travis-ci: add script for travis-ci deps

Add scripts/travis-ci-deps.sh script to download and build extra
travis-ci build and test dependencies. For now this is only the
updated autotools versions that have not made it into travis.

scripts/travis-ci-deps.sh

@@ -0,0 +1,113 @@
+#!/bin/bash
+
+prefix=$HOME/local
+cachedir=$HOME/local/.cache
+
+#
+# Ordered list of software to download and install into $prefix.
+#  NOTE: Code currently assumes .tar.gz suffix...
+#
+downloads="\
+https://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz \
+https://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz \
+https://ftp.gnu.org/gnu/libtool/libtool-2.4.6.tar.gz"
+
+declare -r prog=${0##*/}
+declare -r long_opts="prefix:,cachedir:,verbose,printenv"
+declare -r short_opts="vp:c:P"
+declare -r usage="\
+\n
+Usage: $prog [OPTIONS]\n\
+Download and install to a local prefix (default=$prefix)
+the travis-ci dependencies for building pdsh\n\
+\n\
+Options:\n\
+ -v, --verbose           Be verbose.\n\
+ -P, --printenv          Print environment variables to stdout\n\
+ -c, --cachedir=DIR      Check for precompiled dependency cache in DIR\n\
+ -e, --max-cache-age=N   Expire cache in N days from creation\n\
+ -p, --prefix=DIR        Install software into prefix\n
+"
+
+die() { echo -e "$prog: $@"; exit 1; }
+say() { echo -e "$prog: $@"; }
+debug() { test "$verbose" = "t" && say "$@"; }
+
+GETOPTS=`/usr/bin/getopt -u -o $short_opts -l $long_opts -n $prog -- $@`
+if test $? != 0; then
+    die "$usage"
+fi
+
+eval set -- "$GETOPTS"
+while true; do
+    case "$1" in
+      -v|--verbose)          verbose=t;     shift   ;;
+      -c|--cachedir)         cachedir="$2"; shift 2 ;;
+      -e|--max-cache-age)    cacheage="$2"; shift 2 ;;
+      -p|--prefix)           prefix="$2";   shift 2 ;;
+      -P|--printenv)         print_env=1;   shift   ;;
+      --)                    shift ; break;         ;;
+      *)                     die "Invalid option '$1'\n$usage" ;;
+    esac
+done
+
+print_env () {
+    echo "LD_LIBRARY_PATH=${prefix}/lib:$LD_LIBRARY_PATH"
+    echo "CPPFLAGS=-I${prefix}/include"
+    echo "LDFLAGS=-L${prefix}/lib"
+    echo "PKG_CONFIG_PATH=${prefix}/lib/pkgconfig:${prefix}/share/pkgconfig"
+    echo "PATH=${HOME}/.local/bin:${HOME}/local/usr/bin:${prefix}/bin:${PATH}"
+    echo "export PATH PKG_CONFIG_PATH LDFLAGS CPPFLAGS LD_LIBRARY_PATH"
+}
+
+if test -n "$print_env"; then 
+   print_env
+   exit 0
+fi
+
+eval "${print_env}"
+
+sanitize ()
+{
+    # Sanitize cache name
+    echo $1 | sed 's/[\t /\]/_/g'
+}
+
+check_cache ()
+{
+    test -n "$cachedir" || return 1
+    local url=$(sanitize $1)
+    local cachefile="${cachedir}/${url}"
+    test -f "${cachefile}" || return 1
+    test -n "$cacheage"    || return 0
+
+    local ctime=$(stat -c%Y ${cachefile})
+    local maxage=$((${cacheage}*86400))
+    test $ctime -gt $maxage && return 1
+}
+
+add_cache ()
+{
+    test -n "$cachedir" || return 0
+    mkdir -p "${cachedir}" &&
+    touch "${cachedir}/$(sanitize ${1})"
+}
+
+for pkg in $downloads; do
+    name=$(basename ${pkg} .tar.gz)
+    if check_cache "$name"; then
+       say "Using cached version of ${name}"
+       continue
+    fi
+    mkdir -p ${name}  || die "Failed to mkdir ${name}"
+    (
+      cd ${name} &&
+      curl -L -O --insecure ${pkg} || die "Failed to download ${pkg}"
+      tar --strip-components=1 -xf *.tar.gz || die "Failed to un-tar ${name}"
+      CC=gcc ./configure --prefix=${prefix} \
+                  --sysconfdir=${prefix}/etc || : &&
+      make PREFIX=${prefix} &&
+      make PREFIX=${prefix} install
+    ) || die "Failed to build and install $name"
+    add_cache "$name"
+done