"*** [cgemm_cr.obj] Error 1" in building on Windows 10

[ShigeruHEMMI]

Dear OpenBLAS developer, thank you for providing very excellent library.
I encounteerd a bug in building OpenBLAS-v0.3 on Windows10 pro 64bit.

My PC is Windows 10 Pro 64bit version 1803.
Am using gcc and gfortran of mingw-w64 labelled x86_64-8.1.0-release-posix-seh-rt_v6-rev0:
E:>gcc --version
gcc (x86_64-posix-seh-rev0, Built by MinGW-W64 project) 8.1.0

together with the make program of msys. My PATH order is mingw-w64 is first and msys ast.

My encountered output is the followings:

E:\Alibraries\xianyi-OpenBLAS-939452e>make -j 4
ln: creating symbolic link libopenblas.a' to libopenblas_haswellp-r0.3.0.dev.a': No such file or directory
Makefile:134: recipe for target libs' failed make: [libs] Error 1 (ignored) make[1]: Entering directory /e/Alibraries/xianyi-OpenBLAS-939452e/interface'
gcc -O2 -DMS_ABI -DMAX_STACK_ALLOC=2048 -Wall -m64 -DF_INTERFACE_GFORT -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -DMAX_PARALLEL_NUMBER=1 -DASMNAME=saxpy -DASMFNAME=saxpy_ -DNAME=saxpy_ -DCNAME=saxpy -DCHAR_NAME="saxpy_" -DCHAR_CNAME="saxpy" -DNO_AFFINITY -I.. -I. -UDOUBLE -UCOMPLEX -c axpy.c -o saxpy.obj

(many lines with no error snipped)

gcc -O2 -DMS_ABI -DMAX_STACK_ALLOC=2048 -Wall -m64 -DF_INTERFACE_GFORT -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -DMAX_PARALLEL_NUMBER=1 -DASMNAME=cgemm_tr -DASMFNAME=cgemm_tr_ -DNAME=cgemm_tr_ -DCNAME=cgemm_tr -DCHAR_NAME="cgemm_tr_" -DCHAR_CNAME="cgemm_tr" -DNO_AFFINITY -I../.. -UDOUBLE -DCOMPLEX -c -UDOUBLE -DCOMPLEX -DTR gemm.c -o cgemm_tr.obj
gcc -O2 -DMS_ABI -DMAX_STACK_ALLOC=2048 -Wall -m64 -DF_INTERFACE_GFORT -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -DMAX_PARALLEL_NUMBER=1 -DASMNAME=cgemm_cr -DASMFNAME=cgemm_cr_ -DNAME=cgemm_cr_ -DCNAME=cgemm_cr -DCHAR_NAME="cgemm_cr_" -DCHAR_CNAME="cgemm_cr" -DNO_AFFINITY -I../.. -UDOUBLE -DCOMPLEX -c -UDOUBLE -DCOMPLEX -DCR gemm.c -o cgemm_cr.obj
: error: expected identifier or '(' before numeric constant
gcc -O2 -DMS_ABI -DMAX_STACK_ALLOC=2048 -Wall -m64 -DF_INTERFACE_GFORT -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -DMAX_PARALLEL_NUMBER=1 -DASMNAME=cgemm_rn -DASMFNAME=cgemm_rn_ -DNAME=cgemm_rn_ -DCNAME=cgemm_rn -DCHAR_NAME="cgemm_rn_" -DCHAR_CNAME="cgemm_rn" -DNO_AFFINITY -I../.. -UDOUBLE -DCOMPLEX -c -UDOUBLE -DCOMPLEX -DRN gemm.c -o cgemm_rn.obj
gcc -O2 -DMS_ABI -DMAX_STACK_ALLOC=2048 -Wall -m64 -DF_INTERFACE_GFORT -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -DMAX_PARALLEL_NUMBER=1 -DASMNAME=cgemm_rt -DASMFNAME=cgemm_rt_ -DNAME=cgemm_rt_ -DCNAME=cgemm_rt -DCHAR_NAME="cgemm_rt_" -DCHAR_CNAME="cgemm_rt" -DNO_AFFINITY -I../.. -UDOUBLE -DCOMPLEX -c -UDOUBLE -DCOMPLEX -DRT gemm.c -o cgemm_rt.obj
Makefile:365: recipe for target cgemm_cr.obj' failed make[1]: *** [cgemm_cr.obj] Error 1 make[1]: *** Waiting for unfinished jobs.... make[1]: Leaving directory /e/Alibraries/xianyi-OpenBLAS-939452e/driver/level3'
Makefile:134: recipe for target `libs' failed
make: *** [libs] Error 1

Best regards,

Shigeru Hemmi

[martin-frbg]

This is problem #1503, fixed by #1584 - recent Windows (and recent mingw) have added a system variable named "CR" that clashes with the -DCR used in the Makefile for compiling cgemm_cr.obj
You can copy the corrected file driver/level3/Makefile from #1584 by clicking "Files changed", then
the "View" button on the "diff" output that is shown, then right-click on the "Raw" button to save the
plaintext view of the file.
(Or pick a binary release from https://github.com/JuliaLinearAlgebra/OpenBLASBuilder/releases. Or download a zip file of the current development snapshot from the green "Clone or download" button on the "Code" tab.)

[ShigeruHEMMI]

Thanks for the immediate response but still problems.

(1) You wrote:

You can copy the corrected file driver/level3/Makefile from #1584 by clicking "Files changed", then
the "View" button on the "diff" output that is shown, then right-click on the "Raw" button to save the
plaintext view of the file.

The new Makefile not working for me.
There are some differences between original one and new one. For example, the first 2 lines differ:

TOPDIR = .
include ./Makefile.system

TOPDIR = ../..
include ../../Makefile.system

And simple change for these lines not solves the problems (seems nothing building process starts).

(2) And you wrote:

(Or pick a binary release from https://github.com/JuliaLinearAlgebra/OpenBLASBuilder/releases.

OpenBLAS.x86_64-w64-mingw32.tar.gz (0.3.0 release, Julia compatibility) downloaded and tested.
I ran into the link problems, small part of my output is
undefined reference to dcopy_' undefined reference to dtrsm_'
undefined reference to dscal_' undefined reference to dgemm_'
undefined reference to dswap_' undefined reference to dtrsm_'
(snipped)

That is, blas or lapack libraries not included in binary release.

Regards,

[martin-frbg]

Could be you overwrote the wrong Makefile ? The one from #1584 should start with TOPDIR set to ../.. and belongs in the driver/level3 folder. The one starting with TOPDIR set to "." (that is "current folder") is the toplevel Makefile (the one in /e/Alibraries/xianyi-OpenBLAS-939452e in your case) and should not change.
I did not expect the Julia-provided binary to have only the BLAS part of the library, sorry.

[martin-frbg]

Actually not sure where the undefined reference errors come from, seems more likely that your linker did not find the library ? (OpenBLAS binary release with no BLAS functions in it is simply not possible)

[ShigeruHEMMI]

(1)
I replaced the Makefile in xianyi-OpenBLAS-939452e/driver/level3 at your suggestion.
The make command generated 3 files
(libopenblas.dll, libopenblas.dll.a,libopenblas_haswellp-r0.3.0.dev.a),
and everything is OK, my problem completeley solved. Thank you very much.

(2)
My target application is MUMPS 5.1.2 (http://mumps.enseeiht.fr/).
For the combination(libopenblas.dll.a, libopenblas.dll),
generated in xianyi-OpenBLAS-939452e, linking is OK and no problem.

On the other hand, for the combination(libopenblas64_.dll.a,
libopenblas64_.dll) extracted from OpenBLAS.x86_64-w64-mingw32.tar.gz
(0.3.0 release, Julia compatibility), linking fails.
Note that I did not change file names provided.

My console output is:

(snip header output)
gfortran -o examples\c_example_SEQ.exe examples\c_example.o -Llibmingw-w64\SEQ -LE:\cygwin64\home\shigeru\ApetamagneticD\libmingw-w64_MUMPS_5.1.2 -LE:\cygwin64\home\shigeru\ApetamagneticD\libmingw-w64_MUMPS_5.1.2 -lzmumps_SEQ -ldmumps_SEQ -lmumps_common_SEQ -lpord -lmetis -lmpiseq -lopenblas64_.dll
libmingw-w64\SEQ/libdmumps_SEQ.a(dtools.o):dtools.F:(.text+0x48fc): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_driver.o):dfac_driver.F:(.text+0x4c5): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_driver.o):dfac_driver.F:(.text+0xa8a): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_driver.o):dfac_driver.F:(.text+0x10d8): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_driver.o):dfac_driver.F:(.text+0x11bd): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_driver.o):dfac_driver.F:(.text+0x1363): more undefined references to dcopy_' follow
libmingw-w64\SEQ/libdmumps_SEQ.a(dooc_panel_piv.o):dooc_panel_piv.F:(.text+0x377): undefined reference to dswap_' libmingw-w64\SEQ/libdmumps_SEQ.a(dmumps_ooc_buffer.o):dmumps_ooc_buffer.F:(.text+0x27be): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dmumps_ooc_buffer.o):dmumps_ooc_buffer.F:(.text+0x2ad7): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dmumps_ooc_buffer.o):dmumps_ooc_buffer.F:(.text+0x2c3e): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x6f7): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8ef): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x905): undefined reference to dscal_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0xac2): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0xcf4): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0xd6f): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x101b): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x17a8): undefined reference to dswap_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x1822): undefined reference to dswap_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x18f9): undefined reference to dswap_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x19bb): undefined reference to dswap_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x2094): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x2278): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x250d): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x2aa0): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x2af9): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x7842): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x7b18): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x7bd0): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x7c8e): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x7f9e): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8048): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8249): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8391): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8589): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8646): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x86e6): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_aux.o):dfac_front_aux.F:(.text+0x8fe8): undefined reference to dger_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_type2_aux.o):dfac_front_type2_aux.F:(.text+0xeab): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_front_type2_aux.o):dfac_front_type2_aux.F:(.text+0xf01): undefined reference to dcopy_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blfac_slave.o):dfac_process_blfac_slave.F:(.text+0x254d): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x14a4): undefined reference to dswap_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x166a): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x2899): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x465c): undefined reference to dscal_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x4d21): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x4fb3): undefined reference to dgemv_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto_LDLT.o):dfac_process_blocfacto_LDLT.F:(.text+0x50be): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto.o):dfac_process_blocfacto.F:(.text+0x1bcc): undefined reference to dswap_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto.o):dfac_process_blocfacto.F:(.text+0x1d4a): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto.o):dfac_process_blocfacto.F:(.text+0x2780): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_process_blocfacto.o):dfac_process_blocfacto.F:(.text+0x4137): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_type3_symmetrize.o):dfac_type3_symmetrize.F:(.text+0xe6): undefined reference to dcopy_' libmingw-w64\SEQ/libdmumps_SEQ.a(dmumps_iXamax.o):dmumps_iXamax.F:(.text+0x19): undefined reference to idamax_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x2975): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x2abb): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x4265): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x4358): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x447d): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x468c): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd.o):dsol_bwd.F:(.text+0x5f22): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x702): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x1550): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x4bdb): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x5853): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x5dea): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x5ebb): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x6094): undefined reference to dtrsm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_fwd_aux.o):dsol_fwd_aux.F:(.text+0x67f2): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x18c0): undefined reference to xerbla_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1990): undefined reference to ilaenv_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x19e3): undefined reference to dnrm2_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1a3f): undefined reference to dlamch_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1b76): undefined reference to idamax_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1c0c): undefined reference to dswap_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1ca5): undefined reference to dswap_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1e1b): undefined reference to dgemv_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1e9e): undefined reference to dlarfg_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x1fc0): undefined reference to dgemv_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x2123): undefined reference to dgemv_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x21e8): undefined reference to dgemv_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x22e8): undefined reference to dgemv_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x23cb): undefined reference to dlarfg_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x2619): undefined reference to dnrm2_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x281f): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x3148): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x33f4): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x352d): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x3ad6): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x463a): more undefined references to dgemm_' follow
libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x6b79): undefined reference to dorgqr_' libmingw-w64\SEQ/libdmumps_SEQ.a(dlr_core.o):dlr_core.F:(.text+0x6c9c): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x1286): undefined reference to dormqr_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x4243): undefined reference to dorgqr_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x4320): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x514f): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x610d): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x61f6): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x6498): undefined reference to dgemm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dfac_lr.o):dfac_lr.F:(.text+0x73b3): more undefined references to dgemm_' follow
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd_aux.o):dsol_bwd_aux.F:(.text+0x409a): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd_aux.o):dsol_bwd_aux.F:(.text+0x5a41): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd_aux.o):dsol_bwd_aux.F:(.text+0x5b22): undefined reference to dtrsm_' libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd_aux.o):dsol_bwd_aux.F:(.text+0x5ed7): undefined reference to dgemm_'
libmingw-w64\SEQ/libdmumps_SEQ.a(dsol_bwd_aux.o):dsol_bwd_aux.F:(.text+0x7aab): undefined reference to `dgemv_'
collect2.exe: error: ld returned 1 exit status
scons: *** [c_example_SEQ.exe] Error 1
scons: building terminated because of errors.

Best regards,

[martin-frbg]

@andreasnoack @staticfloat any idea why your mingw-w64 binary would not link for him on Win10 ?

[staticfloat]

When building for ILP64, we set SYMBOLSUFFIX to be equal to 64_; this means that the symbols get renamed to things like dgemm_64_.

[martin-frbg]

Ah, thanks, that would explain it. Guess I should mention this on the OpenBLAS wiki page.