If I request CMake to use a library I assume it returns all needed libraries to
use the requested library - so I have not to check which other libs the
requested library is using internal.
So FindPackage should hide the internal details for the user - this is what our
own FindLAPACK does.
Also looking into CMakes own FindLAPACK:
at the beginning there is a note:
``LAPACK_LIBRARIES`` uncached list of libraries (using full path name) to link
against to use LAPACK
as I wrote above.
Also scrolling down I find:
find_package(BLAS)
So also CMake own FindLAPACK should also find BLAS.
I tested now also on Ubuntu. Our own FindLAPACK and also CMake FindLAPACK
include both the BLAS library in the LAPACK_LIBRARIES (both tested!)
>From the log:
LAPACK found
(/usr/lib/i386-linux-gnu/liblapack.so;/usr/lib/i386-linux-gnu/libblas.so)
So - without more information - I don't see the point of explicitly searching
for BLAS.
So maybe Gentoo is also modifying files in CMake(?)/LAPACK(?)/BLAS(?) - as
deleting the file in Hugins build system, which breaks then later.
** Changed in: hugin
Status: Incomplete => Invalid
--
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Developers, which is subscribed to Hugin.
https://bugs.launchpad.net/bugs/1892420
Title:
levmar uses BLAS when built with LAPACK, but Hugin does not link
against BLAS
Status in Hugin:
Invalid
Status in hugin package in Gentoo Linux:
New
Bug description:
```
hugin-2019.2.0/src/foreign/levmar/misc_core.c:45:#define GEMM
LM_MK_BLAS_NAME(gemm)
```
This function is a BLAS function:
https://en.wikipedia.org/wiki/Basic_Linear_Algebra_Subprograms#Level_3
Thus, since levmar is built as a static library, Hugin itself should
call `find_package(BLAS)` and `huginbase` should link against
`BLAS_LIBRARIES`.
Attached patch fixes this (in an admittedly slightly crude way) for
me.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hugin/+bug/1892420/+subscriptions
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