Compiling and linking LAPACK 95 (Windows)

[NickFort]

Hi all,

I'm back with another question. I think the title of this thread does need a bit of explanation.

I've downloaded LAPACK (which contains the BLAS source) and LAPACK95 from netlib.org.

As I understand it, LAPACK95 depends on LAPACK, which in turn depends on BLAS.

I want to compile all of this myself; there are Makefiles for all three (none of which works with Windows out of the box, and there is a modification to the Makefile at

http://gcc.gnu.org/wiki/LAPACK on Windows,

and a few others) BUT, despite this convenience, I'd still like to compile them myself, as an exercise.

What I've done so far is:

BLAS

$ gfortran *.f -c -O3
$ gfortran -shared *.o -o libblas.dll

LAPACK

$ gfortran *.f -c -O3
$ gfortran -shared *.o -o liblapack.dll -L. libblas.dll

With LAPACK, there are a few files in the INSTALL folder that are dependencies of the source files in the SRC folder, which I just copy over to the SRC folder.

The above does compile.

I haven't compiled LAPACK95 yet, and I can't test this yet because I need to wait, but does it sound about right? Do I need the -mrtd option? I've read the GCC manual, but I can't for the life of me figure out what it actually does; all I know is that it's something to do with calling conventions. Does it just set calling convention to stdcall?

I expect that the BLAS portion above is probably OK, but can I just link BLAS to LAPACK with the -L.?

Thanks,
NF

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Background: Chemical engineer, familiar mostly with MATLAB, but now branching out into real programming.

 

[NickFort]

Apologies... "and I can't test this yet because I need to wait" doesn't make sense.

It should read: "and I can't test this yet because I need to wait to compile LAPACK95, and then figure out how to use it".

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Background: Chemical engineer, familiar mostly with MATLAB, but now branching out into real programming.

 

[NickFort]

Actually, no, it doesn't compile. It did yesterday, after having run the Windows-compatible makefile from

http://gcc.gnu.org/wiki/LAPACK on Windows

and using the .o files to make the DLLs seemed to compile fine.

However, starting it afresh gives:

cla_gbrfsx_extended.o:cla_gbrfsx_extended.f:(.text+0x224): undefined reference to `blas_cgbmv2_x_'
cla_gbrfsx_extended.o:cla_gbrfsx_extended.f:(.text+0xa52): undefined reference to `blas_cgbmv_x_'
cla_gerfsx_extended.o:cla_gerfsx_extended.f:(.text+0x218): undefined reference to `blas_cgemv2_x_'
cla_gerfsx_extended.o:cla_gerfsx_extended.f:(.text+0xa09): undefined reference to `blas_cgemv_x_'
cla_herfsx_extended.o:cla_herfsx_extended.f:(.text+0x222): undefined reference to `blas_chemv2_x_'
cla_herfsx_extended.o:cla_herfsx_extended.f:(.text+0xa02): undefined reference to `blas_chemv_x_'
cla_porfsx_extended.o:cla_porfsx_extended.f:(.text+0x222): undefined reference to `blas_chemv2_x_'
cla_porfsx_extended.o:cla_porfsx_extended.f:(.text+0xa02): undefined reference to `blas_chemv_x_'
cla_syrfsx_extended.o:cla_syrfsx_extended.f:(.text+0x222): undefined reference to `blas_csymv2_x_'
cla_syrfsx_extended.o:cla_syrfsx_extended.f:(.text+0xa02): undefined reference to `blas_csymv_x_'
dla_gbrfsx_extended.o:dla_gbrfsx_extended.f:(.text+0x23c): undefined reference to `blas_dgbmv2_x_'
dla_gbrfsx_extended.o:dla_gbrfsx_extended.f:(.text+0xa56): undefined reference to `blas_dgbmv_x_'
dla_gerfsx_extended.o:dla_gerfsx_extended.f:(.text+0x228): undefined reference to `blas_dgemv2_x_'
dla_gerfsx_extended.o:dla_gerfsx_extended.f:(.text+0xa07): undefined reference to `blas_dgemv_x_'
dla_porfsx_extended.o:dla_porfsx_extended.f:(.text+0x234): undefined reference to `blas_dsymv2_x_'
dla_porfsx_extended.o:dla_porfsx_extended.f:(.text+0x9ee): undefined reference to `blas_dsymv_x_'
dla_syrfsx_extended.o:dla_syrfsx_extended.f:(.text+0x234): undefined reference to `blas_dsymv2_x_'
dla_syrfsx_extended.o:dla_syrfsx_extended.f:(.text+0x9ee): undefined reference to `blas_dsymv_x_'
sla_gbrfsx_extended.o:sla_gbrfsx_extended.f:(.text+0x224): undefined reference to `blas_sgbmv2_x_'
sla_gbrfsx_extended.o:sla_gbrfsx_extended.f:(.text+0xae7): undefined reference to `blas_sgbmv_x_'
sla_gerfsx_extended.o:sla_gerfsx_extended.f:(.text+0x216): undefined reference to `blas_sgemv2_x_'
sla_gerfsx_extended.o:sla_gerfsx_extended.f:(.text+0xaa9): undefined reference to `blas_sgemv_x_'
sla_porfsx_extended.o:sla_porfsx_extended.f:(.text+0x222): undefined reference to `blas_ssymv2_x_'
sla_porfsx_extended.o:sla_porfsx_extended.f:(.text+0xa95): undefined reference to `blas_ssymv_x_'
sla_syrfsx_extended.o:sla_syrfsx_extended.f:(.text+0x222): undefined reference to `blas_ssymv2_x_'
sla_syrfsx_extended.o:sla_syrfsx_extended.f:(.text+0xa95): undefined reference to `blas_ssymv_x_'
zla_gbrfsx_extended.o:zla_gbrfsx_extended.f:(.text+0x237): undefined reference to `blas_zgbmv2_x_'
zla_gbrfsx_extended.o:zla_gbrfsx_extended.f:(.text+0xaa5): undefined reference to `blas_zgbmv_x_'
zla_gerfsx_extended.o:zla_gerfsx_extended.f:(.text+0x229): undefined reference to `blas_zgemv2_x_'
zla_gerfsx_extended.o:zla_gerfsx_extended.f:(.text+0xa57): undefined reference to `blas_zgemv_x_'
zla_herfsx_extended.o:zla_herfsx_extended.f:(.text+0x235): undefined reference to `blas_zhemv2_x_'
zla_herfsx_extended.o:zla_herfsx_extended.f:(.text+0xa55): undefined reference to `blas_zhemv_x_'
zla_porfsx_extended.o:zla_porfsx_extended.f:(.text+0x235): undefined reference to `blas_zhemv2_x_'
zla_porfsx_extended.o:zla_porfsx_extended.f:(.text+0xa45): undefined reference to `blas_zhemv_x_'
zla_syrfsx_extended.o:zla_syrfsx_extended.f:(.text+0x235): undefined reference to `blas_zsymv2_x_'
zla_syrfsx_extended.o:zla_syrfsx_extended.f:(.text+0xa55): undefined reference to `blas_zsymv_x_'
collect2: ld returned 1 exit status

upon running

$ gfortran *.f -c -O3
$ gfortran -shared *.o -o liblapack.dll -L. libblas.dll

--------------------------------------
Background: Chemical engineer, familiar mostly with MATLAB, but now branching out into real programming.

 

[NickFort]

Never mind, got it! (The above routines are for "extended precision", and aren't on by default in the makefile, so I just deleted their object files).

Ignore posts 2 and 3, but the first is still valid.

(Apologies for the monologuing -- I know it's a bit silly on a forum!)

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Background: Chemical engineer, familiar mostly with MATLAB, but now branching out into real programming.