[Libguestfs] [PATCH nbdkit v3] tests: Improve test for libc_malloc_debug

[Richard W.M. Jones]

On Tue, Aug 24, 2021 at 03:10:40PM +0100, Richard W.M. Jones wrote:
> +dnl Does this platform have $libdir/libc_malloc_debug.so.0 (glibc >=
> +dnl 2.34)?  We have to override the idiotic exec_prefix misfeature to
> +dnl get to the real libdir.
> +real_libdir="$(
> +    if test "x$prefix" != xNONE; then
> +        exec_prefix="$prefix"
> +    else
> +        exec_prefix="$ac_default_prefix"
> +    fi
> +    eval echo $libdir
> +)"
> +LIBC_MALLOC_DEBUG="$real_libdir/libc_malloc_debug.so.0"
> +AC_MSG_CHECKING([for $LIBC_MALLOC_DEBUG])
> +AS_IF([test -r $LIBC_MALLOC_DEBUG], [
> +    have_libc_malloc_debug=yes
> +    AC_SUBST([LIBC_MALLOC_DEBUG])
> +],[have_libc_malloc_debug=no])
> +AC_MSG_RESULT([$have_libc_malloc_debug])
> +AM_CONDITIONAL([HAVE_LIBC_MALLOC_DEBUG],
> +               [test "x$have_libc_malloc_debug" = xyes])

Oh hang on here, LD_PRELOAD obeys the normal path searching?!
So I don't need any of this.

Rich.

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