[Spice-devel] [spice-common 1/2] build: Ensure we link with -lm if needed

[Frediano Ziglio]

> 
> lines.c uses hypot(), which is found in libm on some systems.
> 

Do you remember which systems? FreeBSD ?
I saw this issue or maybe somebody reporting it.

> Signed-off-by: Christophe Fergeau <cfergeau at redhat.com>
> ---
>  m4/spice-deps.m4 | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/m4/spice-deps.m4 b/m4/spice-deps.m4
> index 7c0cca4..cf0e048 100644
> --- a/m4/spice-deps.m4
> +++ b/m4/spice-deps.m4
> @@ -64,6 +64,10 @@ AC_DEFUN([SPICE_CHECK_SYSDEPS], [
>      AC_FUNC_ERROR_AT_LINE
>      AC_FUNC_FORK
>      AC_CHECK_FUNCS([dup2 floor inet_ntoa memmove memset pow sqrt])
> +    AC_SEARCH_LIBS([hypot], [m], [], [
> +        AC_MSG_ERROR([unable to find the hypot() function])
> +    ])
> +
>  ])
>  
>  

Otherwise,
Acked-by: Frediano Ziglio <fziglio at redhat.com>

Frediano