July 2016 - WLUG - wlug.mailman3.com

Re: [Wlug] Linker error: DSO missing from command line

by John Stoffel

>>>>> "Andy" == Andy Stewart <kb1oiq(a)mval.net> writes: Andy> On 07/16/2016 04:48 PM, John Stoffel wrote: >> John> So what if you just putt the following into the src/Makefile.am file: >> John> AM_LDFLAGS = \ John> -lm >> >> John> I put it after the AM_CPPFLAGS definition up top. Seemed to do what I John> needed, but I haven't setup an Ubuntu 16.04 test VM yet to confirm. >> >> So I spun up a droplet on Digital Oceon running Ubuntu 16.04 and with >> the above change, and the following steps, I got it to compile.... >> >> >> # apt-get update >> # apt-get install gcc libhamlib-dev make libgtk-dev libgtkextra-dev libglib2.0-dev libgtk2.0-dev >> # wget http://download.savannah.gnu.org/releases/xlog/xlog-2.0.14beta.tar.gz >> # tar xzf xlog-2.0.14beta.tar.gz >> # cd xlog-2.0.14beta/ >> # vi src/Makefile.am >> >> - added in AM_LDFLAGS = -lm >> >> # ./configure >> # make >> >> and it did it. I'd like to say I'm really impressed at how there are >> NO compile warnings at all. Nice clean coding! >> >> But if you could get more detailed error messages from those reporting >> problems compiling, that would be a big help as well. >> >> Thanks, >> John Andy> HI John, Andy> When I took over this code base, I attacked the compile Andy> warnings. I recall also passing a switch that says "warnings Andy> are errors", in order to keep the code clean. I like that standard! Andy> Regargind "AM_LDFLAGS -lm", I'd swear I did that and it didn't work for Andy> me, so I tried again. Andy> After adding AM_LDFLAGS to Makefile.am, I assume you ran Andy> automake or perhaps "automake -a". Umm... I think I just did that the first time, then I blew it all away (xlog that is) and re-extracted it, modified the src/Makefile.am file and did the build. Andy> I tried it on my Ubuntu 16.04 and it did not work. It seems Andy> like your solution is the right one. Let me try blowing away my Andy> Ubuntu 16.04 in Virtualbox, in case something was corrupted, and Andy> I'll repeat the steps you listed above on a pristine Ubuntu Andy> 16.04. Post the errors and/or compile log so we can look at this. I don't think you need to blow away your Ubuntu VM at all, just do a fresh from scratch extract and patch of xlog instead.

July 18, 2016

Re: [Wlug] Linker error: DSO missing from command line

by Andy Stewart

On 07/16/2016 04:48 PM, John Stoffel wrote: > > John> So what if you just putt the following into the src/Makefile.am file: > > John> AM_LDFLAGS = \ > John> -lm > > > John> I put it after the AM_CPPFLAGS definition up top. Seemed to do what I > John> needed, but I haven't setup an Ubuntu 16.04 test VM yet to confirm. > > So I spun up a droplet on Digital Oceon running Ubuntu 16.04 and with > the above change, and the following steps, I got it to compile.... > > > # apt-get update > # apt-get install gcc libhamlib-dev make libgtk-dev libgtkextra-dev libglib2.0-dev libgtk2.0-dev > # wget http://download.savannah.gnu.org/releases/xlog/xlog-2.0.14beta.tar.gz > # tar xzf xlog-2.0.14beta.tar.gz > # cd xlog-2.0.14beta/ > # vi src/Makefile.am > > - added in AM_LDFLAGS = -lm > > # ./configure > # make > > and it did it. I'd like to say I'm really impressed at how there are > NO compile warnings at all. Nice clean coding! > > But if you could get more detailed error messages from those reporting > problems compiling, that would be a big help as well. > > Thanks, > John HI John, When I took over this code base, I attacked the compile warnings. I recall also passing a switch that says "warnings are errors", in order to keep the code clean. Regargind "AM_LDFLAGS -lm", I'd swear I did that and it didn't work for me, so I tried again. After adding AM_LDFLAGS to Makefile.am, I assume you ran automake or perhaps "automake -a". I tried it on my Ubuntu 16.04 and it did not work. It seems like your solution is the right one. Let me try blowing away my Ubuntu 16.04 in Virtualbox, in case something was corrupted, and I'll repeat the steps you listed above on a pristine Ubuntu 16.04. I'll let you know my result. Thanks!! Andy > > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

July 17, 2016

Re: [Wlug] Linker error: DSO missing from command line

by John Stoffel

John> So what if you just putt the following into the src/Makefile.am file: John> AM_LDFLAGS = \ John> -lm John> I put it after the AM_CPPFLAGS definition up top. Seemed to do what I John> needed, but I haven't setup an Ubuntu 16.04 test VM yet to confirm. So I spun up a droplet on Digital Oceon running Ubuntu 16.04 and with the above change, and the following steps, I got it to compile.... # apt-get update # apt-get install gcc libhamlib-dev make libgtk-dev libgtkextra-dev libglib2.0-dev libgtk2.0-dev # wget http://download.savannah.gnu.org/releases/xlog/xlog-2.0.14beta.tar.gz # tar xzf xlog-2.0.14beta.tar.gz # cd xlog-2.0.14beta/ # vi src/Makefile.am - added in AM_LDFLAGS = -lm # ./configure # make and it did it. I'd like to say I'm really impressed at how there are NO compile warnings at all. Nice clean coding! But if you could get more detailed error messages from those reporting problems compiling, that would be a big help as well. Thanks, John

July 16, 2016

Re: [Wlug] Linker error: DSO missing from command line

by John Stoffel

Andy, So what if you just putt the following into the src/Makefile.am file: AM_LDFLAGS = \ -lm I put it after the AM_CPPFLAGS definition up top. Seemed to do what I needed, but I haven't setup an Ubuntu 16.04 test VM yet to confirm. John

July 16, 2016

Re: [Wlug] Linker error: DSO missing from command line

by John Stoffel

>>>>> "Andy" == Andy Stewart <kb1oiq(a)mval.net> writes: Andy> On 07/15/2016 10:44 AM, John Stoffel wrote: >> >> Do you have git repository with this available so I can try playing >> with it at as well? I spent some time on getting autoconf working >> with duc (http://github.com/zevv/duc) so I might be able to help. >> >> John Andy> I don't have a git repository, but one can download the source Andy> tarball: Andy> http://download.savannah.gnu.org/releases/xlog/xlog-2.0.14beta.tar.gz Ok, I've pulled it down and started to play with it. We'll see how far I get. :-) Busy with a bunch of stuff today and tomorrow, so it might be a few days...

July 16, 2016

Re: [Wlug] Linker error: DSO missing from command line

by Andy Stewart

On 07/15/2016 10:44 AM, John Stoffel wrote: > > Do you have git repository with this available so I can try playing > with it at as well? I spent some time on getting autoconf working > with duc (http://github.com/zevv/duc) so I might be able to help. > > John Hi John, I don't have a git repository, but one can download the source tarball: http://download.savannah.gnu.org/releases/xlog/xlog-2.0.14beta.tar.gz Thanks, Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

July 15, 2016

Re: [Wlug] Linker error: DSO missing from command line

by John Stoffel

>>>>> "Andy" == Andy Stewart <kb1oiq(a)mval.net> writes: Andy> I have received a few reports indicating that xlog will not Andy> compile without error from the source tarball. Since I'm the Andy> xlog maintainer, I get to fix it, but so far, I've been Andy> unsuccessful. Andy> The error looks like this, and I've easily reproduced it on Ubuntu 16.04 Andy> LTS: Andy> /usr/bin/ld: gui_gtkprintdialog.o: undefined reference to symbol Andy> 'trunc@@GLIBC_2.2.5' Andy> //lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from Andy> command line Andy> I've traced this to recently modified behavior of gcc, where all Andy> libraries needed to properly link the executable must be Andy> included on the command line. In this case, "-lm" is not Andy> explicitly on the command line, and thus the error. Interesting. Have you been running 'autoreconf -force' after each time you make a change, esp in the .ac and .am files? I've found that sometimes it doesn't quite do what I expect. Andy> I have succeeded in making it work in this way, but it is just a workaround: Andy> ./configure LIBS="-lm" Andy> make Andy> make install Andy> It seems that automake 1.15 is needed to help get around this issue, and Andy> that version is part of Ubuntu 16.04. Andy> However, I'm stuck, trying to figure out the "right way" to fix this. Andy> I've googled for a couple of hours, trying to figure out what needs to Andy> go into configure.ac and/or Makefile.am, to no avail. Andy> I tried this in configure.ac: LT_LIB_M Andy> (nope) Andy> I tried this in Makefile.am: LIBS=-lm Andy> (nope) Andy> I also tried this in Makefile.am: LDFLAGS = -lm Andy> (nope) Andy> In each case, I reran autoconf, automake, and then ./configure, but the Andy> linker error persists. Andy> I must be missing something easy. Any helpful hints would surely be Andy> appreciated. Do you have git repository with this available so I can try playing with it at as well? I spent some time on getting autoconf working with duc (http://github.com/zevv/duc) so I might be able to help. John

July 15, 2016

HT Receiver

by Gary Hanley

Hello folks, I hope I'm not breaking protocol for posting this but I'm replacing my home theater receiver and looking to sell my current unit so I thought I would offer it here. I think it's a good deal for anyone who doesn't need the very latest HT specs. I bought it new for $1100 when it was first made available about three years plus ago and it works as good as the day it was purchased. It's a Yamaha RX-A1020 and the product page can be found here: http://usa.yamaha.com/products/audio-visual/aventage/rx-a1020_black_u/ As I type this there are new models on eBay for $699 and a used model for $550. I'm asking $500. The unit is still attached to my HT system so I can demo it for anyone who might be interested. Thanks everyone.

July 15, 2016

Linker error: DSO missing from command line

by Andy Stewart

Hi Everybody, I have received a few reports indicating that xlog will not compile without error from the source tarball. Since I'm the xlog maintainer, I get to fix it, but so far, I've been unsuccessful. The error looks like this, and I've easily reproduced it on Ubuntu 16.04 LTS: /usr/bin/ld: gui_gtkprintdialog.o: undefined reference to symbol 'trunc@@GLIBC_2.2.5' //lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from command line I've traced this to recently modified behavior of gcc, where all libraries needed to properly link the executable must be included on the command line. In this case, "-lm" is not explicitly on the command line, and thus the error. I have succeeded in making it work in this way, but it is just a workaround: ./configure LIBS="-lm" make make install It seems that automake 1.15 is needed to help get around this issue, and that version is part of Ubuntu 16.04. However, I'm stuck, trying to figure out the "right way" to fix this. I've googled for a couple of hours, trying to figure out what needs to go into configure.ac and/or Makefile.am, to no avail. I tried this in configure.ac: LT_LIB_M (nope) I tried this in Makefile.am: LIBS=-lm (nope) I also tried this in Makefile.am: LDFLAGS = -lm (nope) In each case, I reran autoconf, automake, and then ./configure, but the linker error persists. I must be missing something easy. Any helpful hints would surely be appreciated. Thanks, and 73, Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

July 15, 2016

Re: [Wlug] Reminder: Meeting July 14th, 2016. Topic: SCM with Git and Gitlab!

by Tim Keller

Yup! Back in the round room of slider rule doom! On Thu, Jul 14, 2016 at 2:03 PM, Keith Wright <kwright(a)keithdiane.us> wrote: > Tim Keller <turbofx(a)gmail.com> writes: > > > Hey Everybody! > > > > This is a reminder we've got a WLUG meeting on July 14th! > > And this is another, I'll be leaving here soon. > > > > When: July 14th, 2016 @ 7pm > > Where: WPI Mid Century room rm 331 > > I'm assuming this is back in the second floor > of the Student Center, I forget the official > name. > > -- Keith > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

July 14, 2016