Revert old doxygen config

Makefile

@@ -37,7 +37,7 @@ clean:
 	cd $(EXAMPLES_LOCATION) && $(MAKE) clean
 	cd $(UWSC_LOCATION) && $(MAKE) clean
 	cd $(TESTS_LOCATION) && $(MAKE) clean
-	rm -rf doc/API.md doc/html
+	rm -rf doc/html
 
 examples:
 	cd $(EXAMPLES_LOCATION) && $(MAKE) $*
@@ -53,7 +53,4 @@ check:
 	cd $(TESTS_LOCATION) && $(MAKE)
 
 doxygen:
-	echo "# Ulfius API Documentation" > doc/API.md
-	echo "" >> doc/API.md
-	tail -n +$(shell grep -n "## Header file" API.md | cut -f1 -d:) API.md >> doc/API.md
 	doxygen doc/doxygen.cfg

doc/doxygen.cfg

@@ -790,7 +790,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = README.md ./doc/API.md INSTALL.md ./src/ ./include/
+INPUT                  = README.md API.md INSTALL.md ./src/ ./include/
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -941,7 +941,7 @@ FILTER_SOURCE_PATTERNS =
 # (index.html). This can be useful if you have a project on for instance GitHub
 # and want to reuse the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE = ./doc/API.md
+USE_MDFILE_AS_MAINPAGE = API.md
 
 #---------------------------------------------------------------------------
 # Configuration options related to source browsing