docs: clarify BLAS library naming for CMake-built LAPACK - #11
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Reference LAPACK's CMake build produces libblas.a/liblapack.a rather than librefblas.a, which the Make and Meson builds expect by default. Document the symlink/override workarounds. Tested (Make path only; Meson not installed locally): - Make + symlink (ln -s libblas.a librefblas.a): build succeeds - Make + BLAS_LIB override (BLAS_LIB="-L$LAPACKDIR -lblas"): build succeeds - Meson + -Dlibblas=blas -Dlibblas_path=$LAPACKDIR: build succeeds
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What
Adds a note to the README explaining that a standard CMake build of Reference LAPACK produces
libblas.a(andliblapack.a), notlibrefblas.a— which both the Make and Meson build paths in this repo expect by default (-lrefblas/-Dlibblas=refblas). Following the README as-written with such a LAPACK build fails at link time with no indication of why.Fix
Documents two options for the Make path (symlink, or override
BLAS_LIBwith the full linker flags) and the equivalent Meson option (-Dlibblas=blas).Testing
Verified all three paths build successfully against a CMake-built
Reference LAPACK:
ln -s libblas.a librefblas.a+makemake BLAS_LIB="-L$LAPACKDIR -lblas"meson setup builddir -Dlibblas=blas -Dlibblas_path=$LAPACKDIR && meson compile -C builddir