[Qemu-devel] [PATCH] configure: Don't implicitly hardcode list of KVM architectures

[Peter Maydell <peter.maydell@linaro.org>]

The code creating the symlink from linux-headers/asm to the
architecture specific linux-headers/asm-$arch directory was
implicitly hardcoding a list of KVM supporting architectures.
Add a default case for the common "Linux architecture name and
QEMU CPU name match" case, so future architectures will only
need to add code if they've managed to get mismatched names.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
This means there's now only one place where configure has a
list of KVM enabled targets (the check where we set CONFIG_KVM).
I think we have to have one list, but we don't need to have
more than one...

NB: this patch means we'll now set up an asm/ link for
s390 as well as s390x. That should be harmless (s390 can't be
trying to include any headers from asm/ or it wouldn't build).

 configure |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 0a3896e..c8d2895 100755
--- a/configure
+++ b/configure
@@ -3482,15 +3482,23 @@ if test "$linux" = "yes" ; then
   mkdir -p linux-headers
   case "$cpu" in
   i386|x86_64)
-    symlink "$source_path/linux-headers/asm-x86" linux-headers/asm
+    linux_arch=x86
     ;;
   ppcemb|ppc|ppc64)
-    symlink "$source_path/linux-headers/asm-powerpc" linux-headers/asm
+    linux_arch=powerpc
     ;;
   s390x)
-    symlink "$source_path/linux-headers/asm-s390" linux-headers/asm
+    linux_arch=s390
+    ;;
+  *)
+    # For most CPUs the kernel architecture name and QEMU CPU name match.
+    linux_arch="$cpu"
     ;;
   esac
+    # For non-KVM architectures we will not have asm headers.
+    if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
+        symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
+    fi
 fi
 
 for target in $target_list; do
-- 
1.7.5.4