[Qemu-trivial] [PATCH v3 3/4] .travis.yml: pre-seed sub-modules for speed

[Alex Bennée]

A significant portion of the build time is spent initialising all the
sub-modules we use in the source tree. Often this is almost as long as
the build itself. By pre-seeding the .git/modules tree this will
hopefully improve things.

Signed-off-by: Alex Bennée <address@hidden>
Reviewed-by: Alexander Graf <address@hidden>
Reviewed-by: Brian Jackson <address@hidden>

---
v2
  - use wget -O - | tar as suggested by agraf

diff --git a/.travis.yml b/.travis.yml
index 57cb95e..e927da2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -37,7 +37,11 @@ env:
     - TARGETS=unicore32-softmmu,unicore32-linux-user
     # Group remaining softmmu only targets into one build
     - 
TARGETS=lm32-softmmu,moxie-softmmu,tricore-softmmu,xtensa-softmmu,xtensaeb-softmmu
+git:
+  # we want to do this ourselves
+  submodules: false
 before_install:
+  - wget -O - 
http://people.linaro.org/~alex.bennee/qemu-submodule-git-seed.tar.xz | tar -xvJ
   - git submodule update --init --recursive
   - sudo apt-get update -qq
   - sudo apt-get install -qq ${CORE_PKGS} ${NET_PKGS} ${GUI_PKGS} ${EXTRA_PKGS}
-- 
2.1.0