Re: Minor build failure on linux-to-mingw32 cross-compilation

[Paul Eggert]

"Tim Van Holder" <address@hidden> writes:

> when building sed 3.1.5 I ran into the following problem:
> configure correctly detected that mingw32 has alloca but
> no working alloca.h; however, regex-internal.h simply
> includes alloca.h unconditionally, breaking the build.

Surely this is because sed is using gnulib regex-internal.h,
and the gnulib regex module assumes the alloca module,
and the alloca module provides alloca.h if the system does not.

If so, we need to figure out why alloca.h wasn't provided,
rather than complicate the source code to provide it for us.