From fc6756b1fb33e265db0cdf0daf94141471232998 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Mon, 10 Dec 2018 23:45:53 +0100
Subject: [PATCH] Add doxygen to build system

---
 CMakeLists.txt           |  1 +
 doxygen/CMakeLists.txt   | 10 ++++++++++
 doxygen/Doxyconfig       |  4 ++--
 doxygen/build-doxygen.sh | 20 ++++++++++++++++++++
 4 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 doxygen/CMakeLists.txt
 create mode 100755 doxygen/build-doxygen.sh

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed34bc9..c087a1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,7 @@ pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
 pkg_check_modules(CAIRO REQUIRED cairo)
 
 add_subdirectory(glade)
+add_subdirectory(doxygen)
 
 include_directories(${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS})
 link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
diff --git a/doxygen/CMakeLists.txt b/doxygen/CMakeLists.txt
new file mode 100644
index 0000000..a478f82
--- /dev/null
+++ b/doxygen/CMakeLists.txt
@@ -0,0 +1,10 @@
+find_package(Doxygen)
+if (DOXYGEN_FOUND)
+ 	add_custom_target(doxygen
+		COMMAND ./build-doxygen.sh "${PROJECT_BINARY_DIR}"
+		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+		COMMENT "Generating documentation with Doxygen")
+		
+else (DOXYGEN_FOUND)
+  message("Doxygen need to be installed to generate the doxygen documentation")
+endif (DOXYGEN_FOUND)
diff --git a/doxygen/Doxyconfig b/doxygen/Doxyconfig
index 28ecff4..34028a7 100644
--- a/doxygen/Doxyconfig
+++ b/doxygen/Doxyconfig
@@ -38,7 +38,7 @@ PROJECT_NAME           = GDS-Render
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 
+PROJECT_NUMBER         = $(PROJECT_NUMBER)
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -58,7 +58,7 @@ PROJECT_LOGO           = ../icon/gds-render.svg
 # 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       = $(OUTPUT_DIRECTORY)
 
 # 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/doxygen/build-doxygen.sh b/doxygen/build-doxygen.sh
new file mode 100755
index 0000000..04cd970
--- /dev/null
+++ b/doxygen/build-doxygen.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+  DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
+  SOURCE="$(readlink "$SOURCE")"
+  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+done
+DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
+cd "$DIR"
+
+export PROJECT_NUMBER=`git describe --tags`
+
+if [ $# != 1 ]; then
+	export OUTPUT_DIRECTORY="./output"
+else
+	export OUTPUT_DIRECTORY="$1"
+fi
+
+doxygen Doxyconfig