Re: [cdesktopenv-devel] Building XEmacs with CDE drag and drop

Hi Jürgen,

I tried your command, but on my computer the configure script stops with 
an error

checking for tt_c.h... yes
checking for tt_message_create in -ltt... no
checking for tt_message_create in -ltt... (cached) no
checking for tt_message_create in -ltt... (cached) no
./configure: Usage error:
   Unable to find required tooltalk libraries.

So the bug in the detection of tt_c.h is addressed, but the next bug in 
detection of libtt

is triggered: the configure script does not include the X libraries 
after -ltt

After changing

LIBS="-ltt $extra_libs $LIBS"

to

LIBS=" -L/usr/dt/lib -ltt -lXmu -lXt -lXext -lX11   -lSM -lICE -ltirpc 
$extra_libs $LIBS"

the configure script proceeds. The command I used was

LDFLAGS="-L/usr/dt/lib" CPPFLAGS="-I/usr/dt/include/Tt -I/usr/dt/include 
-I/usr/include/tirpc" ./configure --with-dragndrop --with-cde 
--with-tooltalk

I have found that it was necessary to add --with-dragndrop to enable CDE 
drag and drop.

Now that I have a Makefile, I will check if the build succeeds.

Thanks for your suggestion,

Best

Edmond


Le 16/12/2025 à 12:55, Jürgen Mayerhofer a écrit :
> Hi Edmond,
>
> I was successful in building xemacs with:
>
> CPPFLAGS="-I/usr/dt/include/Tt -I/usr/dt/include -I/usr/include/tirpc" 
> ./configure --with-cde
>
> But I was not successful to get any drag and drop features in it.
>
> The command above builds emacs without motif on my system, instead Xaw 
> is used.
>
> If you want motif: use --with-widgets=motif
>
> But this gives me tons of GC errors and wron colors in menus... :-(
>
> Best regards,
>
>  Jürgen.
>
>
>
> Am 13.12.25 um 21:53 schrieb Edmond Orignac via cdesktopenv-devel:
>> This is only tangentially related with CDE development, but I have 
>> tried to
>>
>> build XEmacs from
>>
>> https://foss.heptapod.net/xemacs/xemacs/-/tree/branch/default
>>
>> with CDE drag and drop. I am using CDE 2.5.3 on Ubuntu 22.04.
>>
>> The configure script fails to find /usr/dt/include/Tt/tt_c.h
>>
>> I would like to know if other CDE users have tried to build XEmacs 
>> with CDE Drag and Drop with different Linux distributions or the BSDs 
>> or OpenIndiana and if they have been successful.
>>
>> Below some details of what I have tried.
>>
>> I have first used ./configure --with-cde  without success.
>>
>> I have then tried various options
>>
>> ./configure 
>> --with-site-includes=/usr/dt/include/Dt/:/usr/dt/include/Tt/ 
>> --with-site-libraries=/usr/dt/lib/  --with-cde
>>
>> ./configure  --with-site-includes=/usr/dt/include/ --with-dragndrop 
>> --with-cde --with-tooltalk
>>
>> ./configure --with-site-prefixes=/usr:/usr/dt 
>> --with-site-includes=/usr/dt/include/Tt/  --with-dragndrop --with-cde 
>> --with-tooltalk
>>
>> ./configure --with-widgets=motif --with-cde 
>> --with-site-prefixes=/usr/dt 
>> --x-includes=/usr/include/X11/:/usr/dt/include/
>>
>> The configure script always stopped with
>>
>> checking for tt_c.h... no
>> checking for Tt/tt_c.h... no
>> checking for desktop/tt_c.h... no
>> ./configure: Usage error:
>>   Unable to find required tooltalk header files.
>>   Use `./configure --help' to show usage.
>>
>> The lines in the script that attempt to find tooltalk header files are:
>>
>> if test "$with_tooltalk" != "no" ; then
>>        for dir in "" "Tt/" "desktop/" ; do
>>      as_ac_Header=`printf "%s\n" "ac_cv_header_${dir}tt_c.h" | 
>> $as_tr_sh`
>> ac_fn_c_check_header_compile "$LINENO" "${dir}tt_c.h" "$as_ac_Header" 
>> "$ac_includes_default"
>> if eval test \"x\$"$as_ac_Header"\" = x"yes"
>> then :
>>    tt_c_h_file="${dir}tt_c.h"; break
>> fi
>>
>>    done
>>    if test -z "$tt_c_h_file"; then
>>      if test "$with_tooltalk" = "yes"; then
>>        (echo "$progname: Usage error:"
>> echo " " "Unable to find required tooltalk header files."
>> echo "  Use \`$progname --help' to show usage.") >&2 && exit 1
>>      fi
>>
>> I have tried to replace in the configure script
>>
>> for dir in "" "Tt/" "desktop/" ; do
>>
>> with for dir in "/usr/dt/include/" "/usr/dt/include/Tt/" 
>> "/usr/share/dt/include/Tt" ; do
>>
>> but the error was unchanged with
>>
>> checking for /usr/dt/include/tt_c.h... no
>> checking for /usr/dt/include/Tt/tt_c.h... no
>> checking for /usr/share/dt/include/Tt/tt_c.h... no
>>
>> I assume the configure script that ships with XEmacs has a bug in 
>> ac_fn_c_check_header_compile, but it might also be a problem specific 
>> to Ubuntu.
>>
>>
>>
>>
>> _______________________________________________
>> cdesktopenv-devel mailing list
>> cde...@li...
>> https://lists.sourceforge.net/lists/listinfo/cdesktopenv-devel
>