Compiles a static xvfb for the Heroku platform.

build_xvfb

#!/bin/sh
#
# Compiles a static xvfb for the Heroku platform.
#
# This script is a conglomeration of:
#   * https://github.com/ddollar/heroku-buildpack-apt
#   * http://stackoverflow.com/questions/14845291/compile-static-linked-binary-of-xvfb
#   * gumption

set -e # fail fast
#set -x # debug

alias indent="sed -e 's/^/    /'"

APT_ROOT=`mktemp -d`
echo "Building xvfb in ${APT_ROOT}"

BUILD_DIR="$APT_ROOT/build"
CACHE_DIR="$APT_ROOT/cache"
mkdir -p $BUILD_DIR $CACHE_DIR

cd $BUILD_DIR

# build-essential: compile tools
# libdrm2: we'll need to configure xorg-server later
# libtirpc-dev: provides static versions of some functions which are dynamic only in eglibc
cat > $BUILD_DIR/Aptfile <<EOF
xvfb
build-essential
libdrm2
libtirpc-dev
EOF

echo "Fetching apt buildpack"
curl -Oq https://raw.githubusercontent.com/ddollar/heroku-buildpack-apt/master/bin/compile
chmod u+x compile

echo "Running apt buildpack"
./compile $BUILD_DIR $CACHE_DIR | indent

APT_OPTIONS="-o debug::nolocking=true -o dir::etc::sourcelist=${APT_ROOT}/apt-sources.list -o dir::cache=${APT_ROOT}/cache/apt/cache -o dir::state=${APT_ROOT}/cache/apt/state"

echo "Enabling APT source repos"
cp /etc/apt/sources.list $APT_ROOT/apt-sources.list
cat /etc/apt/sources.list | sed 's/^deb /deb-src /' >> $APT_ROOT/apt-sources.list
apt-get $APT_OPTIONS update | indent

echo "Downloading xorg-server source"
apt-get $APT_OPTIONS source xorg-server | indent

echo "Configuring xorg-server"
cd xorg-server-1.15.1
./configure --enable-static | indent

echo "Building xorg-server"
make | indent

cd hw/vfb

echo "Cleaning xvfb"
make clean | indent

# LDFLAGS=-all-static asks libtool to do static linking
# LD_EXPORT_SYMBOLS_FLAGS= causes --export-dynamic to be omitted
# LIBS='...' fills in missing dependencies for static libraries
echo "Recompiling xvfb"
make LDFLAGS=-all-static LD_EXPORT_SYMBOLS_FLAG= LIBS='-lfreetype -lgpg-error -lfontenc -ltirpc -lz -lbz2 -lm -lrt -lpthread' | indent

did you test on the latest code?

I have not