Travis: use recent autoconf 2.69 and recent autoconf-archive

.travis.yml

@@ -1,18 +1,23 @@
 language: c
+sudo: required
 compiler:
   - gcc
 env:
   global:
-    - BUILD_PKGS="libtool autoconf automake texinfo"
+    - BUILD_PKGS="libtool autoconf autoconf-archive automake texinfo"
     - BUILD_LIBS="libgmime-2.6-dev libxapian-dev guile-2.0-dev libwebkitgtk-dev"
     - TEST_PKGS="pmccabe"
   matrix:
     - EVM_EMACS=emacs-24.1-bin
     - EVM_EMACS=emacs-24.2-bin
     - EVM_EMACS=emacs-24.3-bin
+    # - EVM_EMACS=emacs-24.5-travis
+    # - EVM_EMACS=emacs-25.1-travis
 before_install:
   - git submodule update --init --recursive
-  - sudo apt-get update -qq
+  # The Ubuntu version on travis is way too old, need Autoconf 2.69
+  - sudo add-apt-repository ppa:dns/gnu -y
+  - sudo apt-get -qq update
   - sudo apt-get install -qq ${BUILD_PKGS} ${BUILD_LIBS} ${TEST_PKGS}
 install:
   - sudo mkdir /usr/local/evm
@@ -21,6 +26,10 @@ install:
   - export PATH="$HOME/.evm/bin:$PATH"
   - evm install $EVM_EMACS --use
 script:
+  # Need recent version of autoconf-archive
+  - curl http://nl.mirror.babylon.network/gnu/autoconf-archive/autoconf-archive-2016.09.16.tar.xz -o /tmp/aa.tar.xz && tar xf /tmp/aa.tar.xz
+  - cp autoconf-archive-2016.09.16/m4/*.m4 m4/
   - ./autogen.sh
+  - ./configure
   - make
   - make check