Re: [PATCH] configure / util: Auto-detect the availability of openpty()

[Michele Denber <denber@mindspring.com>]

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On 07/02/20 10:39, Thomas Huth wrote:
> Recent versions of Solaris (v11.4) now feature an openpty() function,
> too, causing a build failure since we ship our own implementation of
> openpty() for Solaris in util/qemu-openpty.c so far. Since there are
> now both variants available in the wild, with and without this function,
> let's introduce a proper HAVE_OPENPTY define for this to fix the build
> failure.
>
> Signed-off-by: Thomas Huth<thuth@redhat.com>
> ---
>   Note: Untested, since I do not have a VM with Solaris. Michele,
>   Peter, I'd really appreciate a "Tested-by:" from you here. Thanks!
Sorry, I was off on another project (doing my taxes).  Is this patch 
missing something?  It looks like there should be more.  The last line is

static void cfmakeraw (struct termios *termios_p) {

with no matching "}".


			- Michele

>
>   configure           | 9 ++++++++-
>   util/qemu-openpty.c | 4 +++-
>   2 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/configure b/configure
> index 4a22dcd563..0b5fd30fc4 100755
> --- a/configure
> +++ b/configure
> @@ -5134,10 +5134,14 @@ extern int openpty(int *am, int *as, char *name, void *termp, void *winp);
>   int main(void) { return openpty(0, 0, 0, 0, 0); }
>   EOF
>
> -if ! compile_prog "" "" ; then
> +have_openpty="no"
> +if compile_prog "" "" ; then
> +  have_openpty="yes"
> +else
>     if compile_prog "" "-lutil" ; then
>       libs_softmmu="-lutil $libs_softmmu"
>       libs_tools="-lutil $libs_tools"
> +    have_openpty="yes"
>     fi
>   fi
>
> @@ -7380,6 +7384,9 @@ fi
>   if test "$have_broken_size_max" = "yes" ; then
>       echo "HAVE_BROKEN_SIZE_MAX=y">>  $config_host_mak
>   fi
> +if test "$have_openpty" = "yes" ; then
> +    echo "HAVE_OPENPTY=y">>  $config_host_mak
> +fi
>
>   # Work around a system header bug with some kernel/XFS header
>   # versions where they both try to define 'struct fsxattr':
> diff --git a/util/qemu-openpty.c b/util/qemu-openpty.c
> index 2e8b43bdf5..14e5c8ae8f 100644
> --- a/util/qemu-openpty.c
> +++ b/util/qemu-openpty.c
> @@ -52,7 +52,8 @@
>   #endif
>
>   #ifdef __sun__
> -/* Once Solaris has openpty(), this is going to be removed. */
> +
> +#if !defined(HAVE_OPENPTY)
>   static int openpty(int *amaster, int *aslave, char *name,
>                      struct termios *termp, struct winsize *winp)
>   {
> @@ -93,6 +94,7 @@ err:
>           close(mfd);
>           return -1;
>   }
> +#endif
>
>   static void cfmakeraw (struct termios *termios_p)
>   {

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