X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=configure.ac;h=c616b0a5ce67ebf7e82bfb279984c167286313df;hp=e5a23438dbdcb989abe8d1f4556bc4f1bd689fa5;hb=4744d937c4160898d1fe151257606430750e580c;hpb=f4b97417db2f20b75b091b5dcd7b579ad2d5c394

diff --git a/configure.ac b/configure.ac
index e5a23438..c616b0a5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,6 +23,14 @@ fi
 
 AC_C_BIGENDIAN()
 
+AC_PATH_PROG([gengetopt], [gengetopt])
+test -z "$gengetopt" && AC_MSG_ERROR(
+	[gengetopt is required to build this package])
+
+AC_PATH_PROG([help2man], [help2man])
+test -z "$help2man" && AC_MSG_ERROR(
+	[help2man is required to build this package])
+
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_INSTALL
@@ -84,23 +92,22 @@ AC_SUBST(cmdline_dir)
 AC_DEFUN([add_cmdline],[$(for i in $@; do printf "${i}.cmdline "; done)])
 
 
-all_errlist_objs="server mp3_afh afh_common vss command net string signal time
-daemon stat crypt http_send close_on_fork ipc acl afh fade amp_filter
-dccp_send fd user_list chunk_queue afs aft mood score attribute blob ringbuffer
-playlist sha1 sched audiod grab_client filter_common wav_filter compress_filter
-http_recv dccp_recv recv_common write_common file_write audiod_command
-client_common recv stdout filter stdin audioc write client exec send_common ggo
-udp_recv udp_send color fec fecdec_filter prebuffer_filter mm
-server_command_list afs_command_list audiod_command_list bitstream imdct wma_afh
-wma_common wmadec_filter buffer_tree
-"
+all_errlist_objs="mp3_afh afh_common net string signal time daemon
+	stat afh fade amp_filter fd ringbuffer sched audiod
+	grab_client filter_common wav_filter compress_filter http_recv
+	dccp_recv recv_common write_common file_write audiod_command
+	client_common recv stdout filter stdin audioc write client
+	exec send_common ggo udp_recv color fec fecdec_filter
+	prebuffer_filter audiod_command_list bitstream imdct
+	wma_afh wma_common wmadec_filter buffer_tree crypt_common
+	gui gui_theme sideband"
 
 executables="recv filter audioc write client afh audiod"
 
 recv_cmdline_objs="add_cmdline(recv http_recv dccp_recv udp_recv)"
 
 recv_errlist_objs="http_recv recv_common recv time string net dccp_recv
-	fd sched stdout ggo udp_recv fec buffer_tree"
+	fd sched stdout ggo udp_recv buffer_tree"
 recv_ldflags=""
 
 filter_cmdline_objs="add_cmdline(filter compress_filter amp_filter prebuffer_filter)"
@@ -115,10 +122,10 @@ audioc_errlist_objs="audioc string net fd"
 audioc_ldflags=""
 
 audiod_cmdline_objs="add_cmdline(audiod compress_filter http_recv dccp_recv file_write client amp_filter udp_recv prebuffer_filter)"
-audiod_errlist_objs="audiod signal string daemon stat net
+audiod_errlist_objs="audiod signal string daemon stat net crypt_common sideband
 	time grab_client filter_common wav_filter compress_filter amp_filter http_recv dccp_recv
-	recv_common fd sched write_common file_write audiod_command crypt fecdec_filter
-	client_common ggo udp_recv color fec prebuffer_filter sha1 audiod_command_list
+	recv_common fd sched write_common file_write audiod_command fecdec_filter
+	client_common ggo udp_recv color fec prebuffer_filter audiod_command_list
 	bitstream imdct wma_common wmadec_filter buffer_tree"
 audiod_ldflags="-lm"
 audiod_audio_formats="wma"
@@ -127,15 +134,6 @@ afh_cmdline_objs="add_cmdline(afh)"
 afh_errlist_objs="afh string fd mp3_afh afh_common time wma_afh wma_common"
 afh_ldflags=""
 
-server_cmdline_objs="add_cmdline(server)"
-server_errlist_objs="server afh_common mp3_afh vss command net string signal
-	time daemon crypt http_send close_on_fork mm
-	ipc dccp_send fd user_list chunk_queue afs aft mood score attribute
-	blob playlist sha1 sched acl send_common udp_send color fec
-	server_command_list afs_command_list wma_afh wma_common"
-server_ldflags=""
-server_audio_formats="mp3 wma"
-
 write_cmdline_objs="add_cmdline(write file_write)"
 write_errlist_objs="write write_common file_write time fd string sched stdin
 	buffer_tree ggo"
@@ -144,14 +142,13 @@ writers=" file"
 default_writer="FILE_WRITE"
 
 client_cmdline_objs="add_cmdline(client)"
-client_errlist_objs="client net string crypt fd sched stdin stdout time
-	client_common sha1 buffer_tree"
+client_errlist_objs="client net string fd sched stdin stdout time sideband
+	client_common buffer_tree crypt_common"
 client_ldflags=""
 
 gui_cmdline_objs="add_cmdline(gui)"
-gui_errlist_objs="exec signal string stat ringbuffer fd"
-gui_other_objs="gui gui_theme"
-gui_objs="$gui_cmdline_objs $gui_errlist_objs $gui_other_objs"
+gui_errlist_objs="exec signal string stat ringbuffer fd gui gui_theme"
+gui_objs="$gui_cmdline_objs $gui_errlist_objs"
 
 fade_cmdline_objs="add_cmdline(fade)"
 fade_errlist_objs="fade exec string fd"
@@ -267,52 +264,143 @@ or execute
 else
 	extras="$extras server"
 	executables="$executables server"
+	server_cmdline_objs="add_cmdline(server)"
+	server_errlist_objs="server afh_common mp3_afh vss command net
+		string signal time daemon http_send close_on_fork mm
+		crypt_common ipc dccp_send fd user_list chunk_queue
+		afs aft mood score attribute blob playlist sched acl
+		send_common udp_send color fec server_command_list
+		afs_command_list wma_afh wma_common sideband"
+
+	all_errlist_objs="$all_errlist_objs server vss command
+		http_send close_on_fork mm ipc dccp_send user_list
+		chunk_queue afs aft mood score attribute blob playlist
+		acl udp_send server_command_list afs_command_list"
+
+	server_ldflags=""
+	server_audio_formats="mp3 wma"
 	AC_SUBST(osl_cppflags)
 	server_ldflags="$server_ldflags $osl_libs -losl"
 fi
 CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
-########################################################################### ssl
-dnl @synopsis CHECK_SSL
-dnl
-dnl based on the follwing macro from the autoconf archive
-dnl
-dnl @category InstalledPackages
-dnl @author Mark Ethan Trostler <trostler@juniper.net>
-dnl @version 2003-01-28
-dnl @license AllPermissive
-
-AC_DEFUN([CHECK_SSL],
-[
-	for ssldir in $1 /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr; do
-		AC_MSG_CHECKING(for openssl in $ssldir)
-		if test -f "$ssldir/include/openssl/ssl.h"; then
-			found_ssl="yes"
-			AC_MSG_RESULT(yes)
-			SSL_CFLAGS="-I$ssldir/include"
-			SSL_CPPFLAGS="-I$ssldir/include"
-			break
+########################################################################### crypto
+AC_ARG_ENABLE(cryptolib, [AS_HELP_STRING(--enable-cryptolib=lib, [
+	Force using crypto library "lib". This package requires either
+	openssl or libgcrypt being installed. Possible values for "lib"
+	are thus "openssl" and "gcrypt". If this option is not given,
+	openssl is tried first. If openssl was not found, gcrypt is
+	tried next.])])
+
+case "$enable_cryptolib" in
+	"openssl") check_openssl="yes"; check_gcrypt="no";;
+	"gcrypt") check_openssl="no"; check_gcrypt="yes";;
+	"") check_openssl="yes"; check_gcrypt="yes";;
+	*) AC_MSG_ERROR([invalid value "$enable_cryptolib" for --enable-cryptolib]);;
+esac
+###################################################################### openssl
+if test "$check_openssl" = "yes"; then
+	OLD_CPPFLAGS="$CPPFLAGS"
+	OLD_LD_FLAGS="$LDFLAGS"
+	OLD_LIBS="$LIBS"
+	have_openssl="yes"
+	AC_ARG_WITH(openssl_headers, [AC_HELP_STRING(--with-openssl-headers=dir,
+		[look for openssl headers also in dir])])
+	if test -n "$with_openssl_headers"; then
+		openssl_cppflags="-I$with_openssl_headers"
+		CPPFLAGS="$CPPFLAGS $openssl_cppflags"
+	fi
+	AC_ARG_WITH(openssl_libs, [AC_HELP_STRING(--with-openssl-libs=dir,
+		[look for openssl libraries also in dir])])
+	if test -n "$with_openssl_libs"; then
+		openssl_libs="-L$with_openssl_libs"
+		LDFLAGS="$LDFLAGS $openssl_libs"
+	fi
+	AC_CHECK_HEADER(openssl/ssl.h, [], [have_openssl="no"])
+	AC_CHECK_LIB([crypto], [RAND_bytes], [], [have_openssl="no"])
+	if test "$have_openssl" = "no" -a -z "$with_openssl_headers$with_openssl_libs"; then
+		# try harder: openssl is sometimes installed in /usr/local/ssl
+		openssl_cppflags="-I/usr/local/ssl/include"
+		CPPFLAGS="$CPPFLAGS $openssl_cppflags"
+		openssl_libs="-L/usr/local/ssl/lib"
+		LDFLAGS="$LDFLAGS $openssl_libs"
+		# clear cache
+		unset ac_cv_header_openssl_ssl_h 2> /dev/null
+		unset ac_cv_lib_crypto_RAND_bytes 2> /dev/null
+		AC_CHECK_HEADER(openssl/ssl.h, [have_openssl="yes"], [])
+		if test "$have_openssl" = "yes"; then
+			AC_CHECK_LIB([crypto], [RAND_bytes], [], [have_openssl="no"])
 		fi
-		AC_MSG_RESULT(no)
-	done
-	if test x_$found_ssl != x_yes; then
-		AC_MSG_ERROR(Cannot find ssl libraries)
+	fi
+	if test "$have_openssl" = "yes"; then
+		AC_DEFINE(HAVE_OPENSSL, 1, [define to 1 to turn on openssl support])
+		AC_SUBST(openssl_cppflags)
+		openssl_libs="$openssl_libs -lssl -lcrypto"
+		server_ldflags="$server_ldflags $openssl_libs"
+		client_ldflags="$client_ldflags $openssl_libs"
+		audiod_ldflags="$audiod_ldflags $openssl_libs"
+
+		all_errlist_objs="$all_errlist_objs crypt"
+		server_errlist_objs="$server_errlist_objs crypt"
+		client_errlist_objs="$client_errlist_objs crypt"
+		audiod_errlist_objs="$audiod_errlist_objs crypt"
+
+		check_gcrypt="no"
 	else
-		SSL_LIBS="-lssl -lcrypto";
-		SSL_LDFLAGS="-L$ssldir/lib";
+		AC_MSG_WARN([openssl libraries not found])
 	fi
-	AC_SUBST(SSL_CPPFLAGS)
-])dnl
-
-AC_ARG_ENABLE(ssldir, [AS_HELP_STRING(--enable-ssldir=path,
-	[Search for openssl also in path.])])
-if test "$enable_ssldir" = "yes"; then enable_ssldir=""; fi
-CHECK_SSL($enable_ssldir)
-server_ldflags="$server_ldflags $SSL_LDFLAGS $SSL_LIBS"
-client_ldflags="$client_ldflags $SSL_LDFLAGS $SSL_LIBS"
-audiod_ldflags="$audiod_ldflags $SSL_LDFLAGS $SSL_LIBS"
-
+	CPPFLAGS="$OLD_CPPFLAGS"
+	LDFLAGS="$OLD_LDFLAGS"
+	LIBS="$OLD_LIBS"
+else
+	have_openssl="no"
+fi
+########################################################################### gcrypt
+if test "$check_gcrypt" = "yes"; then
+	OLD_CPPFLAGS="$CPPFLAGS"
+	OLD_LD_FLAGS="$LDFLAGS"
+	OLD_LIBS="$LIBS"
+	have_gcrypt="yes"
+	AC_ARG_WITH(gcrypt_headers, [AC_HELP_STRING(--with-gcrypt-headers=dir,
+		[look for gcrypt headers also in dir])])
+	if test -n "$with_gcrypt_headers"; then
+		gcrypt_cppflags="-I$with_gcrypt_headers"
+		CPPFLAGS="$CPPFLAGS $gcrypt_cppflags"
+	fi
+	AC_ARG_WITH(gcrypt_libs, [AC_HELP_STRING(--with-gcrypt-libs=dir,
+		[look for libgcrypt also in dir])])
+	if test -n "$with_gcrypt_libs"; then
+		gcrypt_libs="-L$with_gcrypt_libs"
+		LDFLAGS="$LDFLAGS $gcrypt_libs"
+	fi
+	AC_CHECK_HEADER(gcrypt.h, [], [have_gcrypt="no"])
+	AC_CHECK_LIB([gcrypt], [gcry_randomize], [], [have_gcrypt="no"])
+	if test "$have_gcrypt" = "yes"; then
+		AC_DEFINE(HAVE_GCRYPT, 1, [define to 1 to turn on gcrypt support])
+		AC_SUBST(gcrypt_cppflags)
+		gcrypt_libs="$gcrypt_libs -lgcrypt"
+		server_ldflags="$server_ldflags $gcrypt_libs"
+		client_ldflags="$client_ldflags $gcrypt_libs"
+		audiod_ldflags="$audiod_ldflags $gcrypt_libs"
+
+		all_errlist_objs="$all_errlist_objs gcrypt"
+		server_errlist_objs="$server_errlist_objs gcrypt"
+		client_errlist_objs="$client_errlist_objs gcrypt"
+		audiod_errlist_objs="$audiod_errlist_objs gcrypt"
+	else
+		AC_MSG_WARN([gcrypt library not found])
+	fi
+	CPPFLAGS="$OLD_CPPFLAGS"
+	LDFLAGS="$OLD_LDFLAGS"
+	LIBS="$OLD_LIBS"
+else
+	have_gcrypt="no"
+fi
+###########################################################################
+if test "$have_openssl" = "no" -a "$have_gcrypt" = "no"; then
+	AC_MSG_ERROR([neither openssl nor gcrypt usable])
+fi
 ########################################################################### libsocket
 AC_CHECK_LIB([c], [socket],
 	[socket_lib=],
@@ -417,11 +505,17 @@ if test ${have_core_audio} = yes; then
 	f="$f1 $f2 $f3 $f4"
 
 	all_errlist_objs="$all_errlist_objs osx_write"
-	audiod_errlist_objs="$audiod_errlist_objs osx_write"
+	# ipc is linked into para_server server and into the osx writer. If osl
+	# was not found, para_server will not be built and ipc has not yet been
+	# added to the list of all objects, so we must add it here.
+	if test "$have_osl" = "no"; then
+		all_errlist_objs="$all_errlist_objs ipc"
+	fi
+	audiod_errlist_objs="$audiod_errlist_objs osx_write ipc"
 	audiod_cmdline_objs="$audiod_cmdline_objs osx_write.cmdline"
 	audiod_ldflags="$audiod_ldflags $f"
 
-	write_errlist_objs="$write_errlist_objs osx_write"
+	write_errlist_objs="$write_errlist_objs osx_write ipc"
 	write_cmdline_objs="$write_cmdline_objs osx_write.cmdline"
 	write_ldflags="$write_ldflags $f"
 	writers="$writers osx"
@@ -484,6 +578,7 @@ if test "$have_ogg" = "yes"; then
 	AC_CHECK_LIB([speex], [speex_decoder_init], [], [ have_speex="no" ])
 	AC_CHECK_HEADERS([speex/speex.h], [], [ have_speex="no" ])
 else
+	AC_MSG_WARN([vorbis/speex depend on libogg, which was not detected])
 	have_vorbis="no"
 	have_speex="no"
 fi
@@ -502,8 +597,6 @@ if test "$have_vorbis" = "yes" || test "$have_speex" = "yes"; then
 	all_errlist_objs="$all_errlist_objs ogg_afh_common"
 	afh_errlist_objs="$afh_errlist_objs ogg_afh_common"
 	server_errlist_objs="$server_errlist_objs ogg_afh_common"
-else
-	AC_MSG_WARN([vorbis/speex require ogg])
 fi
 if test "$have_vorbis" = "yes"; then
 	all_errlist_objs="$all_errlist_objs oggdec_filter ogg_afh"
@@ -631,20 +724,84 @@ CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
 ###################################################################### libid3tag
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_libid3tag="yes"
+AC_ARG_WITH(id3tag_headers, [AC_HELP_STRING(--with-id3tag-headers=dir,
+	[look for id3tag header files also in dir])])
+if test -n "$with_id3tag_headers"; then
+	id3tag_cppflags="-I$with_id3tag_headers"
+	CPPFLAGS="$CPPFLAGS $id3tag_cppflags"
+fi
+AC_ARG_WITH(id3tag_libs, [AC_HELP_STRING(--with-id3tag-libs=dir,
+	[look for id3tag libs also in dir])])
+if test -n "$with_id3tag_libs"; then
+	id3tag_libs="-L$with_id3tag_libs"
+	LDFLAGS="$LDFLAGS $id3tag_libs"
+fi
+
 AC_MSG_CHECKING(for libid3tag)
 AC_TRY_LINK([
 	#include <id3tag.h>
 ],[
 	struct id3_tag t = {.flags = 0};
-],[have_libid3tag=yes],[have_libid3tag=no])
+],[], [have_libid3tag=no])
 AC_MSG_RESULT($have_libid3tag)
+
 if test ${have_libid3tag} = yes; then
 	AC_DEFINE(HAVE_LIBID3TAG, 1, define to 1 you have libid3tag)
-	server_ldflags="$server_ldflags -lid3tag"
-	afh_ldflags="$afh_ldflags -lid3tag"
+	server_ldflags="$server_ldflags $id3tag_libs -lid3tag -lz"
+	afh_ldflags="$afh_ldflags $id3tag_libs -lid3tag -lz"
+	AC_SUBST(id3tag_cppflags)
 else
 	AC_MSG_WARN([no support for id3v2 tags])
 fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"
+########################################################################### flac
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_flac="yes"
+AC_ARG_WITH(flac_headers, [AC_HELP_STRING(--with-flac-headers=dir,
+	[look for flac headers also in dir])])
+if test -n "$with_flac_headers"; then
+	flac_cppflags="-I$with_flac_headers"
+	CPPFLAGS="$CPPFLAGS $flac_cppflags"
+fi
+AC_ARG_WITH(flac_libs, [AC_HELP_STRING(--with-flac-libs=dir,
+	[look for flac libs also in dir])])
+if test -n "$with_flac_libs"; then
+	flac_libs="-L$with_flac_libs"
+	LDFLAGS="$LDFLAGS $flac_libs"
+fi
+AC_CHECK_HEADER(FLAC/stream_decoder.h, [], have_flac=no)
+AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_init_file], [], have_flac=no, -logg -lm)
+if test "$have_flac" = "yes"; then
+	AC_DEFINE(HAVE_FLAC, 1, define to 1 if you want to build the flacdec filter)
+	all_errlist_objs="$all_errlist_objs flacdec_filter flac_afh"
+	filter_errlist_objs="$filter_errlist_objs flacdec_filter"
+	audiod_errlist_objs="$audiod_errlist_objs flacdec_filter"
+	afh_errlist_objs="$afh_errlist_objs flac_afh"
+	server_errlist_objs="$server_errlist_objs flac_afh"
+	filter_ldflags="$filter_ldflags $flac_libs -lFLAC"
+	audiod_ldflags="$audiod_ldflags $flac_libs -lFLAC"
+	server_ldflags="$server_ldflags $flac_libs -lFLAC"
+	afh_ldflags="$afh_ldflags $flac_libs -lFLAC"
+	filters="$filters flacdec"
+	server_audio_formats="$server_audio_formats flac"
+	audiod_audio_formats="$audiod_audio_formats flac"
+	AC_SUBST(flac_cppflags)
+else
+	AC_MSG_WARN([no flac support in para_audiod/para_filter])
+fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"
 ########################################################################### oss
 OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
@@ -721,6 +878,129 @@ fi
 CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
+########################################################################### libao
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_ao="yes"
+AC_ARG_WITH(ao_headers, [AC_HELP_STRING(--with-ao-headers=dir,
+	[look for ao/ao.h also in dir])])
+if test -n "$with_ao_headers"; then
+	ao_cppflags="-I$with_ao_headers"
+	CPPFLAGS="$CPPFLAGS $ao_cppflags"
+fi
+AC_ARG_WITH(ao_libs, [AC_HELP_STRING(--with-ao-libs=dir,
+	[look for libao also in dir])])
+if test -n "$with_ao_libs"; then
+	ao_libs="-L$with_ao_libs"
+	LDFLAGS="$LDFLAGS $ao_libs"
+fi
+msg="no libao support for para_audiod/para_write"
+AC_CHECK_HEADERS([ao/ao.h], [
+	], [
+	have_ao="no"
+	AC_MSG_WARN([ao.h not found, $msg])
+])
+if test "$have_ao" = "yes"; then
+	AC_CHECK_LIB([ao], [ao_initialize], [], [
+		have_ao="no"
+		AC_MSG_WARN([ao lib not found or not working, $msg])
+	])
+fi
+if test "$have_ao" = "yes"; then
+	AC_CHECK_HEADERS([pthread.h], [
+		], [
+		have_ao="no"
+		AC_MSG_WARN([pthread.h not found, $msg])
+	])
+fi
+if test "$have_ao" = "yes"; then
+	AC_CHECK_LIB([pthread], [pthread_create], [], [
+		have_ao="no"
+		AC_MSG_WARN([pthread lib not found or not working, $msg])
+	])
+fi
+if test "$have_ao" = "yes"; then
+	all_errlist_objs="$all_errlist_objs ao_write"
+	audiod_errlist_objs="$audiod_errlist_objs ao_write"
+	audiod_cmdline_objs="$audiod_cmdline_objs add_cmdline(ao_write)"
+	audiod_ldflags="$audiod_ldflags -lao -lpthread"
+
+	write_errlist_objs="$write_errlist_objs ao_write"
+	write_cmdline_objs="$write_cmdline_objs add_cmdline(ao_write)"
+	write_ldflags="$write_ldflags $ao_libs -lao -lpthread"
+	writers="$writers ao"
+	AC_SUBST(ao_cppflags)
+fi
+
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"
+############################################################# readline
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_readline="yes"
+AC_ARG_WITH(readline_headers, [AC_HELP_STRING(--with-readline-headers=dir,
+	[look for libreadline header files also in dir])])
+if test -n "$with_readline_headers"; then
+	readline_cppflags="-I$with_readline_headers"
+	CPPFLAGS="$CPPFLAGS $readline_cppflags"
+fi
+
+AC_ARG_WITH(readline_libs, [AC_HELP_STRING(--with-readline-libs=dir,
+	[look for readline library also in dir])])
+if test -n "$with_readline_libs"; then
+	readline_libs="-L$with_readline_libs"
+	LDFLAGS="$LDFLAGS $readline_libs"
+fi
+msg="no interactive cli support"
+AC_CHECK_HEADERS([readline/readline.h], [
+	], [
+	have_readline="no"
+	AC_MSG_WARN([readline/readline.h not found, $msg])
+])
+if test "$have_readline" = "yes"; then
+	readline_libs="$readline_libs -lreadline"
+	AC_SEARCH_LIBS([rl_replace_line], [readline], [], [have_readline="no"])
+	if test "$have_readline" = "no"; then # try with -lcurses
+                # clear cache
+		AC_MSG_NOTICE([trying again with -lcurses])
+                unset ac_cv_search_rl_replace_line 2> /dev/null
+		AC_SEARCH_LIBS([rl_replace_line], [readline], [
+			have_readline=yes
+			readline_libs="$readline_libs -lcurses"
+		], [], [-lcurses])
+	fi
+	if test "$have_readline" = "no"; then # try with -ltermcap
+                # clear cache
+		AC_MSG_NOTICE([trying again with -ltermcap])
+                unset ac_cv_search_rl_replace_line 2> /dev/null
+		AC_SEARCH_LIBS([rl_replace_line], [readline], [
+			have_readline=yes
+			readline_libs="$readline_libs -ltermcap"
+		], [], [-ltermcap])
+	fi
+fi
+
+if test "$have_readline" = "yes"; then
+	all_errlist_objs="$all_errlist_objs interactive"
+	client_errlist_objs="$client_errlist_objs interactive"
+	client_ldflags="$client_ldflags $readline_libs"
+	audioc_errlist_objs="$audioc_errlist_objs buffer_tree interactive sched time"
+	audioc_ldflags="$audioc_ldflags $readline_libs"
+	AC_SUBST(readline_cppflags)
+	AC_DEFINE(HAVE_READLINE, 1, define to 1 to turn on readline support)
+else
+	AC_MSG_WARN([libreadline not found or unusable])
+fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"
+#############################################################
+
 
 AC_SUBST(install_sh, [$INSTALL])
 AC_CONFIG_FILES([Makefile])
@@ -740,7 +1020,7 @@ for obj in $all_errlist_objs; do
 done
 AC_DEFINE_UNQUOTED(DEFINE_ERRLIST_OBJECT_ENUM,
 	[enum {$SS NUM_SS}],
-	[list of all objects that use paraslash's error facility]
+	[list of all objects that use the paraslash error facility]
 )
 
 ################################################################## status items
@@ -862,6 +1142,7 @@ AC_MSG_NOTICE([
 paraslash configuration:
 ~~~~~~~~~~~~~~~~~~~~~~~~
 unix socket credentials: $have_ucred
+readline (interactive CLIs): $have_readline
 audio formats supported by para_server/para_afh: $server_audio_formats
 id3 version2 support: $have_libid3tag
 filters supported by para_audiod/para_filter: $filters