Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into...

[mirror_qemu.git] / configure

diff --git a/configure b/configure
index 3a9bee2621ac3226fbdd8403f85913f650ad485c..5b183c2e391bfa4553fbe061c23bb419bebe8310 100755 (executable)
--- a/configure
+++ b/configure
@@ -899,7 +899,18 @@ fi
 
 : ${make=${MAKE-make}}
 : ${install=${INSTALL-install}}
-: ${python=${PYTHON-python}}
+# We prefer python 3.x. A bare 'python' is traditionally
+# python 2.x, but some distros have it as python 3.x, so
+# we check that before python2
+python=
+for binary in "${PYTHON-python3}" python python2
+do
+    if has "$binary"
+    then
+        python="$binary"
+        break
+    fi
+done
 : ${smbd=${SMBD-/usr/sbin/smbd}}
 
 # Default objcc to clang if available, otherwise use CC
@@ -1115,6 +1126,8 @@ for opt do
   ;;
   --disable-slirp) slirp="no"
   ;;
+  --enable-slirp=git) slirp="git"
+  ;;
   --enable-slirp=system) slirp="system"
   ;;
   --disable-vde) vde="no"
@@ -1821,8 +1834,9 @@ fi
 # Remove old dependency files to make sure that they get properly regenerated
 rm -f *-config-devices.mak.d
 
-if ! has $python; then
-  error_exit "Python not found. Use --python=/path/to/python"
+if test -z "$python"
+then
+    error_exit "Python not found. Use --python=/path/to/python"
 fi
 
 # Note that if the Python conditional here evaluates True we will exit
@@ -5868,6 +5882,8 @@ case "$slirp" in
   "" | yes)
     if $pkg_config slirp; then
       slirp=system
+    elif test -e "${source_path}/.git" && test $git_update = 'yes' ; then
+      slirp=git
     elif test -e "${source_path}/slirp/Makefile" ; then
       slirp=internal
     elif test -z "$slirp" ; then
@@ -5885,7 +5901,10 @@ case "$slirp" in
 esac
 
 case "$slirp" in
-  internal)
+  git | internal)
+    if test "$slirp" = git; then
+      git_submodules="${git_submodules} slirp"
+    fi
     mkdir -p slirp
     slirp_cflags="-I\$(SRC_PATH)/slirp/src -I\$(BUILD_DIR)/slirp/src"
     slirp_libs="-L\$(BUILD_DIR)/slirp -lslirp"
@@ -6548,7 +6567,7 @@ if test "$slirp" != "no"; then
   echo "SLIRP_CFLAGS=$slirp_cflags" >> $config_host_mak
   echo "SLIRP_LIBS=$slirp_libs" >> $config_host_mak
 fi
-if [ "$slirp" = "internal" ]; then
+if [ "$slirp" = "git" -o "$slirp" = "internal" ]; then
     echo "config-host.h: subdir-slirp" >> $config_host_mak
 fi
 if test "$vde" = "yes" ; then