mmuetzel
commented
2 days ago Where did you get your libblas.dll from? Iiuc, it shouldn't export the symbols from the GFortran library. Maybe, the linker that was used to produce that library is broken or it was invoked incorrectly?
Anyway, it might be possible to work around the issue with your (faulty) BLAS library by adding -DCMAKE_SHARED_LINKER_FLAGS="-Wl,--allow-multiple-definition" to your CMake configure flags.
However, it might be better to track down why your BLAS library is exporting those symbols and fix that.
Host Environment
After configuring done and Generating done in cmake ,i failed when input ‘’D:\MinGW\mingw64\bin\mingw32-make.exe'' in cmd window.
Failure logs [ 50%] Building Fortran object SRC/CMakeFiles/lapack.dir/zgedmdq.f90.obj [ 50%] Linking Fortran shared library ..\bin\liblapack.dll D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(string_intrinsics.o):(.text$_gfortran_concat_string+0x0): multiple definition of
_gfortran_concat_string' ../lib/libblas.dll.a(d000008.o):(.text+0x0): first defined here D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(string_intrinsics.o):(.text$_gfortran_string_len_trim+0x0): multiple definition of_gfortran_string_len_trim' ../lib/libblas.dll.a(d000038.o):(.text+0x0): first defined here D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(transfer.o):(.text$_gfortran_transfer_integer_write+0x0): multiple definition of_gfortran_transfer_integer_write' ../lib/libblas.dll.a(d000058.o):(.text+0x0): first defined here D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(transfer.o):(.text$_gfortran_transfer_character_write+0x0): multiple definition of_gfortran_transfer_character_write' ../lib/libblas.dll.a(d000053.o):(.text+0x0): first defined here D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(transfer.o):(.text$_gfortran_st_write+0x0): multiple definition of_gfortran_st_write' ../lib/libblas.dll.a(d000032.o):(.text+0x0): first defined here D:/MinGW/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libgfortran.a(transfer.o):(.text$_gfortran_st_write_done+0x0): multiple definition of_gfortran_st_write_done' ../lib/libblas.dll.a(d000033.o):(.text+0x0): first defined here collect2.exe: error: ld returned 1 exit status mingw32-make[2]: [SRC\CMakeFiles\lapack.dir\build.make:29048: bin/liblapack.dll] Error 1 mingw32-make[1]: [CMakeFiles\Makefile2:448: SRC/CMakeFiles/lapack.dir/all] Error 2 mingw32-make: [Makefile:155: all] Error 2How can i solve this issue?