On Mon, Aug 12, 2024 at 11:41:20AM +0200, Antonio Caggiano wrote:
> -M is not a valid flag for MacOS ld.
> 
> Signed-off-by: Antonio Caggiano <quic_acagg...@quicinc.com>
> ---
>  m4/guestfs-c.m4 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/m4/guestfs-c.m4 b/m4/guestfs-c.m4
> index c6d33183d..8035a9729 100644
> --- a/m4/guestfs-c.m4
> +++ b/m4/guestfs-c.m4
> @@ -57,7 +57,7 @@ CFLAGS="$CFLAGS -fno-strict-overflow -Wno-strict-overflow"
>  dnl Work out how to specify the linker script to the linker.
>  VERSION_SCRIPT_FLAGS=-Wl,--version-script=
>  `/usr/bin/ld --help 2>&1 | grep -- --version-script >/dev/null` || \
> -    VERSION_SCRIPT_FLAGS="-Wl,-M -Wl,"
> +    VERSION_SCRIPT_FLAGS="-Wl,-map -Wl,"
>  AC_SUBST(VERSION_SCRIPT_FLAGS)

Unfortunately -map isn't a flag which Linux's linker understands.

The way to do this is to conditionalise the code based on the $host_os
variable which probably contains "darwin*" for macOS.  I'm sure there
are many examples on line, but here are some from nbdkit:

https://gitlab.com/nbdkit/nbdkit/-/blob/7a72d15a663cf12fdb74219f64275602369cce1c/configure.ac#L263

https://gitlab.com/nbdkit/nbdkit/-/blob/7a72d15a663cf12fdb74219f64275602369cce1c/configure.ac#L556

https://gitlab.com/nbdkit/nbdkit/-/blob/7a72d15a663cf12fdb74219f64275602369cce1c/configure.ac#L589

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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