Re: [Opencxx-users] Cygwin problem

[Grigorenko D. <pos...@na...>]

Hello

> As you see when occ.exe is loaded the dynamic linker will pick the
> global cygltdl.dll;
I`m sorry. The coorect log is here:

H:\...ome\Dima\opencxx-2.7\testbed\bin>cygcheck occ.exe
Found: .\occ.exe
occ.exe
  .\cygltdl-3.dll
    h:\cygwin\bin\cygwin1.dll
      H:\WINDOWS\System32\ADVAPI32.DLL
        H:\WINDOWS\System32\ntdll.dll
        H:\WINDOWS\System32\KERNEL32.dll
        H:\WINDOWS\System32\RPCRT4.dll

The previos one described the case when all is correct.
I`d like to call attention that sigsegv occurs whith the local (opencxx/)
cygltdl-3.dll

> ./configure --with-ltdl=/my/path/libltdl
> we need to verified that your build does it correctly.
I tried
./configure --with-ltdl=/usr/bin
becouse the correct cygltdl-3.dll is in the /usr/bin directory

'make test' do not work properly. It steel uses local ltdl and crashes.

> > (2) Another solution would be to make OpenC++ by default use
> > system-wide cygltdl.dll on Cygwin, as anyway there is no Cygwin on
> > Compile Farm. This requires modifying configure.in/Makefile.am, so
> > that it does not use libltdl if it is installed. The key point that
> > needs to be changed is --enable-ltdl-install in Makefile.am,
> > because it forces installation of libltdl.so/cygltdl-3.dll
>
> This does not resolve the Compile farm problem,
> because you must not be authorized to replace system library.
As far as I understood, the idea is to use system-wide library if it
presents. You must not be authorized to do it.
Unfortunately I do not know autoconf  enough to modify configure.in. At
least once I did not investigate it enough. I`ll try later.

> > (3) Ultimate solution, which I think is the way to go in the long
> > term, would be to
> >
> >    - remove libltdl from OpenC++ at all
>
> we keep it, it is our development reference.
> Others mechanisms provided way around this.
I am agree.