Generating the apidoc in an out-of-tree build fixed.

Doxyfile.in

@@ -527,11 +527,11 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = src/libstrongswan \
-                         src/charon \
-                         src/libsimaka \
-                         src/libfast \
-                         src/manager
+INPUT                  = @SRC_DIR@/src/libstrongswan \
+                         @SRC_DIR@/src/charon \
+                         @SRC_DIR@/src/libsimaka \
+                         @SRC_DIR@/src/libfast \
+                         @SRC_DIR@/src/manager
 
 # 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

Makefile.am

@@ -13,6 +13,7 @@ Doxyfile :	Doxyfile.in
 		sed \
 		-e "s:\@PACKAGE_VERSION\@:$(PACKAGE_VERSION):" \
 		-e "s:\@PACKAGE_NAME\@:$(PACKAGE_NAME):" \
+		-e "s:\@SRC_DIR\@:$(srcdir):" \
 		$(srcdir)/$@.in > $@
 
 apidoc :	Doxyfile