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Building Error #7

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461353349 opened this issue Dec 5, 2018 · 3 comments
Closed

Building Error #7

461353349 opened this issue Dec 5, 2018 · 3 comments

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@461353349
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461353349 commented Dec 5, 2018 •
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I build OpenBlas 0.3.3 from sourceforge through cmake on Win7. But when building optim, There are 16 unresolved external symbols.

logit_reg.obj: error: LNK2001: unresolved external symbol dgesv
bfgs.obj: error: LNK2001: unresolved external symbol dposv_
lbfgs.obj: error: LNK2001: unresolved external symbol dgesdd_
D:\Project\Opti\Opti\optim\Bin\optim.exe: error: LNK1120: 16 unresolved external symbol_
@kthohr
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kthohr commented Dec 5, 2018

Looks like a linking error with OpenBLAS. Check that your linker flags are set correctly (e.g., -L/path/to/OpenBLAS -lopenblas).

@461353349
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Does these linking error is relevent with lapack? I have compiled Openblas with BUILD_WITHOUT_LAPACK checked. I cannot compile Openblas with lapack on windows. I have test Openblas 0.3.3 and 0.2.20, They have same linking errors.

@kthohr
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kthohr commented Dec 7, 2018

Yes, you need Lapack.

@kthohr kthohr closed this as completed Dec 7, 2018
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@kthohr @461353349