c-ares with --enable-curldebug uses memdebug.h from libcurl's lib subdirectory.
memdebug.h needs access to libcurl's setup.h from libcurl's lib subdirectory
and also needs access to libcurl's generated curl_config.h
#
# $(top_builddir)/../include is for libcurl's generated curl/curlbuild.h file
# $(top_srcdir)/../include is for libcurl's external include files
+# $(top_builddir)/../lib is for libcurl's generated lib/curl_config.h file
+# $(top_srcdir)/../lib is for libcurl's lib/setup.h and other "private" files
# $(top_builddir) is for c-ares's generated ares_config.h file
# $(top_srcdir) is for c-ares's lib/setup.h and other "c-ares-private" files
if CURLDEBUG
INCLUDES = -I$(top_builddir)/../include \
-I$(top_srcdir)/../include \
+ -I$(top_builddir)/../lib \
+ -I$(top_srcdir)/../lib \
-I$(top_builddir) \
-I$(top_srcdir)
else