include the Makefile.inc file to get all sources and headers

lib/Makefile.am

@@ -85,24 +85,8 @@ endif
 
 libcurl_la_LDFLAGS = $(UNDEF) $(VERSION) $(MIMPURE)
 
-HHEADERS = arpa_telnet.h netrc.h file.h timeval.h base64.h hostip.h	\
-  progress.h formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h	\
-  if2ip.h speedcheck.h urldata.h getdate.h ldap.h ssluse.h escape.h	\
-  telnet.h getinfo.h strequal.h security.h krb4.h memdebug.h		\
-  inet_ntoa_r.h http_chunks.h strtok.h connect.h llist.h hash.h		\
-  content_encoding.h share.h md5.h http_digest.h http_negotiate.h	\
-  http_ntlm.h ca-bundle.h inet_pton.h strtoofft.h strerror.h		\
-  inet_ntop.h curlx.h memory.h setup.h transfer.h
-
-CSOURCES = file.c timeval.c base64.c hostip.c progress.c formdata.c	\
-  cookie.c http.c sendf.c ftp.c url.c dict.c if2ip.c speedcheck.c	\
-  getdate.c ldap.c ssluse.c version.c getenv.c escape.c mprintf.c	\
-  telnet.c netrc.c getinfo.c transfer.c strequal.c easy.c security.c	\
-  krb4.c memdebug.c http_chunks.c strtok.c connect.c llist.c hash.c	\
-  multi.c content_encoding.c share.c http_digest.c md5.c		\
-  http_negotiate.c http_ntlm.c inet_pton.c strtoofft.c strerror.c	\
-  hostares.c hostasyn.c hostip4.c hostip6.c hostsyn.c hostthre.c	\
-  inet_ntop.c
+# Makefile.inc provides the CSOURCES and HHEADERS defines
+include Makefile.inc
 
 libcurl_la_SOURCES = $(CSOURCES) $(HHEADERS)