The tests/tcg Makefile invocation contains the paths to DOCKER_SCRIPT
and TARGET.

One can just resolve the path to docker.py in configure so that submakes
do not need the DOCKER_SCRIPT variable.  In order to remove the TARGET
variable, create a config-target.mak file in tests/tcg/$TARGET.  For now
config-$target.mak is created before the check for compiler presence,
while tests/tcg/$TARGET is created afterwards.  This is temporary.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 configure                 | 23 ++++++++++++++---------
 tests/Makefile.include    |  9 +++------
 tests/tcg/Makefile.target |  2 +-
 3 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/configure b/configure
index 0fd5a3cfad..9d49ea4c5b 100755
--- a/configure
+++ b/configure
@@ -1824,6 +1824,9 @@ if test $use_containers = "yes"; then
         podman) container=podman ;;
         no) container=no ;;
     esac
+    if test "$container" != "no"; then
+        docker_py="$python $source_path/tests/docker/docker.py --engine $container"
+    fi
 fi
 
 # cross compilers defaults, can be overridden with --cross-cc-ARCH
@@ -2130,16 +2133,16 @@ write_target_makefile() {
 write_container_target_makefile() {
   echo "$1: docker-image-$container_image" >> Makefile.prereqs
   if test -n "$container_cross_cc"; then
-    echo "CC=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
-    echo "CCAS=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
+    echo "CC=$docker_py cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
+    echo "CCAS=$docker_py cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
   fi
-  echo "AR=\$(DOCKER_SCRIPT) cc --cc $container_cross_ar -i qemu/$container_image -s $source_path --"
-  echo "AS=\$(DOCKER_SCRIPT) cc --cc $container_cross_as -i qemu/$container_image -s $source_path --"
-  echo "LD=\$(DOCKER_SCRIPT) cc --cc $container_cross_ld -i qemu/$container_image -s $source_path --"
-  echo "NM=\$(DOCKER_SCRIPT) cc --cc $container_cross_nm -i qemu/$container_image -s $source_path --"
-  echo "OBJCOPY=\$(DOCKER_SCRIPT) cc --cc $container_cross_objcopy -i qemu/$container_image -s $source_path --"
-  echo "RANLIB=\$(DOCKER_SCRIPT) cc --cc $container_cross_ranlib -i qemu/$container_image -s $source_path --"
-  echo "STRIP=\$(DOCKER_SCRIPT) cc --cc $container_cross_strip -i qemu/$container_image -s $source_path --"
+  echo "AR=$docker_py cc --cc $container_cross_ar -i qemu/$container_image -s $source_path --"
+  echo "AS=$docker_py cc --cc $container_cross_as -i qemu/$container_image -s $source_path --"
+  echo "LD=$docker_py cc --cc $container_cross_ld -i qemu/$container_image -s $source_path --"
+  echo "NM=$docker_py cc --cc $container_cross_nm -i qemu/$container_image -s $source_path --"
+  echo "OBJCOPY=$docker_py cc --cc $container_cross_objcopy -i qemu/$container_image -s $source_path --"
+  echo "RANLIB=$docker_py cc --cc $container_cross_ranlib -i qemu/$container_image -s $source_path --"
+  echo "STRIP=$docker_py cc --cc $container_cross_strip -i qemu/$container_image -s $source_path --"
 }
 
 
@@ -2597,6 +2600,8 @@ for target in $target_list; do
   fi
   if test $got_cross_cc = yes; then
       mkdir -p tests/tcg/$target
+      ln -sf ../config-$target.mak tests/tcg/$target/config-target.mak
+      echo "TARGET=$target" >> $config_target_mak
       echo "QEMU=$PWD/$qemu" >> $config_target_mak
       echo "EXTRA_CFLAGS=$target_cflags" >> $config_target_mak
       echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> Makefile.prereqs
diff --git a/tests/Makefile.include b/tests/Makefile.include
index f4ba4027ea..f2182ead1e 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -47,23 +47,20 @@ $(foreach TARGET,$(TCG_TESTS_TARGETS), \
 .PHONY: $(TCG_TESTS_TARGETS:%=build-tcg-tests-%)
 $(TCG_TESTS_TARGETS:%=build-tcg-tests-%): build-tcg-tests-%: $(BUILD_DIR)/tests/tcg/config-%.mak
 	$(call quiet-command, \
-            $(MAKE) -C tests/tcg/$* -f ../Makefile.target $(SUBDIR_MAKEFLAGS) \
-                        DOCKER_SCRIPT="$(DOCKER_SCRIPT)" \
-                        TARGET="$*" SRC_PATH="$(SRC_PATH)", \
+            $(MAKE) -C tests/tcg/$* -f ../Makefile.target $(SUBDIR_MAKEFLAGS), \
         "BUILD","$* guest-tests")
 
 .PHONY: $(TCG_TESTS_TARGETS:%=run-tcg-tests-%)
 $(TCG_TESTS_TARGETS:%=run-tcg-tests-%): run-tcg-tests-%: build-tcg-tests-%
 	$(call quiet-command, \
            $(MAKE) -C tests/tcg/$* -f ../Makefile.target $(SUBDIR_MAKEFLAGS) \
-                        TARGET="$*" SRC_PATH="$(SRC_PATH)" SPEED=$(SPEED) run, \
+                        SPEED=$(SPEED) run, \
         "RUN", "$* guest-tests")
 
 .PHONY: $(TCG_TESTS_TARGETS:%=clean-tcg-tests-%)
 $(TCG_TESTS_TARGETS:%=clean-tcg-tests-%): clean-tcg-tests-%:
 	$(call quiet-command, \
-           $(MAKE) -C tests/tcg/$* -f ../Makefile.target $(SUBDIR_MAKEFLAGS) \
-                        TARGET="$*" SRC_PATH="$(SRC_PATH)" clean, \
+           $(MAKE) -C tests/tcg/$* -f ../Makefile.target $(SUBDIR_MAKEFLAGS) clean, \
         "CLEAN", "$* guest-tests")
 
 .PHONY: build-tcg
diff --git a/tests/tcg/Makefile.target b/tests/tcg/Makefile.target
index f427a0304e..1e1c7097c6 100644
--- a/tests/tcg/Makefile.target
+++ b/tests/tcg/Makefile.target
@@ -31,7 +31,7 @@
 
 all:
 -include ../config-host.mak
--include ../config-$(TARGET).mak
+-include config-target.mak
 
 # Get semihosting definitions for user-mode emulation
 ifeq ($(filter %-softmmu, $(TARGET)),)
-- 
2.36.1