if softmmu is not enabled, we disable by default fdt and
slirp as they are only used by -softmmu targets.

A side effect is the git submodules are not cloned
if they are not needed.

Clone and build can be forced with --enable-fdt and
--enable-slirp.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 configure | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/configure b/configure
index b091b82cb371..4b3853298c79 100755
--- a/configure
+++ b/configure
@@ -4066,6 +4066,11 @@ if test "$fdt_required" = "yes"; then
   fdt=yes
 fi
 
+# linux-user doesn't need fdt
+if test -z "$fdt" -a "$softmmu" != "yes" ; then
+    fdt="no"
+fi
+
 if test "$fdt" != "no" ; then
   fdt_libs="-lfdt"
   # explicitly check for libfdt_env.h as it is missing in some stable installs
@@ -5923,6 +5928,11 @@ fi
 ##########################################
 # check for slirp
 
+# linux-user doesn't need slirp
+if test -z "$slirp" -a "$softmmu" != "yes" ; then
+    slirp="no"
+fi
+
 case "$slirp" in
   "" | yes)
     if $pkg_config slirp; then
-- 
2.21.0

Hi

On Fri, Jun 21, 2019 at 3:05 PM Laurent Vivier <lvivier@redhat.com> wrote:
>
> if softmmu is not enabled, we disable by default fdt and
> slirp as they are only used by -softmmu targets.
>
> A side effect is the git submodules are not cloned
> if they are not needed.
>
> Clone and build can be forced with --enable-fdt and
> --enable-slirp.
>
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>

lgtm
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

> ---
>  configure | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/configure b/configure
> index b091b82cb371..4b3853298c79 100755
> --- a/configure
> +++ b/configure
> @@ -4066,6 +4066,11 @@ if test "$fdt_required" = "yes"; then
>    fdt=yes
>  fi
>
> +# linux-user doesn't need fdt
> +if test -z "$fdt" -a "$softmmu" != "yes" ; then
> +    fdt="no"
> +fi
> +
>  if test "$fdt" != "no" ; then
>    fdt_libs="-lfdt"
>    # explicitly check for libfdt_env.h as it is missing in some stable installs
> @@ -5923,6 +5928,11 @@ fi
>  ##########################################
>  # check for slirp
>
> +# linux-user doesn't need slirp
> +if test -z "$slirp" -a "$softmmu" != "yes" ; then
> +    slirp="no"
> +fi
> +
>  case "$slirp" in
>    "" | yes)
>      if $pkg_config slirp; then
> --
> 2.21.0
>

On 6/21/19 3:05 PM, Laurent Vivier wrote:
> if softmmu is not enabled, we disable by default fdt and
> slirp as they are only used by -softmmu targets.
> 
> A side effect is the git submodules are not cloned
> if they are not needed.
> 
> Clone and build can be forced with --enable-fdt and
> --enable-slirp.
> 
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
>  configure | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/configure b/configure
> index b091b82cb371..4b3853298c79 100755
> --- a/configure
> +++ b/configure
> @@ -4066,6 +4066,11 @@ if test "$fdt_required" = "yes"; then
>    fdt=yes
>  fi
>  
> +# linux-user doesn't need fdt

"fdt is only required when building softmmu targets"

(we don't need it to build tools such qemu-img)

> +if test -z "$fdt" -a "$softmmu" != "yes" ; then
> +    fdt="no"
> +fi
> +
>  if test "$fdt" != "no" ; then
>    fdt_libs="-lfdt"
>    # explicitly check for libfdt_env.h as it is missing in some stable installs
> @@ -5923,6 +5928,11 @@ fi
>  ##########################################
>  # check for slirp
>  
> +# linux-user doesn't need slirp

"slirp is only required when building softmmu targets"

> +if test -z "$slirp" -a "$softmmu" != "yes" ; then
> +    slirp="no"
> +fi
> +
>  case "$slirp" in
>    "" | yes)
>      if $pkg_config slirp; then
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Le 21/06/2019 à 15:05, Laurent Vivier a écrit :
> if softmmu is not enabled, we disable by default fdt and
> slirp as they are only used by -softmmu targets.
> 
> A side effect is the git submodules are not cloned
> if they are not needed.
> 
> Clone and build can be forced with --enable-fdt and
> --enable-slirp.
> 
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
>  configure | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/configure b/configure
> index b091b82cb371..4b3853298c79 100755
> --- a/configure
> +++ b/configure
> @@ -4066,6 +4066,11 @@ if test "$fdt_required" = "yes"; then
>    fdt=yes
>  fi
>  
> +# linux-user doesn't need fdt
> +if test -z "$fdt" -a "$softmmu" != "yes" ; then
> +    fdt="no"
> +fi
> +
>  if test "$fdt" != "no" ; then
>    fdt_libs="-lfdt"
>    # explicitly check for libfdt_env.h as it is missing in some stable installs
> @@ -5923,6 +5928,11 @@ fi
>  ##########################################
>  # check for slirp
>  
> +# linux-user doesn't need slirp
> +if test -z "$slirp" -a "$softmmu" != "yes" ; then
> +    slirp="no"
> +fi
> +
>  case "$slirp" in
>    "" | yes)
>      if $pkg_config slirp; then
> 

I've updated the comments according to Philippe's comments and applied
it to my linux-user branch.

Thanks,
Laurent