[PATCH v2] configure: Let SLOF be initialized by ./scripts/git-submodule.sh

[Philippe Mathieu-Daudé]

The git-submodule.sh script is called by make and initialize the
submodules listed in the GIT_SUBMODULES variable generated by
./configure.

Add SLOF when we build the ppc64-softmmu target for the pSeries
machines (which use SLOF). This fixes:

  $ ( cd ${SRC_DIR} ; git submodule update --init roms/SLOF )
  Submodule 'roms/SLOF' (https://git.qemu.org/git/SLOF.git) registered for path 
'roms/SLOF'
  Cloning into '/home/travis/build/user/qemu/roms/SLOF'...
  fatal: unable to access 'https://git.qemu.org/git/SLOF.git/': Could not 
resolve host: git.qemu.org
  fatal: clone of 'https://git.qemu.org/git/SLOF.git' into submodule path 
'/home/travis/build/user/qemu/roms/SLOF' failed
  Failed to clone 'roms/SLOF'. Retry scheduled
  Cloning into '/home/travis/build/user/qemu/roms/SLOF'...
  fatal: unable to access 'https://git.qemu.org/git/SLOF.git/': Could not 
resolve host: git.qemu.org
  fatal: clone of 'https://git.qemu.org/git/SLOF.git' into submodule path 
'/home/travis/build/user/qemu/roms/SLOF' failed
  Failed to clone 'roms/SLOF' a second time, aborting
  The command "( cd ${SRC_DIR} ; git submodule update --init roms/SLOF )" 
exited with 1.

Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
CI: https://travis-ci.org/github/philmd/qemu/jobs/698406512#L1596
---
 configure   | 12 ++++++++++++
 .travis.yml |  1 -
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 7c2adf36e5..f297a4b68f 100755
--- a/configure
+++ b/configure
@@ -2248,6 +2248,18 @@ if test "$edk2_blobs" = "yes" && ! has bzip2; then
   error_exit "The bzip2 program is required for building QEMU"
 fi
 
+###################################
+# SLOF is mandatory for the pSeries
+for target in $target_list; do
+  case $target in
+    ppc64-softmmu)
+      if test -e "${source_path}/.git" ; then
+          git_submodules="${git_submodules} roms/SLOF"
+      fi
+    ;;
+  esac
+done
+
 feature_not_found() {
   feature=$1
   remedy=$2
diff --git a/.travis.yml b/.travis.yml
index ec6367af1f..220855c1f0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -496,7 +496,6 @@ jobs:
         - CONFIG="--disable-containers 
--target-list=${MAIN_SOFTMMU_TARGETS},s390x-linux-user"
         - UNRELIABLE=true
       script:
-        - ( cd ${SRC_DIR} ; git submodule update --init roms/SLOF )
         - BUILD_RC=0 && make -j${JOBS} || BUILD_RC=$?
         - |
           if [ "$BUILD_RC" -eq 0 ] ; then
-- 
2.21.3