From 88ef66333439c68264e7065b715252e8c970a116 Mon Sep 17 00:00:00 2001
From: Dirk Ziegelmeier <dziegelmeier@de.pepperl-fuchs.com>
Date: Tue, 3 Jul 2018 12:54:17 +0200
Subject: [PATCH] Add CMakeLists.txt to generate source distribution file

---
 .gitignore                         |  1 +
 CMakeLists.txt                     | 19 +++++++++++++++++++
 doc/doxygen/lwip.Doxyfile.cmake.in |  2 +-
 src/Filelists.cmake                |  4 +++-
 4 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 CMakeLists.txt

diff --git a/.gitignore b/.gitignore
index cb0ed534..9dda3408 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 /test/fuzz/output
 /test/fuzz/lwip_fuzz
 /test/fuzz/.depend
+/build
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..2f1eaf08
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.7)
+
+project(lwIP)
+
+set(LWIP_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+include(src/Filelists.cmake)
+
+# Package generation
+set(CPACK_SOURCE_GENERATOR "ZIP")
+set(CPACK_SOURCE_PACKAGE_DESCRIPTION_SUMMARY "lwIP lightweight IP stack")
+set(CPACK_PACKAGE_VERSION_MAJOR "${LWIP_VERSION_MAJOR}")
+set(CPACK_PACKAGE_VERSION_MINOR "${LWIP_VERSION_MINOR}")
+set(CPACK_PACKAGE_VERSION_PATCH "${LWIP_VERSION_REVISION}")
+set(CPACK_SOURCE_IGNORE_FILES "/build/;${CPACK_SOURCE_IGNORE_FILES};.git")
+include(CPack)
+
+# Target for package generation
+add_custom_target(dist COMMAND ${CMAKE_MAKE_PROGRAM} package_source)
+add_dependencies(dist lwipdocs)
diff --git a/doc/doxygen/lwip.Doxyfile.cmake.in b/doc/doxygen/lwip.Doxyfile.cmake.in
index 659decb7..063c2887 100644
--- a/doc/doxygen/lwip.Doxyfile.cmake.in
+++ b/doc/doxygen/lwip.Doxyfile.cmake.in
@@ -58,7 +58,7 @@ PROJECT_LOGO           =
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = output
+OUTPUT_DIRECTORY       = "${DOXYGEN_OUTPUT_DIR}"
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
diff --git a/src/Filelists.cmake b/src/Filelists.cmake
index 19f2648b..98de8fbe 100644
--- a/src/Filelists.cmake
+++ b/src/Filelists.cmake
@@ -236,6 +236,8 @@ set(lwipallapps_SRCS
 configure_file(${LWIP_DIR}/src/include/lwip/init.h.cmake.in ${LWIP_DIR}/src/include/lwip/init.h)
 
 # Documentation
+set(DOXYGEN_DIR ${LWIP_DIR}/doc/doxygen)
+set(DOXYGEN_OUTPUT_DIR output)
 set(DOXYGEN_IN  ${LWIP_DIR}/doc/doxygen/lwip.Doxyfile.cmake.in)
 set(DOXYGEN_OUT ${LWIP_DIR}/doc/doxygen/lwip.Doxyfile)
 configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT})
@@ -246,7 +248,7 @@ if (DOXYGEN_FOUND)
     # note the option ALL which allows to build the docs together with the application
     add_custom_target(lwipdocs EXCLUDE_FROM_ALL
         COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
-        WORKING_DIRECTORY ${LWIP_DIR}/doc/doxygen
+        WORKING_DIRECTORY ${DOXYGEN_DIR}
         COMMENT "Generating API documentation with Doxygen"
         VERBATIM)
 else (DOXYGEN_FOUND)