From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: Work around lapack build failure on sparc64 with gcc/15
To: Theo Buehler <tb@theobuehler.org>
Cc: ports@openbsd.org
Date: Mon, 10 Nov 2025 16:28:04 +0000

On 2025/11/10 17:03, Theo Buehler wrote:
> While it would be nice to really fix FortranCInterface_VERIFY(), the
> cmake macros here are one of the worst things I've seen in a long time
> and decided this is just not worth my time.

fine with me

> If you go search for 'Verifying Fortran/C Interface' on exopi, you'll find
> that lapack is the only package running this crap. It has no side effects
> as far as I can tell, so let's skip it until someone who likes to roll in
> cmake finds the time and motivation to track this down.
> 
> Index: patches/patch-CBLAS_CMakeLists_txt
> ===================================================================
> RCS file: patches/patch-CBLAS_CMakeLists_txt
> diff -N patches/patch-CBLAS_CMakeLists_txt
> --- /dev/null	1 Jan 1970 00:00:00 -0000
> +++ patches/patch-CBLAS_CMakeLists_txt	29 Oct 2025 22:17:58 -0000
> @@ -0,0 +1,12 @@
> +Index: CBLAS/CMakeLists.txt
> +--- CBLAS/CMakeLists.txt.orig
> ++++ CBLAS/CMakeLists.txt
> +@@ -10,7 +10,7 @@ if(CMAKE_Fortran_COMPILER)
> +   enable_language(Fortran)
> +   include(FortranCInterface)
> +   ## Ensure that the fortran compiler and c compiler specified are compatible
> +-  FortranCInterface_VERIFY()
> ++  #FortranCInterface_VERIFY()
> +   FortranCInterface_HEADER(${LAPACK_BINARY_DIR}/include/cblas_mangling.h
> +                           MACRO_NAMESPACE "F77_"
> +                           SYMBOL_NAMESPACE "F77_")
> Index: patches/patch-LAPACKE_include_CMakeLists_txt
> ===================================================================
> RCS file: patches/patch-LAPACKE_include_CMakeLists_txt
> diff -N patches/patch-LAPACKE_include_CMakeLists_txt
> --- /dev/null	1 Jan 1970 00:00:00 -0000
> +++ patches/patch-LAPACKE_include_CMakeLists_txt	29 Oct 2025 22:18:03 -0000
> @@ -0,0 +1,12 @@
> +Index: LAPACKE/include/CMakeLists.txt
> +--- LAPACKE/include/CMakeLists.txt.orig
> ++++ LAPACKE/include/CMakeLists.txt
> +@@ -14,7 +14,7 @@ if(CMAKE_Fortran_COMPILER AND CMAKE_C_COMPILER)
> +   enable_language(C)
> +   include(FortranCInterface)
> +   ## Ensure that the fortran compiler and c compiler specified are compatible
> +-  FortranCInterface_VERIFY()
> ++  #FortranCInterface_VERIFY()
> +   FortranCInterface_HEADER(${LAPACK_BINARY_DIR}/include/lapacke_mangling.h
> +     MACRO_NAMESPACE "LAPACK_"
> +     SYMBOL_NAMESPACE "LAPACK_")
>