[PATCH v2] configure: Only build s390-ccw BIOS when system emulation is built

[Philippe Mathieu-Daudé]

It is pointless to build the s390-ccw BIOS when only user-mode
emulation is built. Only build it when s390 system mode emulation
is selected.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
v2: Restrict to s390x-softmmu (thuth)

We could move the whole block into the case(), but
1/ it doesn't look nice
2/ it doesn't match the rest of this file code style

Supersedes: <20210124161740.2502786-1-f4bug@amsat.org>
---
 configure | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index dcc5ea7d630..997fb0761a5 100755
--- a/configure
+++ b/configure
@@ -461,6 +461,7 @@ skip_meson=no
 gettext="auto"
 fuse="auto"
 fuse_lseek="auto"
+s390_ccw_bios="no"
 
 malloc_trim="auto"
 
@@ -5373,7 +5374,11 @@ if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } 
&& \
 fi
 
 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
-if test "$cpu" = "s390x" ; then
+case $target_list in
+  *"s390x-softmmu"*) s390_ccw_bios=yes
+  ;;
+esac
+if test "$s390_ccw_bios" = yes; then
   write_c_skeleton
   if compile_prog "-march=z900" ""; then
     roms="$roms s390-ccw"
-- 
2.26.2