROJECT_INCLUDE_DIR_PREFIX})
+set(PROJECT_INCLUDE_GEN_DIR ${PROJECT_GEN_DIR}/${PROJECT_INCLUDE_DIR_PREFIX})
+include_directories(${PROJECT_INCLUDE_DIR})
 
-# get versions to define project version
-get_kernel_version(LINUX_KERNEL_VERSION ${KERNEL_BUILD_DIR})
-get_repository_version(REPOSITORY_VERSION)
-set(VERSION ${LINUX_KERNEL_VERSION}-${REPOSITORY_VERSION}
-    CACHE STRING "Version of xloop package")
+# generate project version C header file from template
+# exposes xloop-generate-version and xloop-version target
+set(INCLUDE_VERSION_HEADER ${PROJECT_INCLUDE_DIR}/xloop/version.h)
+set(INCLUDE_VERSION_HEADER_TEMPLATE ${PROJECT_INCLUDE_DIR}/xloop/version.h.in)
+set(INCLUDE_VERSION_HEADER_GENERATE ${PROJECT_INCLUDE_GEN_DIR}/xloop/version.h)
+set(INCLUDE_VERSION_HEADER_GENERATE_PREFIX ${PROJECT_INCLUDE_DIR_PREFIX}/xloop)
+gen_project_version(${INCLUDE_VERSION_HEADER} ${INCLUDE_VERSION_HEADER_TEMPLATE} ${INCLUDE_VERSION_HEADER_GENERATE})
+
+# generate project build type C header file from template
+# exposes xloop-generate-build and xloop-build target
+set(INCLUDE_BUILD_HEADER_TEMPLATE ${PROJECT_INCLUDE_DIR}/xloop/build.h.in)
+set(INCLUDE_BUILD_HEADER_GENERATE ${PROJECT_INCLUDE_GEN_DIR}/xloop/build.h)
+gen_build_type(${INCLUDE_BUILD_HEADER_TEMPLATE} ${INCLUDE_BUILD_HEADER_GENERATE})
+
+# enable all error warnings in Debug build configuration
+set(CMAKE_C_FLAGS_DEBUG "-Wall -Wextra -Wpedantic -Wconversion -Wformat -Wformat-security -Werror=format-security")
+set(CMAKE_C_FLAGS_RELEASE "-Wno-error")
+
+# set compilation optimization
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g -Og -DDEBUG")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -DNDEBUG")
 
 # define packaging if Release build is enabled
-if(${CMAKE_BUILD_TYPE} MATCHES Release)
+if(CMAKE_BUILD_TYPE MATCHES "Release")
+    # get version source package or Git repository
+    get_repository_version(REPOSITORY_VERSION ${INCLUDE_VERSION_HEADER} ${CMAKE_BUILD_TYPE})
+
+    # define project version
+    set(REPOSITORY_VERSION_FULL ${REPOSITORY_VERSION}-${LINUX_KERNEL_VERSION})
+
     set(CPACK_GENERATOR "DEB;RPM;TGZ")
-    set(CPACK_SOURCE_GENERATOR "TGZ;ZIP")
     set(CPACK_PACKAGE_NAME ${CMAKE_PROJECT_NAME})
     set(CPACK_MONOLITHIC_INSTALL True)
-    set(CPACK_SOURCE_IGNORE_FILES "/build/;/.git/;.gitignore$;.*~")
-    set(CPACK_PACKAGE_VERSION ${VERSION})
+    set(CPACK_PACKAGE_VERSION ${REPOSITORY_VERSION})
+    set(CPACK_PACKAGE_VERSION_FULL ${REPOSITORY_VERSION_FULL})
     set(CPACK_PACKAGE_SECTION admin)
     set(CPACK_PACKAGE_VENDOR "University of Freiburg")
     set(CPACK_PACKAGE_CONTACT "Christian Rößler <christian.roessler@rz.uni-freiburg.de>")
     set(CPACK_PACKAGE_HOMEPAGE_URL "https://git.openslx.org/openslx-ng/xloop.git/")
     set(CPACK_PACKAGE_CHECKSUM SHA256)
-    set(CPACK_PACKAGE_FILE_NAME ${CPACK_PACKAGE_NAME}_${CPACK_PACKAGE_VERSION}_${CMAKE_SYSTEM_PROCESSOR})
+    set(CPACK_PACKAGE_FILE_NAME ${CPACK_PACKAGE_NAME}_${REPOSITORY_VERSION_FULL}_${CMAKE_SYSTEM_PROCESSOR})
     set(CPACK_SOURCE_PACKAGE_FILE_NAME ${CPACK_PACKAGE_NAME}_${CPACK_PACKAGE_VERSION}_source)
     set(CPACK_STRIP_FILES True)
     set(CPACK_PACKAGE_RELOCATABLE False)
     set(CPACK_SET_DESTDIR True)
     set(CMAKE_INSTALL_PREFIX "/usr")
     set(CPACK_PACKAGING_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX})
+    set(CPACK_RESOURCE_FILE_LICENSE ${CMAKE_CURRENT_SOURCE_DIR}/COPYING)
+    set(CPACK_RESOURCE_FILE_README ${CMAKE_CURRENT_SOURCE_DIR}/README.md)
+
     # set DEB generator specific packaging options
-    set(CPACK_DEBIAN_PACKAGE_DEPENDS "libc-bin")
-    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postinst "depmod -a\nudevadm control --reload-rules\n")
-    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postrm "depmod -a\nudevadm control --reload-rules\n")
-    set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postinst
-                                           ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postrm)
+    set(CPACK_DEBIAN_PACKAGE_DEPENDS "libc6")
+    if(XLOOP_KERNEL_MODULES)
+        file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postinst "depmod -a\nudevadm control --reload-rules\n")
+        file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postrm "depmod -a\nudevadm control --reload-rules\n")
+        set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postinst
+                                               ${CMAKE_CURRENT_BINARY_DIR}/package/deb/postrm)
+    endif(XLOOP_KERNEL_MODULES)
+
     # set RPM generator specific packaging options
+    set(CPACK_RPM_PACKAGE_REQUIRES "glibc")
     set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION "/lib"
                                                       "/lib/modules"
                                                       "/lib/modules/${CMAKE_SYSTEM_VERSION}"
@@ -82,16 +139,35 @@ if(${CMAKE_BUILD_TYPE} MATCHES Release)
                                                       "${CPACK_PACKAGING_INSTALL_PREFIX}/share/bash-completion/completions"
                                                       "${CPACK_PACKAGING_INSTALL_PREFIX}/share/man"
                                                       "${CPACK_PACKAGING_INSTALL_PREFIX}/share/man/man8")
-    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/post "depmod -a\nudevadm control --reload-rules\n")
-    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/postun "depmod -a\nudevadm control --reload-rules\n")
-    set(CPACK_RPM_POST_INSTALL_SCRIPT_FILE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/post)
-    set(CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/postun)
+    if(XLOOP_KERNEL_MODULES)
+        file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/post "depmod -a\nudevadm control --reload-rules\n")
+        file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/postun "depmod -a\nudevadm control --reload-rules\n")
+        set(CPACK_RPM_POST_INSTALL_SCRIPT_FILE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/post)
+        set(CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE ${CMAKE_CURRENT_BINARY_DIR}/package/rpm/postun)
+    endif(XLOOP_KERNEL_MODULES)
+
+    # configure source packaging
+    set(CPACK_SOURCE_GENERATOR "TGZ;ZIP")
+    set(CPACK_SOURCE_INSTALLED_DIRECTORIES "${CMAKE_SOURCE_DIR}" "/"
+                                           "${PROJECT_GEN_DIR}" "/")
+    set(CPACK_SOURCE_IGNORE_FILES "/build/;/.git/;.gitignore$;.*~;version.h.in$")
+
+    # generate install script for CPack to install generated files
+    configure_file(${PROJECT_MODULES_DIR}/InstallVersionFile.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/package/InstallVersionFile.cmake)
+
+    # set CPack install script
+    set(CPACK_INSTALL_SCRIPT ${CMAKE_CURRENT_BINARY_DIR}/package/InstallVersionFile.cmake)
+
     # include CPack functionality
     include(CPack)
-endif()
+
+    # create custom target to build package source
+    add_custom_target(source
+                      COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target package_source
+                      DEPENDS xloop-generate-version
+                      VERBATIM
+                      USES_TERMINAL)
+endif(CMAKE_BUILD_TYPE MATCHES "Release")
 
 # add all xloop related projects from the source code directory
 add_subdirectory(src)
-
-# print version information
-message(STATUS "Configured ${CMAKE_PROJECT_NAME} in version ${VERSION}")
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
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+
+  When we speak of free software, we are referring to freedom, not
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+
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+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
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+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/README.md b/README.md
index d1229c9..efa50de 100644
--- a/README.md
+++ b/README.md
@@ -111,17 +111,17 @@ In the `Release` build configuration, installation packages can be built by call
 make package
 ```
 
-This target creates a Debian installation package (\*.deb) and a compressed archive (\*.tar.gz) containing the built xloop Linux kernel modules and the xlosetup utility executable as well as its man page and bash-completion support.
+This target creates a Debian installation package (\*.deb), a RPM installation package (\*.rpm) and a compressed archive (\*.tar.gz) containing the built xloop Linux kernel modules and the xlosetup utility executable as well as its man page and bash-completion support.
 
 
 ### Sources
-In the `Release` build configuration, sources can be built by calling the make target `package_source`:
+In the `Release` build configuration, sources can be built by calling the make target `source`:
 
 ```shell
-make package_source
+make source
 ```
 
-This target creates compressed archives (\*_sources.tar.gz and \*_sources.zip) containing the source code of this repository for code distribution purposes.
+This target creates compressed archives (\*_source.tar.gz and \*_source.zip) containing the source code of this repository for code distribution purposes.
 
 
 ## Debugging
diff --git a/cmake/Build.cmake b/cmake/Build.cmake
new file mode 100644
index 0000000..bad9755
--- /dev/null
+++ b/cmake/Build.cmake
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de>
+#
+
+macro(gen_build_type BUILD_INPUT_FILE_TEMPLATE BUILD_OUTPUT_FILE)
+    get_filename_component(BUILD_OUTPUT_FILENAME ${BUILD_OUTPUT_FILE} NAME)
+    # command that will trigger a rebuild of build.h every time
+    add_custom_command(OUTPUT regenerate-build-file
+                       COMMAND ${CMAKE_COMMAND} -E sleep 0
+                       COMMENT "Trigger generating ${BUILD_OUTPUT_FILENAME}")
+
+    # call the GenerateBuild.cmake file to generate the build.h file
+    add_custom_command(OUTPUT ${BUILD_OUTPUT_FILE}
+                       COMMAND ${CMAKE_COMMAND} -D BUILD_INPUT_FILE_TEMPLATE=${BUILD_INPUT_FILE_TEMPLATE}
+                                                -D BUILD_OUTPUT_FILE=${BUILD_OUTPUT_FILE}
+                                                -D BUILD_TYPE=${CMAKE_BUILD_TYPE}
+                                                -P ${PROJECT_MODULES_DIR}/GenerateBuild.cmake
+                       COMMENT "Generating ${BUILD_OUTPUT_FILENAME}"
+                       DEPENDS regenerate-build-file)
+    add_custom_target(xloop-generate-build DEPENDS ${BUILD_OUTPUT_FILE})
+
+    # create target to expose project build type
+    add_library(xloop-build INTERFACE)
+    target_include_directories(xloop-build INTERFACE ${PROJECT_INCLUDE_GEN_DIR})
+    add_dependencies(xloop-build xloop-generate-build)
+endmacro(gen_build_type BUILD_INPUT_FILE_TEMPLATE BUILD_OUTPUT_FILE)
diff --git a/cmake/GenerateBuild.cmake b/cmake/GenerateBuild.cmake
new file mode 100644
index 0000000..5af35d2
--- /dev/null
+++ b/cmake/GenerateBuild.cmake
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de>
+#
+
+# set current build type of the project
+set(XLOOP_BUILD ${BUILD_TYPE})
+
+# write dnbd3 build type into a new C source file based on the specified build file template
+configure_file(${BUILD_INPUT_FILE_TEMPLATE} ${BUILD_OUTPUT_FILE})
diff --git a/cmake/GenerateVersion.cmake b/cmake/GenerateVersion.cmake
new file mode 100644
index 0000000..73b0771
--- /dev/null
+++ b/cmake/GenerateVersion.cmake
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de>
+#
+
+# set CMake module path to include version macros
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
+                      ${VERSION_MODULE_PATH})
+
+# include version macros
+include(Version)
+
+# get Git version of Git repository
+get_repository_version(XLOOP_VERSION ${VERSION_INPUT_FILE} ${VERSION_BUILD_TYPE})
+
+# generate version header if header does not exists
+if(NOT EXISTS ${VERSION_INPUT_FILE})
+    # write dnbd3 version into a new C source file based on the specified version template
+    configure_file(${VERSION_INPUT_FILE_TEMPLATE} ${VERSION_OUTPUT_FILE})
+endif(NOT EXISTS ${VERSION_INPUT_FILE})
diff --git a/cmake/InstallVersionFile.cmake.in b/cmake/InstallVersionFile.cmake.in
new file mode 100644
index 0000000..8121c25
--- /dev/null
+++ b/cmake/InstallVersionFile.cmake.in
@@ -0,0 +1,8 @@
+# 
+# AUTOGENERATED: DO NOT EDIT THIS FILE 
+#
+
+if(CPACK_SOURCE_INSTALLED_DIRECTORIES AND EXISTS "@INCLUDE_VERSION_HEADER_GENERATE@")
+    file(INSTALL "@INCLUDE_VERSION_HEADER_GENERATE@"
+         DESTINATION "@INCLUDE_VERSION_HEADER_GENERATE_PREFIX@")
+endif(CPACK_SOURCE_INSTALLED_DIRECTORIES AND EXISTS "@INCLUDE_VERSION_HEADER_GENERATE@")
diff --git a/src/kernel/cmake/kernel.cmake b/cmake/Kernel.cmake
index 811ce86..232c298 100644
--- a/src/kernel/cmake/kernel.cmake
+++ b/cmake/Kernel.cmake
@@ -49,8 +49,9 @@ macro(add_kernel_module MODULE_NAME KERNEL_BUILD_DIR KERNEL_INSTALL_DIR MODULE_M
                        DEPENDS ${BUILD_SOURCE_FILE_PREPARED} ${MODULE_HEADER_FILES_PREPARED} ${MODULE_SOURCE_FILES_PREPARED}
                        VERBATIM)
     add_custom_target(${MODULE_NAME} ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}/${MODULE_NAME}.ko ${ARGV7})
+    # install kernel module
     install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}/${MODULE_NAME}.ko
             DESTINATION ${KERNEL_INSTALL_DIR}
             PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-            COMPONENT main)
+            COMPONENT kernel)
 endmacro(add_kernel_module)
diff --git a/cmake/Version.cmake b/cmake/Version.cmake
new file mode 100644
index 0000000..a061e48
--- /dev/null
+++ b/cmake/Version.cmake
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de>
+#
+
+macro(gen_project_version VERSION_INPUT_FILE VERSION_INPUT_FILE_TEMPLATE VERSION_OUTPUT_FILE)
+    get_filename_component(VERSION_OUTPUT_FILENAME ${VERSION_OUTPUT_FILE} NAME)
+    # command that will trigger a rebuild of version.h every time
+    add_custom_command(OUTPUT regenerate-version-file
+                       COMMAND ${CMAKE_COMMAND} -E sleep 0
+                       COMMENT "Trigger generating ${VERSION_OUTPUT_FILENAME}")
+
+    # call the GenerateVersion.cmake file to generate the version.c file
+    add_custom_command(OUTPUT ${VERSION_OUTPUT_FILE}
+                       COMMAND ${CMAKE_COMMAND} -D VERSION_MODULE_PATH=${PROJECT_MODULES_DIR}
+                                                -D VERSION_INPUT_FILE=${VERSION_INPUT_FILE}
+                                                -D VERSION_INPUT_FILE_TEMPLATE=${VERSION_INPUT_FILE_TEMPLATE}
+                                                -D VERSION_OUTPUT_FILE=${VERSION_OUTPUT_FILE}
+                                                -D VERSION_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+                                                -P ${PROJECT_MODULES_DIR}/GenerateVersion.cmake
+                       COMMENT "Generating ${VERSION_OUTPUT_FILENAME}"
+                       DEPENDS regenerate-version-file)
+    add_custom_target(xloop-generate-version DEPENDS ${VERSION_OUTPUT_FILE})
+
+    # create target to expose project version
+    add_library(xloop-version INTERFACE)
+    target_include_directories(xloop-version INTERFACE ${PROJECT_INCLUDE_GEN_DIR})
+    add_dependencies(xloop-version xloop-generate-version)
+endmacro(gen_project_version VERSION_INPUT_FILE VERSION_INPUT_FILE_TEMPLATE VERSION_OUTPUT_FILE)
+
+# macro to get Linux kernel version from KERNEL_BUILD_DIR string
+macro(get_kernel_version LINUX_KERNEL_VERSION KERNEL_BUILD_DIR)
+    string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" LINUX_KERNEL_VERSION ${KERNEL_BUILD_DIR})
+    if(LINUX_KERNEL_VERSION STREQUAL "")
+        set(LINUX_KERNEL_VERSION "unknown")
+    endif(LINUX_KERNEL_VERSION STREQUAL "")
+endmacro(get_kernel_version LINUX_KERNEL_VERSION KERNEL_BUILD_DIR)
+
+# macro to get Git version information
+macro(get_repository_version REPOSITORY_VERSION VERSION_HEADER_FILE VERSION_BUILD_TYPE)
+    # check if generated version header from source package is available
+    if(EXISTS ${VERSION_HEADER_FILE})
+        # get version information from the generated version header of the source package
+        file(READ ${VERSION_HEADER_FILE} GIT_VERSION)
+        string(REGEX MATCH "\"(([0-9]+:)?[0-9][A-Za-z0-9.+~-]*)\"" GIT_VERSION ${GIT_VERSION})
+        set(GIT_VERSION "${CMAKE_MATCH_1}")
+    else(EXISTS ${VERSION_HEADER_FILE})
+        # get detailed Git version information from Git repository
+        execute_process(COMMAND git describe HEAD
+                        OUTPUT_VARIABLE GIT_VERSION
+                        OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+        # remove the first letter of the version to satisfy packaging rules
+        string(REGEX MATCH "([0-9]+:)?[0-9][A-Za-z0-9.+~-]*" GIT_VERSION ${GIT_VERSION})
+
+        # overwrite version from Git if version is unknown
+        if(GIT_VERSION STREQUAL "")
+            set(GIT_VERSION "unknown")
+        endif(GIT_VERSION STREQUAL "")
+
+        # get status of Git repository
+        execute_process(COMMAND git status --porcelain
+                        OUTPUT_VARIABLE GIT_STATUS
+                        OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+        # check if Git repository is dirty
+        if(NOT GIT_STATUS STREQUAL "")
+            # the Git repository is dirty, thus extend the version information
+            set(GIT_VERSION "${GIT_VERSION}-modified")
+
+            # print a message in Release build configuration to warn about the dirty repository
+            if(${VERSION_BUILD_TYPE} MATCHES "Release")
+                message(WARNING "This xloop Git repository is dirty! Please commit or revert all changes for a ${VERSION_BUILD_TYPE} build!")
+            endif(${VERSION_BUILD_TYPE} MATCHES "Release")
+        endif(NOT GIT_STATUS STREQUAL "")
+    endif(EXISTS ${VERSION_HEADER_FILE})
+
+    # return version to caller
+    set(${REPOSITORY_VERSION} ${GIT_VERSION})
+endmacro(get_repository_version)
diff --git a/cmake/version.cmake b/cmake/version.cmake
deleted file mode 100644
index 07483af..0000000
--- a/cmake/version.cmake
+++ /dev/null
@@ -1,21 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# CMake macros to get version numbers
-# Copyright (C) 2020 Manuel Bentele <development@manuel-bentele.de>
-#
-
-# macro to get Linux kernel version from KERNEL_BUILD_DIR
-macro(get_kernel_version LINUX_KERNEL_VERSION KERNEL_BUILD_DIR)
-    string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" LINUX_KERNEL_VERSION ${KERNEL_BUILD_DIR})
-    if(LINUX_KERNEL_VERSION STREQUAL "")
-        set(LINUX_KERNEL_VERSION "unknown")
-    endif()
-endmacro(get_kernel_version)
-
-# macro to get short hash of latest commit
-macro(get_repository_version REPOSITORY_VERSION)
-    execute_process(COMMAND git rev-parse --short HEAD
-                    OUTPUT_VARIABLE SHORT_HASH_RESULT
-                    OUTPUT_STRIP_TRAILING_WHITESPACE)
-    string(REGEX MATCH "[0-9a-fA-F]+" REPOSITORY_VERSION ${SHORT_HASH_RESULT})
-endmacro(get_repository_version)
diff --git a/inc/xloop/build.h.in b/inc/xloop/build.h.in
new file mode 100644
index 0000000..4a8fbd3
--- /dev/null
+++ b/inc/xloop/build.h.in
@@ -0,0 +1,10 @@
+/* 
+ * AUTOGENERATED: DO NOT EDIT THIS FILE 
+ */
+
+#ifndef BUILD_H_
+#define BUILD_H_
+
+#define XLOOP_BUILD "@XLOOP_BUILD@"
+
+#endif /* BUILD_H_ */
diff --git a/inc/xloop/version.h.in b/inc/xloop/version.h.in
new file mode 100644
index 0000000..99d730d
--- /dev/null
+++ b/inc/xloop/version.h.in
@@ -0,0 +1,10 @@
+/* 
+ * AUTOGENERATED: DO NOT EDIT THIS FILE 
+ */
+
+#ifndef VERSION_H_
+#define VERSION_H_
+
+#define XLOOP_VERSION "@XLOOP_VERSION@"
+
+#endif /* VERSION_H_ */
diff --git a/src/kernel/CMakeLists.txt b/src/kernel/CMakeLists.txt
index dd12c80..2f1446a 100644
--- a/src/kernel/CMakeLists.txt
+++ b/src/kernel/CMakeLists.txt
@@ -3,20 +3,26 @@ cmake_minimum_required(VERSION 3.10)
 # set the project name
 project(xloop-kernel)
 
-set (CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake")
-include(kernel)
+# include macros to define Linux kernel build targets
+include(Kernel)
 
 # set C flags for a Linux kernel module
-set(KERNEL_C_FLAGS "-DCONFIG_BLK_DEV_XLOOP_MIN_COUNT=${BLK_DEV_XLOOP_MIN_COUNT} -DXLOOP_MAJOR=${XLOOP_MAJOR} -DXLOOP_CTRL_MINOR=${XLOOP_CTRL_MINOR} -DVERSION=${VERSION}"
-      CACHE STRING "C flags to be used for building the kernel module")
+set(KERNEL_C_FLAGS "-DCONFIG_BLK_DEV_XLOOP_MIN_COUNT=${BLK_DEV_XLOOP_MIN_COUNT} -DXLOOP_MAJOR=${XLOOP_MAJOR} -DXLOOP_CTRL_MINOR=${XLOOP_CTRL_MINOR} -I ${PROJECT_INCLUDE_GEN_DIR}"
+    CACHE STRING "C flags to be used for building the kernel module")
 # set C flags for the debug mode of a Linux kernel module
 set(KERNEL_C_FLAGS_DEBUG "-g -DDEBUG"
-            CACHE STRING "Additional C flags to be used for building the kernel module in debug mode")
+    CACHE STRING "Additional C flags to be used for building the kernel module in debug mode")
+
+# append include directories to the C flags
+get_property(KERNEL_INCLUDE_DIRS DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
+foreach(KERNEL_INCLUDE_DIR ${KERNEL_INCLUDE_DIRS})
+    set(KERNEL_C_FLAGS "${KERNEL_C_FLAGS} -I ${KERNEL_INCLUDE_DIR}")
+endforeach(KERNEL_INCLUDE_DIR ${KERNEL_INCLUDE_DIRS})
 
 # append debug C flags if debug mode is enabled
-if(CMAKE_BUILD_TYPE MATCHES Debug)
+if(CMAKE_BUILD_TYPE MATCHES "Debug")
     set(KERNEL_C_FLAGS "${KERNEL_C_FLAGS} ${KERNEL_C_FLAGS_DEBUG}")
-endif(CMAKE_BUILD_TYPE MATCHES Debug)
+endif(CMAKE_BUILD_TYPE MATCHES "Debug")
 
 # xloop main Linux kernel module
 set(KERNEL_MODULE_XLOOP_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/xloop_file_fmt.c
@@ -30,6 +36,8 @@ add_kernel_module(xloop "${KERNEL_BUILD_DIR}"
                         "${KERNEL_MODULE_XLOOP_SOURCE_FILES}"
                         "${KERNEL_MODULE_XLOOP_HEADER_FILES}"
                         ${CMAKE_CURRENT_SOURCE_DIR}/Kbuild)
+# add dependency to generate project version header before xloop.ko is built
+add_dependencies(xloop xloop-generate-version)
 
 # xloop_file_fmt_raw Linux kernel module
 set(KERNEL_MODULE_XLOOP_RAW_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/xloop_file_fmt_raw.c)
@@ -43,6 +51,8 @@ add_kernel_module(xloop_file_fmt_raw "${KERNEL_BUILD_DIR}"
                                      "${KERNEL_MODULE_XLOOP_RAW_HEADER_FILES}"
                                      ${CMAKE_CURRENT_SOURCE_DIR}/Kbuild
                                      xloop)
+# add dependency to generate project version header before xloop_file_fmt_raw.ko is built
+add_dependencies(xloop_file_fmt_raw xloop-generate-version)
 
 # xloop_file_fmt_qcow Linux kernel module
 set(KERNEL_MODULE_XLOOP_QCOW_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/xloop_file_fmt_qcow_cache.c
@@ -61,13 +71,15 @@ add_kernel_module(xloop_file_fmt_qcow "${KERNEL_BUILD_DIR}"
                                       "${KERNEL_MODULE_XLOOP_QCOW_HEADER_FILES}"
                                       ${CMAKE_CURRENT_SOURCE_DIR}/Kbuild
                                       xloop)
+# add dependency to generate project version header before xloop_file_fmt_qcow.ko is built
+add_dependencies(xloop_file_fmt_qcow xloop-generate-version)
 
-if(${CMAKE_BUILD_TYPE} MATCHES Debug)
+if(CMAKE_BUILD_TYPE MATCHES "Debug")
     add_subdirectory(tests)
-endif()
+endif(CMAKE_BUILD_TYPE MATCHES "Debug")
 
 # install udev rules for xloop devices exposed by the xloop kernel module
 install(PROGRAMS ${CMAKE_CURRENT_SOURCE_DIR}/udev/50-xloop.rules
         DESTINATION /lib/udev/rules.d
         PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-        COMPONENT main)
+        COMPONENT kernel)
diff --git a/src/kernel/xloop_file_fmt_qcow_main.c b/src/kernel/xloop_file_fmt_qcow_main.c
index 38fe1af..dfde76d 100644
--- a/src/kernel/xloop_file_fmt_qcow_main.c
+++ b/src/kernel/xloop_file_fmt_qcow_main.c
@@ -27,6 +27,8 @@
 #include <linux/zstd.h>
 #endif
 
+#include <xloop/version.h>
+
 #include "xloop_file_fmt.h"
 #include "xloop_file_fmt_qcow_main.h"
 #include "xloop_file_fmt_qcow_cache.h"
@@ -1280,4 +1282,4 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Manuel Bentele <development@manuel-bentele.de>");
 MODULE_DESCRIPTION("xloop device QCOW file format driver");
 MODULE_SOFTDEP("pre: xloop");
-MODULE_VERSION(__stringify(VERSION));
+MODULE_VERSION(XLOOP_VERSION);
diff --git a/src/kernel/xloop_file_fmt_raw.c b/src/kernel/xloop_file_fmt_raw.c
index 76ab39e..12914e8 100644
--- a/src/kernel/xloop_file_fmt_raw.c
+++ b/src/kernel/xloop_file_fmt_raw.c
@@ -23,6 +23,8 @@
 #include <linux/uio.h>
 #include <linux/version.h>
 
+#include <xloop/version.h>
+
 #include "xloop_file_fmt.h"
 
 static inline loff_t __raw_file_fmt_rq_get_pos(struct xloop_file_fmt *xlo_fmt,
@@ -473,4 +475,4 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Manuel Bentele <development@manuel-bentele.de>");
 MODULE_DESCRIPTION("xloop device RAW file format driver");
 MODULE_SOFTDEP("pre: xloop");
-MODULE_VERSION(__stringify(VERSION));
+MODULE_VERSION(XLOOP_VERSION);
diff --git a/src/kernel/xloop_main.c b/src/kernel/xloop_main.c
index a3e20a6..300554f 100644
--- a/src/kernel/xloop_main.c
+++ b/src/kernel/xloop_main.c
@@ -88,6 +88,8 @@
 #include <linux/debugfs.h>
 #endif
 
+#include <xloop/version.h>
+
 #include "xloop_file_fmt.h"
 #include "xloop_main.h"
 
@@ -1719,7 +1721,7 @@ module_param(max_part, int, 0444);
 MODULE_PARM_DESC(max_part, "Maximum number of partitions per xloop device");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Manuel Bentele <development@manuel-bentele.de>");
-MODULE_VERSION(__stringify(VERSION));
+MODULE_VERSION(XLOOP_VERSION);
 MODULE_ALIAS_BLOCKDEV_MAJOR(XLOOP_MAJOR);
 
 int xloop_register_transfer(struct xloop_func_table *funcs)
@@ -2189,7 +2191,7 @@ static int __init xloop_init(void)
 		xloop_add(&xlo, i);
 	mutex_unlock(&xloop_ctl_mutex);
 
-	pr_info("module in version %s loaded\n", __stringify(VERSION));
+	pr_info("module in version %s loaded\n", XLOOP_VERSION);
 	return 0;
 
 misc_out:
diff --git a/src/utils/CMakeLists.txt b/src/utils/CMakeLists.txt
index cfc5548..f3ea912 100644
--- a/src/utils/CMakeLists.txt
+++ b/src/utils/CMakeLists.txt
@@ -4,15 +4,11 @@ cmake_minimum_required(VERSION 3.10)
 project(xloop-utils)
 
 # include global headers
-include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
-
-# prepare date for configuring config.h
-string(TIMESTAMP DATE "%d-%b-%Y")
+include_directories(${PROJECT_INCLUDE_GEN_DIR})
 
 # configure configuration config.h and add it to each source file
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
-add_compile_options(-include ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+add_compile_options(-include ${CMAKE_CURRENT_SOURCE_DIR}/config.h)
 
 # add xloop specific compile options
 add_definitions(-DCONFIG_BLK_DEV_XLOOP_MIN_COUNT=${BLK_DEV_XLOOP_MIN_COUNT} -DXLOOP_MAJOR=${XLOOP_MAJOR})
diff --git a/src/utils/config.h.in b/src/utils/config.h
index 40b8d34..781ddc7 100644
--- a/src/utils/config.h.in
+++ b/src/utils/config.h
@@ -1,6 +1,8 @@
 /* config.h.  Generated from config.h.in by configure.  */
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
+#include <xloop/version.h>
+
 /* Define if building universal (internal helper macro) */
 /* #undef AC_APPLE_UNIVERSAL_BUILD */
 
@@ -693,20 +695,17 @@
 /* Define to 1 if you have the `__secure_getenv' function. */
 /* #undef HAVE___SECURE_GETENV */
 
-/* libblkid date string */
-#define LIBBLKID_DATE "@DATE@"
-
 /* libblkid version string */
-#define LIBBLKID_VERSION "@VERSION@"
+#define LIBBLKID_VERSION XLOOP_VERSION
 
 /* libfdisk version string */
-#define LIBFDISK_VERSION "@VERSION@"
+#define LIBFDISK_VERSION XLOOP_VERSION
 
 /* libmount version string */
-#define LIBMOUNT_VERSION "@VERSION@"
+#define LIBMOUNT_VERSION XLOOP_VERSION
 
 /* libsmartcols version string */
-#define LIBSMARTCOLS_VERSION "@VERSION@"
+#define LIBSMARTCOLS_VERSION XLOOP_VERSION
 
 /* Should login chown /dev/vcsN? */
 /* #undef LOGIN_CHOWN_VCS */
@@ -736,7 +735,7 @@
 #define PACKAGE_NAME "util-linux"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "util-linux @VERSION@"
+#define PACKAGE_STRING ("util-linux " XLOOP_VERSION)
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "util-linux"
@@ -745,7 +744,7 @@
 #define PACKAGE_URL "http://www.kernel.org/pub/linux/utils/util-linux/"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "@VERSION@"
+#define PACKAGE_VERSION XLOOP_VERSION
 
 /* Should pg ring the bell on invalid keys? */
 #define PG_BELL 1
@@ -848,7 +847,7 @@
 /* #undef USE_VENDORDIR */
 
 /* Version number of package */
-#define VERSION "@VERSION@"
+#define VERSION XLOOP_VERSION
 
 /* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
    significant byte first (like Motorola and SPARC, unlike Intel). */
diff --git a/src/utils/lib/CMakeLists.txt b/src/utils/lib/CMakeLists.txt
index e5fa459..22eafb3 100644
--- a/src/utils/lib/CMakeLists.txt
+++ b/src/utils/lib/CMakeLists.txt
@@ -42,3 +42,4 @@ add_library(libcommon STATIC ${CMAKE_CURRENT_SOURCE_DIR}/blkdev.c
                              ${CMAKE_CURRENT_SOURCE_DIR}/timer.c
                              ${CMAKE_CURRENT_SOURCE_DIR}/timeutils.c
                              ${CMAKE_CURRENT_SOURCE_DIR}/ttyutils.c)
+target_link_libraries(libcommon xloop-version)
diff --git a/src/utils/libsmartcols/CMakeLists.txt b/src/utils/libsmartcols/CMakeLists.txt
index c8deb72..dccb5e2 100644
--- a/src/utils/libsmartcols/CMakeLists.txt
+++ b/src/utils/libsmartcols/CMakeLists.txt
@@ -18,5 +18,5 @@ add_library(libsmartcols STATIC ${CMAKE_CURRENT_SOURCE_DIR}/src/buffer.c
                                 ${CMAKE_CURRENT_SOURCE_DIR}/src/table.c
                                 ${CMAKE_CURRENT_SOURCE_DIR}/src/version.c
                                 ${CMAKE_CURRENT_SOURCE_DIR}/src/walk.c)
-target_include_directories(libsmartcols PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_SOURCE_DIR}/../lib)
-target_link_libraries(libsmartcols LINK_PUBLIC libcommon)
+target_include_directories(libsmartcols PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src)
+target_link_libraries(libsmartcols LINK_PUBLIC libcommon xloop-version)
diff --git a/src/utils/sys-utils/CMakeLists.txt b/src/utils/sys-utils/CMakeLists.txt
index 01295d9..e05b5cf 100644
--- a/src/utils/sys-utils/CMakeLists.txt
+++ b/src/utils/sys-utils/CMakeLists.txt
@@ -5,8 +5,7 @@ project(xloop-utils-sys-utils)
 
 # add xlosetup executable
 add_executable(xlosetup ${CMAKE_CURRENT_SOURCE_DIR}/xlosetup.c)
-target_link_libraries(xlosetup LINK_PUBLIC libcommon libsmartcols)
-target_include_directories(xlosetup PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/../lib ${CMAKE_CURRENT_SOURCE_DIR}/../libsmartcols)
+target_link_libraries(xlosetup libcommon libsmartcols xloop-version)
 install(TARGETS xlosetup DESTINATION bin
         COMPONENT main)