Make sure lsame_ is exported
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The reference (netlib) LAPACK implementation exports `lsame_` unconditionally. When trying to use libflame as a drop-in replacement for the reference implementation on Windows, programs fail to start with an error that the symbol `lsame_` is undefined. IIUC, that is because the symbol resolution is done on link time for Windows (instead of at runtime on most other platforms). The proposed change makes sure that `lsame_` is exported from libflame even if configured with `--disable-lapack2flame --disable-builtin-blas` (the default). IIUC, an alternative would be to export this symbol defined in `src/flablas/f2c/lsame.c`. But the proposed change is a bit closer to the reference implementation. See also this downstream report: https://savannah.gnu.org/bugs/index.php?63184
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The reference (netlib) LAPACK implementation exports
lsame_unconditionally. When trying to use libflame as a drop-in replacement for the reference implementation on Windows, programs fail to start with an error that the symbollsame_is undefined. IIUC, that is because the symbol resolution is done on link time for Windows (instead of at runtime on most other platforms).The proposed change makes sure that
lsame_is exported from libflame even if configured with--disable-lapack2flame --disable-builtin-blas(the default).IIUC, an alternative would be to export this symbol defined in
src/flablas/f2c/lsame.c. But the proposed change is a bit closer to the reference implementation.See also this downstream report: https://savannah.gnu.org/bugs/index.php?63184