SerialPort error

I have a perl script that complains about not being able to find
Device/SerialPort.pm. I therefore tried to get it from the CPAN
repository; at the perl -MCPAN shell command line I typed

install Device::SerialPort

The code is downloaded and apparently built successfully, but on running
the tests I get the following:

running make test
PERL_DL_NONLAZY=1 /usr/bin/perl5.8.8 "-MExtUtils::Command::MM" "-e"
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/01timing....ok
t/test1.......ok 1/0# Using '/dev/ttyS1' as test
port.
can't getattr: Input/output error at t/test1.t line 121
t/test1.......NOK
21
# Failed test in t/test1.t at line 121.

7: could not open port '/dev/ttyS1'. Are permissions correct?
# Looks like you failed 1 test of 21.
# Looks like your test died just after 21.
t/
test1.......dubious
Test returned status 255 (wstat 65280, 0xff00)
DIED. FAILED test 21
Failed 1/21 tests, 95.24% okay
t/test2.......ok 1/46can't open file: ttyS1_test.cfg: No such file or
directory at t/test2.t line 90
t/
test2.......dubious
Test returned status 1 (wstat 256, 0x100)
DIED. FAILED tests 2-46
Failed 45/46 tests, 2.17% okay
t/test3.......ok 1/159can't getattr: Input/output error at t/test3.t line
150
t/
test3.......dubious
Test returned status 1 (wstat 256, 0x100)
DIED. FAILED tests 7-159
Failed 153/159 tests, 3.77% okay
t/test4.......ok 1/341can't open file: ttyS1_test.cfg: No such file or
directory at t/test4.t line 92
t/
test4.......dubious
Test returned status 1 (wstat 256, 0x100)
DIED. FAILED tests 2-341
Failed 340/341 tests, 0.29% okay
Failed Test Stat Wstat Total Fail Failed List of Failed
------------------------------------------------------------ -------------------
t/test1.t 255 65280 21 1 4.76% 21
t/test2.t 1 256 46 89 193.48% 2-46
t/test3.t 1 256 159 305 191.82% 7-159
t/test4.t 1 256 341 679 199.12% 2-341
Failed 4/5 test scripts, 20.00% okay. 539/574 subtests failed, 6.10% okay.
make: *** [test_dynamic] Error 1
/usr/bin/make test -- NOT OK
Running make install
make test had returned bad status, won't install without force

How do I get around this? I was attempting to install this module
as superuser; I don't think that permissions are an issue. Also, why is
it attempting to mess with /dev/ttyS1? I have just one serial port, which
is likely to be /dev/ttyS0.

Suggestions will be very welcome.

Re: SerialPort error

H.K. Kingston-Smith wrote:
> I have a perl script that complains about not being able to find
> Device/SerialPort.pm. I therefore tried to get it from the CPAN
> repository; at the perl -MCPAN shell command line I typed

> install Device::SerialPort

> The code is downloaded and apparently built successfully, but on running
> the tests I get the following:

> running make test
> PERL_DL_NONLAZY=1 /usr/bin/perl5.8.8 "-MExtUtils::Command::MM" "-e"
> "test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
> t/01timing....ok
> t/test1.......ok 1/0# Using '/dev/ttyS1' as test
> port.
> can't getattr: Input/output error at t/test1.t line 121
> t/test1.......NOK
> 21
> # Failed test in t/test1.t at line 121.

> 7: could not open port '/dev/ttyS1'. Are permissions correct?
> # Looks like you failed 1 test of 21.
>
> How do I get around this? I was attempting to install this module
> as superuser; I don't think that permissions are an issue. Also, why is
> it attempting to mess with /dev/ttyS1? I have just one serial port, which
> is likely to be /dev/ttyS0.

See the README file for the module:

http://search.cpan.org/src/COOK/Device-SerialPort-1.002001/R EADME

Run 'perl Makefile.PL' followed by 'make'. This will create install
files and directories. Run 'make test' with nothing connected to
"/dev/ttyS1". This will run the tests and create a configuration
file. You can specify a different port to test via
'perl Makefile.PL TESTPORT='. Makefile.PL creates
"t/DefaultPort.pm". You can also specify an alternate port with the
Shell Variable "Makefile_Test_Port".

I don't know if it was a wise decision by the author to use
/dev/ttyS1 for testing, but that's the way it is. I don't know
if it's possible to set a different test port for the CPAN
install, the simplest approach may be to download the module
from

http://search.cpan.org/src/COOK/Device-SerialPort-1.002001/S erialPort.pm

and then, after unpacking, do

perl Makefile.PL TESTPORT=/dev/ttyS0
make
make test
make install

Of course, do the last step only if the tests don't fail;-)

Regards, Jens
--
\ Jens Thoms Toerring ___ jt@toerring.de
\__________________________ http://toerring.de