Alan, Thanks
Phil (I am CC you here, because this is a wxdriver issue;
not saying that is a bug in the wxdriver, just a code error I have in my use
of it )
The issue was not lack of -g, but just a code issue
I am following almost verbatim the demo wxPLplotDemo.cpp
what happens in my code is that
pls is NULL
here
void Plot(wxPLplotwindow<WXWINDOW> *plotwindow)
{
wxPLplotstream* pls = plotwindow->GetStream();
so all pls-> calls seg fault
what happens is that this function is *not* called
void wxPLplotwindow<WXWINDOW>::OnCreate( wxWindowCreateEvent &event )
{
if ( !m_created )
and it should have been in these calls
wxPLplotwindow<wxFrame> *frame = new wxPLplotwindow<wxFrame>();
frame->Create(NULL, wxID_ANY, wxT("wxPLplotDemo"));
frame->Show();
Plot(frame);
This only happens in Linux, on Windows all is fine
so, I'll keep on debugging to see what is happening
by the way, since I am here, I have 2 small requests:
1) the wxdriver compilation has a couple of compiler warnings, would it be
possible to eliminate them ?
2) would it be possible to keep in the upcoming version the old deprecated
wxdriver code that is not templated ?
I find templated code difficult to follow and debug, and here there is no
benefit in using it , because all my plots are in wxFrame
these are the warnings
M:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(181): warning C4100: 'event':
unreferenced formal parameter (compiling source file wx_explorer_star.cpp)
M:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(182): note: while compiling
class template member function 'void
wx_PLplotwindow<wxFramePlot>::OnCreate(wxWindowCreateEvent &)' (compiling
source file wx_explorer_star.cpp)
wx_explorer_star.cpp(860): note: see reference to class template
instantiation 'wx_PLplotwindow<wxFramePlot>' being compiled
m:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(278): warning C4701:
potentially uninitialized local variable 'drawDc' used
m:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(278): warning C4703:
potentially uninitialized local pointer variable 'drawDc' used
for the first you can use the
WXUNUSED
macro
like in
void wxFrameClient::OnQuit(wxCommandEvent& WXUNUSED(eve))
the others seem that you should see
m:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(278): warning C4701:
potentially uninitialized local variable 'drawDc' used
m:\star_icvs\tools\wx_lib\wx_plplotwindow.hpp(278): warning C4703:
potentially uninitialized local pointer variable 'drawDc' used
it says that the variables are not initialized and are potencially used
-Pedro
----- Original Message -----
From: "Alan W. Irwin" <[email protected]>
To: "Pedro Vicente" <[email protected]>
Cc: <[email protected]>
Sent: Thursday, December 08, 2016 1:59 PM
Subject: Re: [Plplot-devel] build PLPlot with debug symbols in linux / cmake
> On 2016-12-08 01:52-0500 Pedro Vicente wrote:
>
>>
>> Hi Alan
>>
>> I have a wxWidgets application that I developed for Windows and Linux
>> that uses PLplot .
>>
>> I started having a segfault on the *Linux* only version.
>>
>> Debugging in Windows is a breeze with Visual Studio.
>>
>> For Linux I was able to make a QtCreator project to debug (yes, Qt
>> debugging wxWidgets !)
>>
>> However when I try to step into the PLplot code, there is no step into,
>> because probably debugging symbols were not built
>>
>> I used the following cmake call
>>
>> cmake .. -G "Unix
>> Makefiles" -DBUILD_SHARED_LIBS:BOOL=OFF -DENABLE_f95:BOOL=OFF
>> -DENABLE_tcl:BOOL=OFF
>> -DENABLE_tk:BOOL=OFF
>> -DCMAKE_INSTALL_PREFIX:PATH=/data/data127/pvicente/install/plplot-5.11.1
>> -DPL_HAVE_PTHREAD:BOOL=OFF -DPLD_xwin:BOOL=OFF -DPLD_wxwidgets:BOOL=ON
>> -DwxWidgets_ROOT_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0
>> -DwxWidgets_LIB_DIR:PATH=/data/data127/pvicente/install/wxwidgets-3.1.0/lib
>> -DwxWidgets_CONFIGURATION=mswud -DENABLE_MIX_CXX=ON
>> -DwxWidgets_EXCLUDE_COMMON_LIBRARIES:BOOL=OFF>>>>>> this is more probably a
>> cmake question, but I am not that familiar withcmake, so the question is,>>
>> how can I add debug symbols to PLPlot for the above cmake call?>> Hi
>> Pedro:>> I think there are some specific CMake options for making sure the
>> -g> option is used on all compilations, but the one I always use is to set>
>> the appropriate environment variables (which CMake recognizes as> well). So
>> before executing cmake in an initially empty build tree do> something like
>> the following:>> export CXXFLAGS=-g> export CFLAGS=-g> export FFLAGS=-g>> I
>> always just use the command line to build (with make) and debug> (with gdb)
>> rather than some IDE like QtCreator, but I assume setting> the above
>> environment variables will insure the QtCreator builds will> be done with
>> the -g option so that you can debug (likely wi
th gdb> doing the work in the background) with that IDE as well.>> Alan>
__________________________> Alan W. Irwin>> Astronomical research affiliation
with Department of Physics andAstronomy,> University of Victoria
(astrowww.phys.uvic.ca).>> Programming affiliations with the FreeEOS
equation-of-state> implementation for stellar interiors (freeeos.sf.net); the
Time> Ephemerides project (timeephem.sf.net); PLplot scientific plotting>
software package (plplot.sf.net); the libLASi project> (unifont.org/lasi); the
Loads of Linux Links project (loll.sf.net);> and the Linux Brochure Project
(lbproject.sf.net).> __________________________>> Linux-powered Science>
__________________________>
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