Thank you very much for your replies, I now have 2 solutions to
my problem! Both compiling on a virtual machine running debian
wheezy, and using gcc to do the linking produced executables that
would run on the cluster.
Compiling with the verbose flags for linker and compiler produced
the following output:
failed gdc attempt: http://dpaste.com/0Z5V4PV
successful dmd attempt: http://dpaste.com/0S5WKJ5
successful use of gcc to link: http://dpaste.com/0YYR39V
It seems a bit of a mess, with various libraries in various
places. I'll see if I can get to the bottom of it, I think it'll
be a learning experience.
Thanks again for the swift and useful help and guidance.
Andrew
On Monday, 16 March 2015 at 19:22:18 UTC, Johannes Pfau wrote:
Am Mon, 16 Mar 2015 16:44:45 +0000
schrieb "Andrew Brown" <aabrow...@hotmail.com>:
Hi,
I'm trying to compile code which calls C and fortan routines
from D on the linux cluster at work. I've managed to get it to
work with all 3 compilers on my laptop, but LDC and GDC fail
on the cluster (though DMD works perfectly). I'm using the
precompiled compiler binaries on these systems, the cluster
doesn't have the prerequistites for building them myself and I
don't have admin rights.
For GDC the commands I run are:
gcc -c C_code.c Fortran_code.f
gdc D_code.d C_code.o Fortran_code.f -lblas -lgsl -lgslcblas
-lm -lgfortran -o out
You could try to do the linking with the local compiler:
gdc D_code.d
gcc D_code.o C_code.o Fortran_code.o -lgphobos2 -lpthread
-lblas -lgsl
-lgslcblas -lm -L path/to/x86_64-gdcproject-linux-gnu/lib/
The error messages are:
/software/lib64/libgsl.so: undefined reference to
`memcpy@GLIBC_2.14'
/software/lib64/libgfortran.so.3: undefined reference to
`clock_gettime@GLIBC_2.17'
/software/lib64/libgfortran.so.3: undefined reference to
`secure_getenv@GLIBC_2.17'
collect2: error: ld returned 1 exit status
Seems like the binary GDC toolchain somehow picks up a wrong
libc. The
toolchains are built with GLIBC 2.14. But IIRC we don't ship
the libc
in the binary packages (for native compilers) and it should
pick up the
local libc. Please run gdc with the '-v' and '-Wl,--verbose'
options and
post a link to the full output.
I can remove the gsl messages by statically linking to
libgsl.a, but this doesn't solve the gfortran issues.
If anyone knows a way round these issues, I'd be very
grateful. I'd also eventually like to find a way to easily
share linux biniaries with people, so they can use this code
without these kinds of headaches. If anyone has any advice for
making this portable, that would also help me out a lot.
Usually the best option is to compile on old linux systems.
Binaries
often run on newer systems but not on older ones. You could
setup
debian wheezy or an older version in a VM or using docker.
Or you use docker.io ;-) I personally think the docker approach
is kind
of overkill but avoiding compatibility issues is one of
docker's main
selling points.
