build: remove git submodule handling from main makefile

The only remaining user of submodules at build time is roms/SLOF,
which is handled in pc-bios/s390-ccw/Makefile.  Remove the relevant
code from the main makefile.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

.gitlab-ci.d/buildtest-template.yml

@@ -42,8 +42,7 @@
   stage: test
   image: $CI_REGISTRY_IMAGE/qemu/$IMAGE:latest
   script:
-    - scripts/git-submodule.sh update
-        roms/SLOF $(sed -n '/GIT_SUBMODULES=/ s/.*=// p' build/config-host.mak)
+    - scripts/git-submodule.sh update roms/SLOF
     - meson subprojects download $(cd build/subprojects && echo *)
     - cd build
     - find . -type f -exec touch {} +

Makefile

@@ -45,16 +45,6 @@ include config-host.mak
 include Makefile.prereqs
 Makefile.prereqs: config-host.mak
 
-git-submodule-update:
-.git-submodule-status: git-submodule-update config-host.mak
-Makefile: .git-submodule-status
-
-.PHONY: git-submodule-update
-git-submodule-update:
-ifneq ($(GIT_SUBMODULES_ACTION),ignore)
-	$(quiet-@)GIT=git "$(SRC_PATH)/scripts/git-submodule.sh" $(GIT_SUBMODULES_ACTION) $(GIT_SUBMODULES)
-endif
-
 # 0. ensure the build tree is okay
 
 # Check that we're not trying to do an out-of-tree build from

configure

@@ -253,7 +253,6 @@ else
     git_submodules_action="ignore"
 fi
 
-git_submodules=""
 git="git"
 debug_tcg="no"
 docs="auto"
@@ -1657,18 +1656,12 @@ fi
 #######################################
 # generate config-host.mak
 
-if ! (GIT=git "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
-    exit 1
-fi
-
 config_host_mak="config-host.mak"
 
 echo "# Automatically generated by configure - do not modify" > $config_host_mak
 echo >> $config_host_mak
 
 echo all: >> $config_host_mak
-echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
-echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
 
 if test "$debug_tcg" = "yes" ; then
   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak

meson.build

@@ -3976,7 +3976,6 @@ endif
 summary_info = {}
 summary_info += {'Build directory':   meson.current_build_dir()}
 summary_info += {'Source path':       meson.current_source_dir()}
-summary_info += {'GIT submodules':    config_host['GIT_SUBMODULES']}
 summary_info += {'Download dependencies': get_option('wrap_mode') != 'nodownload'}
 summary(summary_info, bool_yn: true, section: 'Build environment')