windows 10 +MSYS : error while loading shared libraries

[reumle]

Hello I have managed to compile the C project successfully (thanks to MSYS/Mingw64), however

• i can't run tests:

$ make test
mkdir -p out/obj
…..
*************************************************************
Successfully compiled SuperSCS (based on SCS)
Find more at: https://github.com/kul-forbes/scs
To test, type 'out/demo_direct' or 'out/demo_indirect',
….

Compiling individual tests...
….
$ out/UNIT_TEST_RUNNER_DIR.exe
C:/proj/Rprojs/PS1908/scs/out/UNIT_TEST_RUNNER_DIR.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory

This happens whether libblas.dll and liblapack.dll are in the out directory or not. (I put them there after compilation).

some subquestions:

• why is the missing library named "?"
• what would a static linking look like?
• what is the way to call up the demo? the instruction To test, type 'out/demo_direct' or 'out/demo_indirect', does not seem to work… should there be an .exe in there?

Thanks!

[reumle]

Hello, this works now. The error is gone.

make run-test
….
out/UNIT_TEST_RUNNER_DIR.exe

is functionnal on my machine, Windows 10 msys/Mingw64 emulation.

Please find below some recipes (some obvious) to make it work.

1. download the lapack package for msys. Probably best with pacman -S mingw-w64-x86_64-lapack

• Simply using the liblapack.dll and libblas.dll (for instance from https://jijinlee.blogspot.com/2017/10/lapack-for-windows.html) did not work for me, likely because I am not expert enough to register them properly, hence failure at runtime.

2. make sure your (offending) extra libraries libblas and liblapack are not visible from the <scs/out> when you run out/UNIT_TEST_RUNNER_DIR.exe
3. success!

[jerrylvx]

I have run into another error while trying to compile this:

Compiling individual tests...
cc -c -g -Wall -std=c99 -Wwrite-strings -funroll-loops -Wstrict-prototypes -I. -Iinclude -D__USE_MINGW_ANSI_STDIO=1 -Ofast -DSVD_ACTIVATED=1 -DCTRLC=1  -DCOPYAMATRIX=1  -DLAPACK_LIB_FOUND -DUSE_LAPACK tests/c/test_dummy.c -o out/obj/test_dummy.o
cc -c -g -Wall -std=c99 -Wwrite-strings -funroll-loops -Wstrict-prototypes -I. -Iinclude -D__USE_MINGW_ANSI_STDIO=1 -Ofast -DSVD_ACTIVATED=1 -DCTRLC=1  -DCOPYAMATRIX=1  -DLAPACK_LIB_FOUND -DUSE_LAPACK tests/c/test_utilities.c -o out/obj/test_utilities.o
cc -c -g -Wall -std=c99 -Wwrite-strings -funroll-loops -Wstrict-prototypes -I. -Iinclude -D__USE_MINGW_ANSI_STDIO=1 -Ofast -DSVD_ACTIVATED=1 -DCTRLC=1  -DCOPYAMATRIX=1  -DLAPACK_LIB_FOUND -DUSE_LAPACK tests/c/test_broyden.c -o out/obj/test_broyden.o
cc -c -g -Wall -std=c99 -Wwrite-strings -funroll-loops -Wstrict-prototypes -I. -Iinclude -D__USE_MINGW_ANSI_STDIO=1 -Ofast -DSVD_ACTIVATED=1 -DCTRLC=1  -DCOPYAMATRIX=1  -DLAPACK_LIB_FOUND -DUSE_LAPACK tests/c/test_superscs.c -o out/obj/test_superscs.o
Building test runner...
cc -g -Wall -std=c99 -Wwrite-strings -funroll-loops -Wstrict-prototypes -I. -Iinclude -D__USE_MINGW_ANSI_STDIO=1 -Ofast -DSVD_ACTIVATED=1 -DCTRLC=1  -DCOPYAMATRIX=1  -DLAPACK_LIB_FOUND -DUSE_LAPACK tests/c/test_runner_dir.c \
    -o out/UNIT_TEST_RUNNER_DIR out/obj/test_dummy.o \
    out/obj/test_broyden.o \
    out/obj/test_superscs.o \
    out/obj/test_utilities.o \
    out/libscsdir.a -lm -lblas -llapack
C:/tools/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: out/obj/test_dummy.o:C:\tools\msys64\scs/include/unit_test_util.h:60: multiple definition of `number_of_assertions'; C:\tools\msys64\tmp\ccfsegwV.o:C:\tools\msys64\scs/include/unit_test_util.h:60: first defined here
C:/tools/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: out/obj/test_broyden.o:C:\tools\msys64\scs/include/unit_test_util.h:60: multiple definition of `number_of_assertions'; C:\tools\msys64\tmp\ccfsegwV.o:C:\tools\msys64\scs/include/unit_test_util.h:60: first defined here
C:/tools/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: out/obj/test_superscs.o:C:\tools\msys64\scs/include/unit_test_util.h:60: multiple definition of `number_of_assertions'; C:\tools\msys64\tmp\ccfsegwV.o:C:\tools\msys64\scs/include/unit_test_util.h:60: first defined here
C:/tools/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: out/obj/test_utilities.o:C:\tools\msys64\scs/include/unit_test_util.h:60: multiple definition of `number_of_assertions'; C:\tools\msys64\tmp\ccfsegwV.o:C:\tools\msys64\scs/include/unit_test_util.h:60: first defined here
C:/tools/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: out/libscsdir.a(unit_test_util.o):C:\tools\msys64\scs/include/unit_test_util.h:60: multiple definition of `number_of_assertions'; C:\tools\msys64\tmp\ccfsegwV.o:C:\tools\msys64\scs/include/unit_test_util.h:60: first defined here
collect2.exe: error: ld returned 1 exit status
make: *** [Makefile:162: test] Error 1