[Plplot-devel] Need help to debug a library build

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

Hi all,
  I've been using a static build of the plplot library to build GDL,
in order to have a stable and somewhat unique set of parameters:

> cmake -DCMAKE_INSTALL_PREFIX=/d/bld/plplot/linux/cmake-static \
>
> -DENABLE_DYNDRIVERS=OFF -DDEFAULT_NO_CAIRO_DEVICES=ON
>> -DDEFAULT_NO_QT_DEVICES=ON \
>
> -DDEFAULT_NO_BINDINGS=ON -DENABLE_cxx=ON -DENABLE_wxwidgets=ON
>> -DOLD_WXWIDGETS=ON \
>
> -DWITH_FREETYPE=OFF -DBUILD_SHARED_LIBS=OFF \
>
> -DPLD_pdf=OFF -DPLD_psttf=OFF \
>
> /f/tarball/plplot-5.11.1
>
>
OLD_WIDGETS is a requirement for the gdl widgets subroutines to operate.
After I install this result in /usr/local/lib, I apply the following:
(libplplotXXX.a files have been renamed to libplplotXXX-static.a)

in /usr/local/lib:

> rm -rf .o .p libplplot-custom.a libplplotcxx-custom.a
> mkdir .p && cd .p && ar x ../libplplot-static.a && ar x
> ../libplplotwxwidgets-static.a && cd ..
> mkdir .o && cd .o
> ar x ../libcsironn.a
> ar x ../libcsirocsa.a
> ar x ../libqsastime.a
> ar x ../libshp.a
> ar x ../libqhullstatic.a
> cd ..
> ar rc libplplot-custom.a .p/* .o/*
> cp -p libplplotcxx-static.a libplplotcxx-custom.a


And this works fine, on the usual build of GDL.

( Which I encourage any and all of you to do - its only 2 MB of code with a
minimal patch
https://sourceforge.net/p/gnudatalanguage/patches/102/ that will adapt the
current (recent)
distribution to a mingw, or mingw-w64, build.)

I am running into an issue now trying to build gdl as a llibrary+main
program, the error output
suggest I don;t have enough -fPIC-compiled routines:

Linking CXX shared library libgnudatalanguage.so

/usr/lib64/gcc/x86_64-suse-linux/4.8/../../../../x86_64-suse-linux/bin/ld:
> /usr/local/lib/libplplot-custom.a(global.c.o): relocation R_X86_64_32S
> against `qh_qh' can not be used when making a shared object; recompile with
> -fPIC

/usr/local/lib/libplplot-custom.a: error adding symbols: Bad value

collect2: error: ld returned 1 exit status

src/CMakeFiles/gnudatalanguage.dir/build.make:3397: recipe for target
> 'src/libgnudatalanguage.so.0' failed


I tried setting re-building the qhullstatic.a library with CFLAGS,
CXXFLAGS=-fPIC to no avail.

Can anyone clue me in to where the problem is?

Thanks,
Greg