diff --git a/ares/Makefile.dj b/ares/Makefile.dj
index c146b2126..7ba303ff6 100644
--- a/ares/Makefile.dj
+++ b/ares/Makefile.dj
@@ -4,42 +4,17 @@
 #
 # $Id$
 
+
 TOPDIR = ..
 
 include ../packages/DOS/common.dj
-
 include Makefile.inc
 
-CFLAGS += -DWATT32 -DHAVE_AF_INET6 -DHAVE_PF_INET6 -DHAVE_IOCTLSOCKET \
-          -DHAVE_IOCTLSOCKET_FIONBIO -DHAVE_STRUCT_IN6_ADDR \
-          -DHAVE_SOCKADDR_IN6_SIN6_SCOPE_ID -DHAVE_SYS_TIME_H \
-          -DHAVE_STRUCT_SOCKADDR_IN6 -DHAVE_STRUCT_ADDRINFO \
-          -DHAVE_ARPA_NAMESER_H -DHAVE_ARPA_INET_H -DHAVE_SYS_SOCKET_H \
-          -DHAVE_SYS_UIO_H -DHAVE_NETINET_IN_H -DHAVE_NETINET_TCP_H \
-          -DNS_INADDRSZ=4 -DHAVE_RECV -DHAVE_SEND -DHAVE_GETTIMEOFDAY \
-          -DSEND_TYPE_ARG1='int'   -DSEND_QUAL_ARG2='const' \
-          -DSEND_TYPE_ARG2='void*' -DSEND_TYPE_ARG3='int' \
-          -DSEND_TYPE_ARG4='int'   -DSEND_TYPE_RETV='int' \
-          -DRECV_TYPE_ARG1='int'   -DRECV_TYPE_ARG2='void*' \
-          -DRECV_TYPE_ARG3='int'   -DRECV_TYPE_ARG4='int' \
-          -DRECV_TYPE_RETV='int'   -DHAVE_STRUCT_TIMEVAL \
-          -Dselect=select_s        -UHAVE_CONFIG_H \
-          -DRECVFROM_TYPE_ARG1='int' -DRECVFROM_TYPE_ARG2='void' \
-          -DRECVFROM_TYPE_ARG3='int' -DRECVFROM_TYPE_ARG4='int' \
-          -DRECVFROM_TYPE_ARG6='int' -DRECVFROM_TYPE_RETV='int' \
-          -DRECVFROM_TYPE_ARG5='struct sockaddr' -DHAVE_RECVFROM \
-          -DRECVFROM_TYPE_ARG2_IS_VOID -DHAVE_STRDUP -DHAVE_NETDB_H \
-          -DHAVE_STRCASECMP -DHAVE_STRNCASECMP -DHAVE_GETHOSTNAME \
-          -DHAVE_LIMITS_H
+CFLAGS += -DHAVE_CONFIG_H -DWATT32
 
 LDFLAGS = -s
 
-ifeq ($(USE_DEBUG),1)
-  CFLAGS += -DDEBUGBUILD
-endif
-
 ifeq ($(USE_CURLDEBUG),1)
-  CFLAGS += -DCURLDEBUG
   EX_LIBS  = ../lib/libcurl.a
   OBJ_HACK = $(OBJECTS)
 else
@@ -62,12 +37,15 @@ EX_LIBS += $(WATT32_ROOT)/lib/libwatt.a
 
 OBJECTS = $(addprefix $(OBJ_DIR)/, $(CSOURCES:.c=.o))
 
-all: $(OBJ_DIR) libcares.a ahost.exe adig.exe acountry.exe
+all: $(OBJ_DIR) config.h libcares.a ahost.exe adig.exe acountry.exe
 	@echo Welcome to c-ares.
 
 libcares.a: $(OBJECTS)
 	ar rs $@ $?
 
+config.h: config.dos
+	$(COPY) $^ $@
+
 ahost.exe: ahost.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK)
 	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS)
 
@@ -77,12 +55,30 @@ adig.exe: adig.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK)
 acountry.exe: acountry.c $(OBJ_DIR)/ares_getopt.o $(OBJ_HACK)
 	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(EX_LIBS)
 
-clean:
-	rm -f $(OBJECTS) $(OBJ_DIR)/ares_getopt.o libcares.a
+# clean generated files
+#
+genclean:
+	- $(DELETE) config.h
 
-vclean realclean: clean
-	rm -f ahost.exe adig.exe acountry.exe depend.dj
-	- rmdir $(OBJ_DIR)
+# clean object files and subdir
+#
+objclean: genclean
+	- $(DELETE) $(OBJ_DIR)$(DS)*.o
+	- $(RMDIR) $(OBJ_DIR)
+
+# clean without removing built library and programs
+#
+clean: objclean
+	- $(DELETE) depend.dj
+
+# clean everything
+#
+realclean vclean: clean
+	- $(DELETE) libcares.a
+	- $(DELETE) acountry.exe
+	- $(DELETE) adig.exe
+	- $(DELETE) ahost.exe
+	- $(DELETE) libcares.a
 
 -include depend.dj
 
diff --git a/ares/config.dos b/ares/config.dos
new file mode 100644
index 000000000..98b176545
--- /dev/null
+++ b/ares/config.dos
@@ -0,0 +1,176 @@
+#ifndef HEADER_CONFIG_DOS_H
+#define HEADER_CONFIG_DOS_H
+
+/* $Id$ */
+
+/* ================================================================ */
+/*       ares/config.dos - Hand crafted config file for DOS         */
+/* ================================================================ */
+
+#if defined(DJGPP)
+  #define OS  "MSDOS/djgpp"
+#elif defined(__HIGHC__)
+  #define OS  "MSDOS/HighC"
+#elif defined(__WATCOMC__)
+  #define OS  "MSDOS/Watcom"
+#else
+  #define OS  "MSDOS/?"
+#endif
+
+#define PACKAGE  "c-ares"
+
+#define HAVE_FCNTL_H           1
+#define HAVE_GETADDRINFO       1
+#define HAVE_GETNAMEINFO       1
+#define HAVE_GETPROTOBYNAME    1
+#define HAVE_GETTIMEOFDAY      1
+#define HAVE_IO_H              1
+#define HAVE_IOCTL             1
+#define HAVE_IOCTL_FIONBIO     1
+#define HAVE_IOCTLSOCKET       1
+#define HAVE_IOCTLSOCKET_FIONBIO   1
+#define HAVE_LIMITS_H          1
+#define HAVE_LOCALE_H          1
+#define HAVE_LONGLONG          1
+#define HAVE_MEMORY_H          1
+#define HAVE_NET_IF_H          1
+#define HAVE_PROCESS_H         1
+#define HAVE_RECV              1
+#define HAVE_RECVFROM          1
+#define HAVE_SELECT            1
+#define HAVE_SEND              1
+#define HAVE_SETJMP_H          1
+#define HAVE_SETLOCALE         1
+#define HAVE_SETMODE           1
+#define HAVE_SIGNAL            1
+#define HAVE_SOCKET            1
+#define HAVE_SPNEGO            1
+#define HAVE_STRDUP            1
+#define HAVE_STRICMP           1
+#define HAVE_STRTOLL           1
+#define HAVE_STRUCT_TIMEVAL    1
+#define HAVE_STRUCT_IN6_ADDR   1
+#define HAVE_SYS_IOCTL_H       1
+#define HAVE_SYS_SOCKET_H      1
+#define HAVE_SYS_STAT_H        1
+#define HAVE_SYS_TYPES_H       1
+#define HAVE_TERMIOS_H         1
+#define HAVE_TIME_H            1
+#define HAVE_UNISTD_H          1
+
+#define NEED_MALLOC_H          1
+
+#define RETSIGTYPE             void
+#define SIZEOF_LONG_DOUBLE     16
+#define STDC_HEADERS           1
+#define TIME_WITH_SYS_TIME     1
+
+/* Qualifiers for send(), recv(), recvfrom() and getnameinfo(). */
+
+#define SEND_TYPE_ARG1         int
+#define SEND_QUAL_ARG2         const
+#define SEND_TYPE_ARG2         void *
+#define SEND_TYPE_ARG3         int
+#define SEND_TYPE_ARG4         int
+#define SEND_TYPE_RETV         int
+
+#define RECV_TYPE_ARG1         int
+#define RECV_TYPE_ARG2         void *
+#define RECV_TYPE_ARG3         int
+#define RECV_TYPE_ARG4         int
+#define RECV_TYPE_RETV         int
+
+#define RECVFROM_TYPE_ARG1     int
+#define RECVFROM_TYPE_ARG2     void
+#define RECVFROM_TYPE_ARG3     int
+#define RECVFROM_TYPE_ARG4     int
+#define RECVFROM_TYPE_ARG5     struct sockaddr
+#define RECVFROM_TYPE_ARG6     int
+#define RECVFROM_TYPE_RETV     int
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+#define GETNAMEINFO_QUAL_ARG1  const
+#define GETNAMEINFO_TYPE_ARG1  struct sockaddr *
+#define GETNAMEINFO_TYPE_ARG2  int
+#define GETNAMEINFO_TYPE_ARG46 int
+#define GETNAMEINFO_TYPE_ARG7  int
+
+#define BSD
+
+/* USE_ZLIB on cmd-line */
+#ifdef USE_ZLIB
+  #define HAVE_ZLIB_H            1
+  #define HAVE_LIBZ              1
+#endif
+
+/* USE_SSLEAY on cmd-line */
+#ifdef USE_SSLEAY
+  #define HAVE_CRYPTO_CLEANUP_ALL_EX_DATA 1
+  #define HAVE_OPENSSL_ENGINE_H  1
+  #define OPENSSL_NO_KRB5        1
+  #define USE_OPENSSL            1
+#endif
+
+/* to disable LDAP */
+#define CURL_DISABLE_LDAP        1
+
+#define in_addr_t  u_long
+
+#if defined(__HIGHC__) || \
+    (defined(__GNUC__) && (__GNUC__ < 4))
+#define ssize_t    int
+#endif
+
+#define CURL_CA_BUNDLE  getenv("CURL_CA_BUNDLE")
+
+/* Target HAVE_x section */
+
+#if defined(DJGPP)
+  #define HAVE_BASENAME             1
+  #define HAVE_STRCASECMP           1
+  #define HAVE_STRNCASECMP          1
+  #define HAVE_SIGACTION            1
+  #define HAVE_SIGSETJMP            1
+  #define HAVE_SYS_TIME_H           1
+  #define HAVE_VARIADIC_MACROS_GCC  1
+
+  #if (DJGPP_MINOR >= 4)
+    #define HAVE_STRLCAT  1
+  #endif
+
+  /* Because djgpp <= 2.03 doesn't have snprintf() etc. */
+  #if (DJGPP_MINOR < 4)
+    #define _MPRINTF_REPLACE
+  #endif
+
+#elif defined(__WATCOMC__)
+  #define HAVE_STRCASECMP 1
+
+#elif defined(__HIGHC__)
+  #define HAVE_SYS_TIME_H 1
+#endif
+
+#ifdef WATT32
+  #define HAVE_AF_INET6                    1
+  #define HAVE_ARPA_INET_H                 1
+  #define HAVE_ARPA_NAMESER_H              1
+  #define HAVE_GETHOSTNAME                 1
+  #define HAVE_NETDB_H                     1
+  #define HAVE_NETINET_IN_H                1
+  #define HAVE_NETINET_TCP_H               1
+  #define HAVE_PF_INET6                    1
+  #define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID  1
+  #define HAVE_STRUCT_ADDRINFO             1
+  #define HAVE_STRUCT_IN6_ADDR             1
+  #define HAVE_STRUCT_SOCKADDR_IN6         1
+  #define HAVE_SYS_SOCKET_H                1
+  #define HAVE_SYS_UIO_H                   1
+  #define NS_INADDRSZ                      4
+  #define HAVE_STRUCT_SOCKADDR_IN6         1
+#endif
+
+#undef word
+#undef byte
+
+#endif /* HEADER_CONFIG_DOS_H */
+