autoconf formula

builds/libraries/autoconf

+#!/usr/bin/env bash
+# Build Path: /app/.heroku/python/
+
+OUT_PREFIX=$1
+
+echo "Building autoconf..."
+
+
+SOURCE_TARBALL='http://ftp.gnu.org/gnu/autoconf/autoconf-2.68.tar.gz'
+curl -L $SOURCE_TARBALL | tar xz
+
+cd autoconf-2.68
+./configure --prefix=$OUT_PREFIX
+make
+make install
\ No newline at end of file

builds/libraries/libffi

 #!/usr/bin/env bash
 # Build Path: /app/.heroku/python/
+# Build Deps: libraries/autoconf
 
 OUT_PREFIX=$1
 
-echo "Building autoconf..."
-
-
-SOURCE_TARBALL='http://ftp.gnu.org/gnu/autoconf/autoconf-2.68.tar.gz'
-curl -L $SOURCE_TARBALL | tar xz
-
-cd autoconf-2.68
-./configure --prefix=$OUT_PREFIX
-make
-make install
-cd ..
-
-# Use new Python path, containing autoconf.
+# Use new path, containing autoconf.
 export PATH="/app/.heroku/python/bin/:$PATH"
 hash -r
 
+
 echo "Building libffi..."
 
 SOURCE_TARBALL='https://github.com/atgreen/libffi/archive/master.tar.gz'