[Plplot-devel] Wrestling library linkage experiments.

[Greg J. <gv...@gm...>]

Hi guys,
  I have one specific plplot question then I will give a lot of
background info that I'm fairly certain would come up in the ensuing
Q/A for the issue.  The foreground is, I'm building GDL on mingw32,
GDL wants to (optionally) bring in  a number of  libraries to
accomplish added functionalities.

The Question:
   How do I get a specially-named libplplot version to function?  I
wish to have libplplot-v2.dll be the shared that libplplot.dll.a is an
import for - built and held in a directory  separately specified.  A
copy of libplplot-v2.dll is then kept in the runtime path alongside
the standard versions libplplot.dll, libplplotcxx.dll, wingcc.dll,
etc.
v2 version is actually "nodyn" - all of the same source except dynamic
drivers are not enabled.

What I've been trying:
  I'm using a semi-updated plplot distribution from git Oct 7, 2014.
My first attempt was to use dlltool
to create an import library libplplot.dll.a which hooked into
libplplot-nodyn.dll, itself created by simply renaming.  The link
attempt failed so I went to the build directory and basically changed
all references libplplot.dll to libplplot-nodyn.dll

cat build.make | sed 's/libplplot.dll/libplplot-nodyn.dll/g' | sed
's/libplplot-nodyn.dll.a/libplplot.dll.a/g'

(except that I did this in a text editor)

This result worked to be successfully linked (and loaded, verified via
depends_x86.exe).
  But it doesn't work.
To see that the dysfunction is not in the code, I did the same
procedure for the plplot version that
was working, going to the original build directory, making a
shareable; libplplot-sidyn.dll described by import library
libplplot.dll.a - this didn't work, either.

-----------------------

background:

  I'm running on windows 7 (64 bit).  32-bit compiles are done using
gcc 4.9.2 built by msys2;
its all posix, dwarf2.
  In order to centralize the support libraries I keep those needed to
run programs in c:/mingw/dll32-psxdw2
which is entered (via an NTFS junction) as c:/usr/lib32 below:
PATH:
C:\cmd:C:\cmd/bin:C:\usr/bin:C:\usr/bin32:C:\usr/bin32/mingw:C:\usr/lib32:C:\Windows/system32:C:\Windows:C:\Windows/System32/Wbem

greg@Homerw7 MINGW32 /d/bld/mingw32-psxdw2 $ ls -la plplot11/bin
total 1232
drwxr-xr-x 1 greg None      0 Apr 17 06:04 .
drwxr-xr-x 1 greg None      0 Apr 17 06:04 ..
-rwxr-xr-x 1 greg None 118558 Jan 28 14:54 libcsirocsa.dll
-rwxr-xr-x 1 greg None 188815 Apr 17 06:02 libplplotcxx.dll
-rwxr-xr-x 1 greg None 512591 Apr 17 06:02 libplplot-sidyn.dll
-rwxr-xr-x 1 greg None 195307 Apr 17 06:02 libplplotwxwidgets.dll
-rwxr-xr-x 1 greg None 120392 Jan 28 14:54 libqsastime.dll
-rwxr-xr-x 1 greg None 107360 Apr 17 06:02 pltek.exe

 /d/bld/mingw32-psxdw2$ ls -la plplot11-SAVE/bin
total 1236
drwxr-xr-x 1 greg None      0 Jan 28 16:53 .
drwxr-xr-x 1 greg None      0 Apr 17 05:33 ..
-rwxr-xr-x 1 greg None 118558 Jan 28 14:54 libcsirocsa.dll
-rwxr-xr-x 1 greg None 512079 Jan 28 14:54 libplplot.dll
-rwxr-xr-x 1 greg None 188803 Jan 28 14:54 libplplotcxx.dll
-rwxr-xr-x 1 greg None 195295 Jan 28 14:54 libplplotwxwidgets.dll
-rwxr-xr-x 1 greg None 120392 Jan 28 14:54 libqsastime.dll
-rwxr-xr-x 1 greg None 106848 Jan 28 14:55 pltek.exe

and also, higher up the path, c:/usr/bin32, which keeps a hodge-podge
of libraries I might be linking against for special reasons.

$ ls -la /c/usr/bin32
total 14580
drwxr-xr-x 1 greg None        0 Apr 16 21:12 .
drwxr-xr-x 1 greg None        0 Mar 30 14:57 ..
-rwxr-xr-x 1 greg None 12328473 Mar 30 14:29 gdl.exe
-rwxr-xr-x 1 greg None   203638 Apr  5 22:28 libcsironn.dll
-rwxr-xr-x 1 greg None   186311 Apr  5 22:28 libplplotcxxd.dll
-rwxr-xr-x 1 greg None   572150 Apr  5 22:28 libplplotd.dll
-rwxr-xr-x 1 greg None  1107048 Apr 16 17:42 libplplot-nodyn.dll
-rwxr-xr-x 1 greg None   512591 Apr 17 06:02 libplplot-sidyn.dll
lrwxrwxrwx 1 greg None       12 Mar  7 19:51 mingw -> /mingw32/bin


greg@Homerw7 MINGW32 /d/bld/mingw32-psxdw2
$ ls -la plplot11/bin
total 1232
drwxr-xr-x 1 greg None      0 Apr 17 06:04 .
drwxr-xr-x 1 greg None      0 Apr 17 06:04 ..
-rwxr-xr-x 1 greg None 118558 Jan 28 14:54 libcsirocsa.dll
-rwxr-xr-x 1 greg None 188815 Apr 17 06:02 libplplotcxx.dll
-rwxr-xr-x 1 greg None 512591 Apr 17 06:02 libplplot-sidyn.dll
-rwxr-xr-x 1 greg None 195307 Apr 17 06:02 libplplotwxwidgets.dll
-rwxr-xr-x 1 greg None 120392 Jan 28 14:54 libqsastime.dll
-rwxr-xr-x 1 greg None 107360 Apr 17 06:02 pltek.exe

greg@Homerw7 MINGW32 /d/bld/mingw32-psxdw2
$ ls -la plplot11-SAVE/bin
total 1236
drwxr-xr-x 1 greg None      0 Jan 28 16:53 .
drwxr-xr-x 1 greg None      0 Apr 17 05:33 ..
-rwxr-xr-x 1 greg None 118558 Jan 28 14:54 libcsirocsa.dll
-rwxr-xr-x 1 greg None 512079 Jan 28 14:54 libplplot.dll
-rwxr-xr-x 1 greg None 188803 Jan 28 14:54 libplplotcxx.dll
-rwxr-xr-x 1 greg None 195295 Jan 28 14:54 libplplotwxwidgets.dll
-rwxr-xr-x 1 greg None 120392 Jan 28 14:54 libqsastime.dll
-rwxr-xr-x 1 greg None 106848 Jan 28 14:55 pltek.exe

greg@Homerw7 MINGW32 /d/bld/mingw32-psxdw2
$ ls -la /c/mingw/dll32-psxdw2 | grep Jan\ 28
-rwxr-xr-x 1 greg None   143271 Jan 28 14:54 cairo.dll
-rwxr-xr-x 1 greg None   118558 Jan 28 14:54 libcsirocsa.dll
-rwxr-xr-x 1 greg None   512079 Jan 28 14:54 libplplot.dll
-rwxr-xr-x 1 greg None   188803 Jan 28 14:54 libplplotcxx.dll
-rwxr-xr-x 1 greg None   195295 Jan 28 14:54 libplplotwxwidgets.dll
-rwxr-xr-x 1 greg None   120392 Jan 28 14:54 libqsastime.dll
-rwxr-xr-x 1 greg None    90308 Jan 28 14:54 mem.dll
-rwxr-xr-x 1 greg None    82507 Jan 28 14:54 null.dll
-rwxr-xr-x 1 greg None   120304 Jan 28 14:54 ps.dll
-rwxr-xr-x 1 greg None   108182 Jan 28 14:54 svg.dll
-rwxr-xr-x 1 greg None   114481 Jan 28 14:54 wingcc.dll
-rwxr-xr-x 1 greg None   499063 Jan 28 14:55 wxwidgets.dll
-rwxr-xr-x 1 greg None   100481 Jan 28 14:55 xfig.dll