configure: Replace AC_TRY_RUN and AC_TRY_LINK.
[paraslash.git] / configure.ac
index a2e5fed14569deb9c059172d76b83dce0f10daa1..46985f02005acadb01c2ac6f0763c6722d5b44e2 100644 (file)
@@ -1,10 +1,10 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.60)
+AC_PREREQ([2.61])
 
 
-AC_INIT(paraslash, [git], maan@systemlinux.org)
+AC_INIT([paraslash],[git],[maan@systemlinux.org])
 AC_CONFIG_HEADER([config.h])
 
 AC_PATH_PROG(UNAMEPATH, uname, no)
@@ -74,7 +74,6 @@ AC_FUNC_MKTIME
 AC_FUNC_MMAP
 AC_FUNC_REALLOC
 AC_FUNC_SELECT_ARGTYPES
-AC_TYPE_SIGNAL
 AC_FUNC_STAT
 AC_FUNC_STRFTIME
 AC_FUNC_VPRINTF
@@ -87,28 +86,25 @@ AC_CHECK_FUNCS([atexit dup2 memchr memmove memset \
        strncasecmp strrchr strspn alarm mkdir inet_ntoa socket], [],
        [AC_MSG_ERROR([function not found, cannot live without it])])
 
-cmdline_dir="cmdline"
-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 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 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 crypt_common
-"
+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 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)"
@@ -123,10 +119,10 @@ 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 crypt_common
+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 fecdec_filter
-       client_common ggo udp_recv color fec prebuffer_filter audiod_command_list
+       client_common ggo udp_recv color fec prebuffer_filter
        bitstream imdct wma_common wmadec_filter buffer_tree"
 audiod_ldflags="-lm"
 audiod_audio_formats="wma"
@@ -135,15 +131,6 @@ 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 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"
-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"
@@ -152,14 +139,13 @@ writers=" file"
 default_writer="FILE_WRITE"
 
 client_cmdline_objs="add_cmdline(client)"
-client_errlist_objs="client net string fd sched stdin stdout time
+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"
@@ -194,8 +180,8 @@ AC_DEFUN([AX_FUNC_SNPRINTF],
 [AC_CHECK_FUNCS(snprintf vsnprintf)
 AC_MSG_CHECKING(for working snprintf)
 AC_CACHE_VAL(ac_cv_have_working_snprintf,
-[AC_TRY_RUN(
-[#include <stdio.h>
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <stdio.h>
 
 int main(void)
 {
@@ -209,12 +195,12 @@ int main(void)
     if (strcmp (bufd, "1")) exit (1);
     if (i != 3) exit (1);
     exit(0);
-}], ac_cv_have_working_snprintf=yes, ac_cv_have_working_snprintf=no, ac_cv_have_working_snprintf=cross)])
+}]])],[ac_cv_have_working_snprintf=yes],
+[ac_cv_have_working_snprintf=no],[ac_cv_have_working_snprintf=cross])])
 AC_MSG_RESULT([$ac_cv_have_working_snprintf])
 AC_MSG_CHECKING(for working vsnprintf)
 AC_CACHE_VAL(ac_cv_have_working_vsnprintf,
-[AC_TRY_RUN(
-[#include <stdio.h>
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdio.h>
 #include <stdarg.h>
 
 int my_vsnprintf (char *buf, const char *tmpl, ...)
@@ -239,7 +225,8 @@ int main(void)
     if (strcmp (bufd, "1")) exit (1);
     if (i != 3) exit (1);
     exit(0);
-}], ac_cv_have_working_vsnprintf=yes, ac_cv_have_working_vsnprintf=no, ac_cv_have_working_vsnprintf=cross)])
+}]])],[ac_cv_have_working_vsnprintf=yes],
+[ac_cv_have_working_vsnprintf=no],[ac_cv_have_working_vsnprintf=cross])])
 AC_MSG_RESULT([$ac_cv_have_working_vsnprintf])
 if test x$ac_cv_have_working_snprintf$ac_cv_have_working_vsnprintf != "xyesyes"; then
 AC_MSG_ERROR([fatal: buggy snprintf() detected])
@@ -250,13 +237,13 @@ have_osl=yes
 OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
-AC_ARG_WITH(osl_headers, [AC_HELP_STRING(--with-osl-headers=dir,
+AC_ARG_WITH(osl_headers, [AS_HELP_STRING(--with-osl-headers=dir,
        [look for osl.h also in dir])])
 if test -n "$with_osl_headers"; then
        osl_cppflags="-I$with_osl_headers"
        CPPFLAGS="$CPPFLAGS $osl_cppflags"
 fi
-AC_ARG_WITH(osl_libs, [AC_HELP_STRING(--with-osl-libs=dir,
+AC_ARG_WITH(osl_libs, [AS_HELP_STRING(--with-osl-libs=dir,
        [look for libosl also in dir])])
 if test -n "$with_osl_libs"; then
        osl_libs="-L$with_osl_libs"
@@ -275,6 +262,19 @@ or execute
 else
        extras="$extras server"
        executables="$executables server"
+       server_cmdline_objs="add_cmdline(server)"
+       server_errlist_objs="server afh_common mp3_afh vss command net
+               string signal time daemon http_send close_on_fork mm
+               crypt_common ipc dccp_send fd user_list chunk_queue
+               afs aft mood score attribute blob playlist sched acl
+               send_common udp_send color fec wma_afh wma_common sideband"
+       all_errlist_objs="$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_ldflags=""
+       server_audio_formats="mp3 wma"
        AC_SUBST(osl_cppflags)
        server_ldflags="$server_ldflags $osl_libs -losl"
 fi
@@ -301,13 +301,13 @@ if test "$check_openssl" = "yes"; then
        OLD_LD_FLAGS="$LDFLAGS"
        OLD_LIBS="$LIBS"
        have_openssl="yes"
-       AC_ARG_WITH(openssl_headers, [AC_HELP_STRING(--with-openssl-headers=dir,
+       AC_ARG_WITH(openssl_headers, [AS_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 $openssl_cppflags"
        fi
-       AC_ARG_WITH(openssl_libs, [AC_HELP_STRING(--with-openssl-libs=dir,
+       AC_ARG_WITH(openssl_libs, [AS_HELP_STRING(--with-openssl-libs=dir,
                [look for openssl libraries also in dir])])
        if test -n "$with_openssl_libs"; then
                openssl_libs="-L$with_openssl_libs"
@@ -358,13 +358,13 @@ if test "$check_gcrypt" = "yes"; then
        OLD_LD_FLAGS="$LDFLAGS"
        OLD_LIBS="$LIBS"
        have_gcrypt="yes"
-       AC_ARG_WITH(gcrypt_headers, [AC_HELP_STRING(--with-gcrypt-headers=dir,
+       AC_ARG_WITH(gcrypt_headers, [AS_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 $gcrypt_cppflags"
        fi
-       AC_ARG_WITH(gcrypt_libs, [AC_HELP_STRING(--with-gcrypt-libs=dir,
+       AC_ARG_WITH(gcrypt_libs, [AS_HELP_STRING(--with-gcrypt-libs=dir,
                [look for libgcrypt also in dir])])
        if test -n "$with_gcrypt_libs"; then
                gcrypt_libs="-L$with_gcrypt_libs"
@@ -424,13 +424,13 @@ AC_SEARCH_LIBS([inet_ntoa],[nsl],[],[
 ],[])
 ########################################################################### ucred
 AC_MSG_CHECKING(for struct ucred)
-AC_TRY_LINK([
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
        #define _GNU_SOURCE
        #include <sys/types.h>
        #include <sys/socket.h>
-],[
+]], [[
        struct ucred sucred; sucred.pid=0;
-],[have_ucred=yes],[have_ucred=no])
+]])],[have_ucred=yes],[have_ucred=no])
 AC_MSG_RESULT($have_ucred)
 if test ${have_ucred} = yes; then
        AC_DEFINE(HAVE_UCRED, 1, define to 1 you have struct ucred)
@@ -441,13 +441,13 @@ have_curses="yes"
 OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
-AC_ARG_WITH(curses_headers, [AC_HELP_STRING(--with-curses-headers=dir,
+AC_ARG_WITH(curses_headers, [AS_HELP_STRING(--with-curses-headers=dir,
        [look for curses.h also in dir])])
 if test -n "$with_curses_headers"; then
        curses_cppflags="-I$with_curses_headers"
        CPPFLAGS="$CPPFLAGS $curses_cppflags"
 fi
-AC_ARG_WITH(curses_libs, [AC_HELP_STRING(--with-curses-libs=dir,
+AC_ARG_WITH(curses_libs, [AS_HELP_STRING(--with-curses-libs=dir,
        [look for libcurses also in dir])])
 if test -n "$with_curses_libs"; then
        curses_libs="-L$with_curses_libs"
@@ -473,13 +473,13 @@ LIBS="$OLD_LIBS"
 
 ########################################################################### ip_mreqn
 AC_MSG_CHECKING(for struct ip_mreqn (UDPv4 multicast))
-AC_TRY_LINK([
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
        #include <netdb.h>
        #include <net/if.h>
-],[
+]], [[
        struct ip_mreqn mn;
        mn.imr_ifindex = 0;
-],[have_ip_mreqn=yes],[have_ip_mreqn=no])
+]])],[have_ip_mreqn=yes],[have_ip_mreqn=no])
 AC_MSG_RESULT($have_ip_mreqn)
 if test ${have_ip_mreqn} = yes; then
        AC_DEFINE(HAVE_IP_MREQN, 1, define to 1 you have struct ip_mreqn)
@@ -487,11 +487,11 @@ fi
 ########################################################################### osx
 
 AC_MSG_CHECKING(for CoreAudio (MacOs))
-AC_TRY_LINK([
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
        #include <CoreAudio/CoreAudio.h>
-],[
+]], [[
        AudioDeviceID id;
-],[have_core_audio=yes],[have_core_audio=no])
+]])],[have_core_audio=yes],[have_core_audio=no])
 AC_MSG_RESULT($have_core_audio)
 if test ${have_core_audio} = yes; then
        f1="-framework CoreAudio"
@@ -501,6 +501,12 @@ if test ${have_core_audio} = yes; then
        f="$f1 $f2 $f3 $f4"
 
        all_errlist_objs="$all_errlist_objs osx_write"
+       # ipc is linked into para_server server and into the osx writer. If osl
+       # was not found, para_server will not be built and ipc has not yet been
+       # added to the list of all objects, so we must add it here.
+       if test "$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 $f"
@@ -517,17 +523,17 @@ have_ogg="yes"
 OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
-AC_ARG_WITH(ogg_headers, [AC_HELP_STRING(--with-ogg-headers=dir,
+AC_ARG_WITH(ogg_headers, [AS_HELP_STRING(--with-ogg-headers=dir,
        [look for ogg headers also in dir])])
-AC_ARG_WITH(ogg_libs, [AC_HELP_STRING(--with-ogg-libs=dir,
+AC_ARG_WITH(ogg_libs, [AS_HELP_STRING(--with-ogg-libs=dir,
        [look for ogg libs also in dir])])
-AC_ARG_WITH(vorbis_headers, [AC_HELP_STRING(--with-vorbis-headers=dir,
+AC_ARG_WITH(vorbis_headers, [AS_HELP_STRING(--with-vorbis-headers=dir,
        [look for vorbis headers also in dir])])
-AC_ARG_WITH(vorbis_libs, [AC_HELP_STRING(--with-vorbis-libs=dir,
+AC_ARG_WITH(vorbis_libs, [AS_HELP_STRING(--with-vorbis-libs=dir,
        [look for vorbis libs also in dir])])
-AC_ARG_WITH(speex_headers, [AC_HELP_STRING(--with-speex-headers=dir,
+AC_ARG_WITH(speex_headers, [AS_HELP_STRING(--with-speex-headers=dir,
        [look for speex headers also in dir])])
-AC_ARG_WITH(speex_libs, [AC_HELP_STRING(--with-speex-libs=dir,
+AC_ARG_WITH(speex_libs, [AS_HELP_STRING(--with-speex-libs=dir,
        [look for speex libs also in dir])])
 
 if test -n "$with_ogg_headers"; then
@@ -568,6 +574,7 @@ if test "$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
@@ -586,8 +593,6 @@ 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="$all_errlist_objs oggdec_filter ogg_afh"
@@ -637,13 +642,13 @@ have_faad=yes
 OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
-AC_ARG_WITH(faad_headers, [AC_HELP_STRING(--with-faad-headers=dir,
+AC_ARG_WITH(faad_headers, [AS_HELP_STRING(--with-faad-headers=dir,
        [look for neaacdec.h also in dir])])
 if test -n "$with_faad_headers"; then
        faad_cppflags="-I$with_faad_headers"
        CPPFLAGS="$CPPFLAGS $faad_cppflags"
 fi
-AC_ARG_WITH(faad_libs, [AC_HELP_STRING(--with-faad-libs=dir,
+AC_ARG_WITH(faad_libs, [AS_HELP_STRING(--with-faad-libs=dir,
        [look for libfaad also in dir])])
 if test -n "$with_faad_libs"; then
        faad_libs="-L$with_faad_libs"
@@ -678,13 +683,13 @@ OLD_CPPFLAGS="$CPPFLAGS"
 OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
 
-AC_ARG_WITH(mad_headers, [AC_HELP_STRING(--with-mad-headers=dir,
+AC_ARG_WITH(mad_headers, [AS_HELP_STRING(--with-mad-headers=dir,
        [look for mad.h also in dir])])
 if test -n "$with_mad_headers"; then
        mad_cppflags="-I$with_mad_headers"
        CPPFLAGS="$CPPFLAGS $mad_cppflags"
 fi
-AC_ARG_WITH(mad_libs, [AC_HELP_STRING(--with-mad-libs=dir,
+AC_ARG_WITH(mad_libs, [AS_HELP_STRING(--with-mad-libs=dir,
        [look for libmad also in dir])])
 if test -n "$with_mad_libs"; then
        mad_libs="-L$with_mad_libs"
@@ -715,40 +720,63 @@ CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
 ###################################################################### libid3tag
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_libid3tag="yes"
+AC_ARG_WITH(id3tag_headers, [AS_HELP_STRING(--with-id3tag-headers=dir,
+       [look for id3tag header files also in dir])])
+if test -n "$with_id3tag_headers"; then
+       id3tag_cppflags="-I$with_id3tag_headers"
+       CPPFLAGS="$CPPFLAGS $id3tag_cppflags"
+fi
+AC_ARG_WITH(id3tag_libs, [AS_HELP_STRING(--with-id3tag-libs=dir,
+       [look for id3tag libs also in dir])])
+if test -n "$with_id3tag_libs"; then
+       id3tag_libs="-L$with_id3tag_libs"
+       LDFLAGS="$LDFLAGS $id3tag_libs"
+fi
+
 AC_MSG_CHECKING(for libid3tag)
-AC_TRY_LINK([
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
        #include <id3tag.h>
-],[
+]], [[
        struct id3_tag t = {.flags = 0};
-],[have_libid3tag=yes],[have_libid3tag=no])
+]])],[],[have_libid3tag=no])
 AC_MSG_RESULT($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,
+AC_ARG_WITH(flac_headers, [AS_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 $flac_cppflags"
 fi
-AC_ARG_WITH(flac_libs, [AC_HELP_STRING(--with-flac-libs=dir,
+AC_ARG_WITH(flac_libs, [AS_HELP_STRING(--with-flac-libs=dir,
        [look for flac libs also in dir])])
 if test -n "$with_flac_libs"; then
        flac_libs="-L$with_flac_libs"
        LDFLAGS="$LDFLAGS $flac_libs"
 fi
 AC_CHECK_HEADER(FLAC/stream_decoder.h, [], have_flac=no)
-AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_init_file], [], have_flac=no)
+AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_init_file], [], have_flac=no, -logg -lm)
 if test "$have_flac" = "yes"; then
        AC_DEFINE(HAVE_FLAC, 1, define to 1 if you want to build the flacdec filter)
        all_errlist_objs="$all_errlist_objs flacdec_filter flac_afh"
@@ -792,7 +820,7 @@ AC_CHECK_HEADER(sys/soundcard.h, [
        AC_CHECK_LIB(ossaudio, _oss_ioctl, [
                        audiod_ldflags="$audiod_ldflags -lossaudio"
                        write_ldflags="$write_ldflags -lossaudio"
-                       fade_ldflags="$write_ldflags -lossaudio"
+                       fade_ldflags="$fade_ldflags -lossaudio"
                ]
        )
        ],
@@ -852,13 +880,13 @@ OLD_LD_FLAGS="$LDFLAGS"
 OLD_LIBS="$LIBS"
 
 have_ao="yes"
-AC_ARG_WITH(ao_headers, [AC_HELP_STRING(--with-ao-headers=dir,
+AC_ARG_WITH(ao_headers, [AS_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 $ao_cppflags"
 fi
-AC_ARG_WITH(ao_libs, [AC_HELP_STRING(--with-ao-libs=dir,
+AC_ARG_WITH(ao_libs, [AS_HELP_STRING(--with-ao-libs=dir,
        [look for libao also in dir])])
 if test -n "$with_ao_libs"; then
        ao_libs="-L$with_ao_libs"
@@ -905,7 +933,69 @@ fi
 CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
+############################################################# readline
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+
+have_readline="yes"
+AC_ARG_WITH(readline_headers, [AS_HELP_STRING(--with-readline-headers=dir,
+       [look for libreadline header files also in dir])])
+if test -n "$with_readline_headers"; then
+       readline_cppflags="-I$with_readline_headers"
+       CPPFLAGS="$CPPFLAGS $readline_cppflags"
+fi
 
+AC_ARG_WITH(readline_libs, [AS_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])
@@ -1048,6 +1138,7 @@ 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