Errors compiling t38modem

Albrecht V — Mon, 25 Oct 2021 20:13:13 -0000

I'm trying to get the T38modem to work, but am unsuccessful thusfar.
I'm using the following packages:

PTLib 2.10.15
https://github.com/T38Modem/ptlib/archive/refs/tags/v2.10.15.tar.gz

Opal 3.10.15
https://github.com/T38Modem/opal/archive/refs/tags/v3.10.15.tar.gz

T38modem 3.15.3
https://sourceforge.net/p/t38modem/discussion/508603/thread/e5a314251c/13a9/1697/attachment/t38modem.tgz

I start with PTLib:
cd ptlib-2.10.15
./configure
make
I then get the following errors:
make[2]: [../make/common.mak:97: /home/user/ptlib-2.10.15/lib_linux_x86_64/obj/svcproc.o] Error 1
make[2]: Leaving directory '/home/user/ptlib-2.10.15/src'
make[1]: [../make/common.mak:292: optshared] Error 2
make[1]: Leaving directory '/home/user/ptlib-2.10.15/src'
make: *** [Makefile:91: optshared] Error 2

I try "make install" after this, and he seems to get through this, without new error messages.

Then I try to install Opal:
cd opal-3.10.15
./configure CXXFLAGS='-std=gnu++98'
message: checking linkable PTLib... not found
make
message: make: *** No targets specified and no makefile found. Stop.

I've been trying for days, with different packages/github pages.

Does someone know what I'm doing wrong? Can you point me in the right direction?

Thanks in advance!

Compiling on aarch64

Matteo — Tue, 18 May 2021 16:07:11 -0000

Hello, there is a way to compile t38modem on aarch64? The hardware is Odroid C2 and C4.

Errors compiling t38modem

DrO — Sun, 19 Jan 2020 15:50:49 -0000

I tried the to build/install the .tgz in the attachment above under MinGW/GCC 7.3, using the build steps as stated (after applying the patch).

PTLib .configure'd, but the Make step crashed on "undefined reference to PPlugin_PVideoOutputDevice_Window_link()", though I suspect if it continued it would have crashed on other "PPlugin ..." bits that appear in the *.dtf MSVC files.

... PVideoOutputDevice seems to be an OPAL element, so not sure if I got the build order wrong.

1) Should that happen? I am using MinGW/Linux install process (not MSVC), and so why is it referencing Win based files?

2) The PTLib here is stated 2.10.15 dated 2020, but on online the highest ver is 2.10.11 from 2015 ... is that significant?

3) It's not clear if bison of flex are/are not required.

4) Not sure how this version of T38Modem should be treated in relation to the 2.0 version more commonly available. Should I be sticking with 2.0?

5) Would it make sense to provide a refresh/updated summary page as to the current statuts, dependencies, version control, etc, and a more or less bullet proof build mechanism?

Many thanks

Errors compiling t38modem

Bartosz Supcziński — Thu, 09 Jan 2020 01:54:02 -0000

Repaired and tested on Ubuntu 18.04.3

T38modem:
No changes required

OPAL compile:
./configure CXXFLAGS='-std=gnu++98'

PTlib patches:

--- svcproc.cxx 2020-01-09 02:33:42.363332334 +0100
+++ svcproc.cxx_patch   2020-01-08 15:16:34.346921577 +0100
@@ -217,7 +217,7 @@
     pid_t pid;

     {
-      ifstream pidfile(pidfilename);
+      ifstream pidfile((const char *)pidfilename);
       if (!pidfile.is_open()) {
         cout << "Could not open pid file: \"" << pidfilename << "\""
                 " - " << strerror(errno) << endl;
@@ -384,7 +384,7 @@
   // Run as a daemon, ie fork

   if (!pidfilename) {
-    ifstream pidfile(pidfilename);
+    ifstream pidfile((const char *)pidfilename);
     if (pidfile.is_open()) {
       pid_t pid;
       pidfile >> pid;
@@ -412,7 +412,7 @@
       cout << "Daemon started with pid " << pid << endl;
       if (!pidfilename) {
         // Write out the child pid to magic file in /var/run (at least for linux)
-        ofstream pidfile(pidfilename);
+        ofstream pidfile((const char *)pidfilename);
         if (pidfile.is_open())
           pidfile << pid;
         else


--- channel.cxx 2020-01-09 02:33:42.355332257 +0100
+++ channel.cxx_patch   2020-01-08 15:35:42.461901748 +0100
@@ -34,6 +34,7 @@
 #pragma implementation "channel.h"
 #pragma implementation "indchan.h"

+#include <sys/uio.h>
 #include <ptlib.h>
 #include <sys/ioctl.h>

Errors compiling t38modem

Jeremy Walker — Wed, 09 Oct 2019 19:08:18 -0000

BUMP

The silence is deafening!

Errors compiling t38modem

Jeremy Walker — Wed, 09 Oct 2019 11:07:36 -0000

I started the whole process again with a fresh Ubuntu 18.04.3 LTS server, this time downloading the sources from:

https://github.com/PeteDavidson/ptlib
https://github.com/PeteDavidson/opal
https://github.com/PeteDavidson/t38modem

After installing dependencies,

$ apt install build-essential flex bison libexpat1-dev libgsm1-dev libspeex-dev libopus-dev libavcodec-dev libx264-dev libvpx-dev libtheora-dev libspandsp-dev capiutils dahdi

I extracted ptlib-master.zip to /usr/src, then ran

$ ./configure
$ make

I get a bunch of warnings, followed by:

ptlib/unix/svcproc.cxx: In member function ‘int PServiceProcess::InitialiseService()’:
ptlib/unix/svcproc.cxx:220:35: error: call of overloaded ‘basic_ifstream(PString&)’ is ambiguous
       ifstream pidfile(pidfilename);
                                   ^
In file included from ptlib/unix/svcproc.cxx:57:0:
/usr/include/c++/7/fstream:511:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ifstream(const std::string& __s,
       ^~~~~~~~~~~~~~
/usr/include/c++/7/fstream:495:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::io
s_base::openmode = std::_Ios_Openmode]
       basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
       ^~~~~~~~~~~~~~
ptlib/unix/svcproc.cxx:387:33: error: call of overloaded ‘basic_ifstream(PString&)’ is ambiguous
     ifstream pidfile(pidfilename);
                                 ^
In file included from ptlib/unix/svcproc.cxx:57:0:
/usr/include/c++/7/fstream:511:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ifstream(const std::string& __s,
       ^~~~~~~~~~~~~~
/usr/include/c++/7/fstream:495:7: note: candidate: std::basic_ifstream<_CharT, _Traits>::basic_ifstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
       ^~~~~~~~~~~~~~
ptlib/unix/svcproc.cxx:415:37: error: call of overloaded ‘basic_ofstream(PString&)’ is ambiguous
         ofstream pidfile(pidfilename);
                                     ^
In file included from ptlib/unix/svcproc.cxx:57:0:
/usr/include/c++/7/fstream:715:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const string&, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::__cxx11::string = std::__cxx11::basic_string<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ofstream(const std::string& __s,
       ^~~~~~~~~~~~~~
/usr/include/c++/7/fstream:697:7: note: candidate: std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const char*, std::ios_base::openmode) [with _CharT = char; _Traits = std::char_traits<char>; std::ios_base::openmode = std::_Ios_Openmode]
       basic_ofstream(const char* __s,
       ^~~~~~~~~~~~~~
ptlib/unix/svcproc.cxx:353:12: warning: ignoring return value of ‘int seteuid(__uid_t)’, declared with attribute warn_unused_result [-Wunused-result]
     seteuid(getuid()); // Switch back to starting uid for next call
     ~~~~~~~^~~~~~~~~~
ptlib/unix/svcproc.cxx:355:12: warning: ignoring return value of ‘int seteuid(__uid_t)’, declared with attribute warn_unused_result [-Wunused-result]
     seteuid(uid);
     ~~~~~~~^~~~~
ptlib/unix/svcproc.cxx:366:14: warning: ignoring return value of ‘int seteuid(__uid_t)’, declared with attribute warn_unused_result [-Wunused-result]
       seteuid(getuid()); // Switch back to starting uid for next call
ptlib/unix/svcproc.cxx:375:14: warning: ignoring return value of ‘int seteuid(__uid_t)’, declared with attribute warn_unused_result [-Wunused-result]
       seteuid(uid);
       ~~~~~~~^~~~~
../make/common.mak:96: recipe for target '/usr/src/ptlib-master/lib_linux_x86_64/obj/svcproc.o' failed
make[2]: *** [/usr/src/ptlib-master/lib_linux_x86_64/obj/svcproc.o] Error 1
make[2]: Leaving directory '/usr/src/ptlib-master/src'
../make/common.mak:292: recipe for target 'optshared' failed
make[1]: *** [optshared] Error 2 
make[1]: Leaving directory '/usr/src/ptlib-master/src'
Makefile:91: recipe for target 'optshared' failed
make: *** [optshared] Error 2

Any help would be greatly appreciated.

thanks -Jeremy

Errors compiling t38modem

Kill Bill — Tue, 08 Oct 2019 16:43:20 -0000

Hi,

I am trying to compile the latest t38modem from https://github.com/PeteDavidson/t38modem, but I'm running into some trouble. Here are the steps I've followed so far:

OS
A clean Ubuntu 18.04.3 LTS Server image.

Installed dependencies

build-essential flex bison libexpat1-dev libgsm1-dev libspeex-dev libopus-dev libavcodec-dev libx264-dev libvpx-dev libtheora-dev libspandsp-dev capiutils dahdi

Built PTLIB & OPAL
Downloaded sources for ptlib-2.16.2 and opal-3.16.2 from https://sourceforge.net/projects/opalvoip/files/V3.16%20Procyon/Stable%202/ and successfully compiled both libraries.

T38Modem
Downloaded sourcecode from https://github.com/PeteDavidson/t38modem. Followed instructions in ReadMe.txt, i.e.

$ export PTLIBDIR=/usr/local/lib/ptlib-2.16.2
$ export OPALDIR=/usr/local/lib/opal-3.16.2
$ make USE_OPAL=1 opt

The last command throws following error:

make: *** No rule to make target 'opt'.  Stop.

So I ran just make USE_OPAL=1, and that throws the following errors:

g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o pmutils.o pmutils.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o dle.o dle.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o pmodem.o pmodem.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o pmodemi.o pmodemi.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o drivers.o drivers.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o t30.o t30.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o hdlc.o hdlc.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o fcs.o fcs.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o pmodeme.o pmodeme.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o enginebase.o enginebase.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o t38engine.o t38engine.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o drv_pty.o drv_pty.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o opal/opalutils.o opal/opalutils.cxx
g++ -c  `pkg-config --cflags opal` -DUSE_UNIX98_PTY -o opal/modemep.o opal/modemep.cxx
opal/modemep.cxx: In member function ‘virtual PSafePtr<OpalConnection> ModemEndPoint::MakeConnection(OpalCall&, const PString&, void*, unsigned int, OpalConnection::StringOptions*)’:
opal/modemep.cxx:409:10: error: ‘m_connectionsActive’ was not declared in this scope
opal/modemep.cxx:409:10: note: suggested alternative: ‘connectionsActive’
opal/modemep.cxx: In member function ‘virtual PBoolean ModemConnection::SetUpConnection()’:
opal/modemep.cxx:461:10: error: ‘m_remotePartyNumber’ was not declared in this scope
opal/modemep.cxx:461:10: note: suggested alternative: ‘remotePartyNumber’
opal/modemep.cxx: In constructor ‘ModemConnection::ModemConnection(OpalCall&, ModemEndPoint&, const PString&, void*, bool, bool, OpalConnection::StringOptions*)’:
opal/modemep.cxx:580:3: error: ‘m_remotePartyNumber’ was not declared in this scope
opal/modemep.cxx:580:3: note: suggested alternative: ‘remotePartyNumber’
opal/modemep.cxx: In destructor ‘virtual ModemConnection::~ModemConnection()’:
opal/modemep.cxx:620:45: error: ‘m_remotePartyNumber’ was not declared in this scope
opal/modemep.cxx:620:45: note: suggested alternative: ‘remotePartyNumber’
Makefile:116: recipe for target 'opal/modemep.o' failed
make: *** [opal/modemep.o] Error 1

Can anyone point me in the right direction? What am I missing here?

thanks,
-Jeremy

t38modem 3.15.3 segfault error

Crises — Tue, 28 May 2019 06:24:31 -0000

The problem continues...

I tried changing the machine, but the same error.

I'm using Red Hat Enterprise Linux Server 7.4 (Maipo)
with kernel 3.10.0-693.el7.x86_64

This problem was tonight:

May 28 00:09:45 iv4tl0200 kernel: t38modem[9396]: segfault at 7f0ddc00f440 ip 00007f0ddc00f440 sp 00007f0dc3b6cd58 error 15

t38modem 3.15.3 segfault error

Crises — Mon, 15 Apr 2019 06:57:20 -0000

Hi,

I have a server Hylafax+ t38modem with this version:

T38Modem Version 3.15.3,
OPAL-3.10.15/3.10.15 (svn:30298),
PTLIB-2.10.15/2.10.15

Worked without problems during weeks, but the last night:

kernel: t38modem[24338]: segfault at 7feab400e9b0 ip 00007feab400e9b0 sp 00007fea8c1d5db8 error 15
kernel: t38modem[17831]: segfault at 0 ip (null) sp 00007f6642092db8 error 14 in t38modem[400000+6c000]

Why this happened after a good work?

How to send a file from my computer to someone elses fax machine

Andrew — Wed, 27 Mar 2019 20:56:53 -0000

I don't understand:
1. what this software does (yes, I read the description, it did not help much.)
2. what are the requirements to use this software?
3. Is hylafax required or optional?
4. Is a phone line required?
5. Is a fax machine, modem or other hardware required?
6. on which side of the connection if hardware is required; sender or receiver?

I'm looking for software that will let me send a file from my computer to someone elses fax machine over the Internet. My ISP provides me with VOIP - I plug my telephone in to the cable modem/router and I get phone service.

Is that this software or does anyone know of another project that will satisfy my need?

Thank you!

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