On 2026-06-21 Graham Inggs <[email protected]> wrote: > This may be related to the following change in debhelper 13.32. See > also #1139889 [1].
> [ Helmut Grohne ] > * autoconf: export standard build tools Yes it is related, if e.g. $CC is set ./configure will not search for e.g. mpigcc. if test "x$CC" = "x" then hypre_user_chose_ccompilers=no ... Also debian/rules only passes the first directory of "pkg-config --cflags-only-I mpi" to --with-MPI-include and of top of that AC_HYPRE_CHECK_MPI and AC_CHECK_FUNCS([MPI_Comm_f2c] ignore $MPIINCLUDE which was set by --with-MPI-include. cu Andreas -- "You people are noisy," Nia said. I made the gesture of agreement.

