Include the whole src directory in apidoc and make source files browsable

But still only scan header files as Doxygen can't figure out how they
are related to source files (at least not for class methods).

Doxyfile.in

@@ -557,7 +557,7 @@ SHOW_USED_FILES        = NO
 # This will remove the Files entry from the Quick Index and from the
 # Folder Tree View (if specified). The default is YES.
 
-SHOW_FILES             = NO
+SHOW_FILES             = YES
 
 # Set the SHOW_NAMESPACES tag to NO to disable the generation of the
 # Namespaces page.
@@ -629,7 +629,7 @@ WARN_IF_DOC_ERROR      = YES
 # wrong or incomplete parameter documentation, but not about the absence of
 # documentation.
 
-WARN_NO_PARAMDOC       = NO
+WARN_NO_PARAMDOC       = YES
 
 # The WARN_FORMAT tag determines the format of the warning messages that
 # doxygen can produce. The string should contain the $file, $line, and $text
@@ -655,17 +655,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = @SRC_DIR@/src/libstrongswan \
-                         @SRC_DIR@/src/libhydra \
-                         @SRC_DIR@/src/libcharon \
-                         @SRC_DIR@/src/libipsec \
-                         @SRC_DIR@/src/libsimaka \
-                         @SRC_DIR@/src/libtls \
-                         @SRC_DIR@/src/libradius \
-                         @SRC_DIR@/src/libtnccs \
-                         @SRC_DIR@/src/libtncif \
-                         @SRC_DIR@/src/libfast \
-                         @SRC_DIR@/src/manager
+INPUT                  = @SRC_DIR@/src/
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
@@ -697,13 +687,13 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                =
+EXCLUDE                = @SRC_DIR@/src/include
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded
 # from the input.
 
-EXCLUDE_SYMLINKS       = NO
+EXCLUDE_SYMLINKS       = YES
 
 # If the value of the INPUT tag contains directories, you can use the
 # EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
@@ -792,7 +782,7 @@ FILTER_SOURCE_PATTERNS =
 # Note: To get rid of all source code in the generated output, make sure also
 # VERBATIM_HEADERS is set to NO.
 
-SOURCE_BROWSER         = NO
+SOURCE_BROWSER         = YES
 
 # Setting the INLINE_SOURCES tag to YES will include the body
 # of functions and classes directly in the documentation.
@@ -955,7 +945,7 @@ HTML_TIMESTAMP         = YES
 # documentation will contain sections that can be hidden and shown after the
 # page has loaded.
 
-HTML_DYNAMIC_SECTIONS  = NO
+HTML_DYNAMIC_SECTIONS  = YES
 
 # With HTML_INDEX_NUM_ENTRIES one can control the preferred number of
 # entries shown in the various tree structured indices initially; the user