From 8fe7958969cce2234b609122219bbc495d79d1f7 Mon Sep 17 00:00:00 2001
From: Al <albarrentine@gmail.com>
Date: Thu, 22 Dec 2016 12:24:40 -0500
Subject: [PATCH] [build] allowing --disable-data-download option to configure.
 N.B. this is mostly for people building Docker images. The data files are NOT
 optional.

---
 configure.ac    | 10 ++++++++++
 src/Makefile.am |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/configure.ac b/configure.ac
index ae44cbfd..f7cbc42d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,4 +60,14 @@ AC_CHECK_PROG([FOUND_SHUF], [shuf], [yes])
 
 AS_IF([test "x$FOUND_SHUF" = xyes],  [AC_DEFINE([HAVE_SHUF], [1], [shuf available])])
 
+AC_ARG_ENABLE([data-download],
+              [  --disable-data-download    Disable downloading data],
+              [case "${enableval}" in
+                yes)  DOWNLOAD_DATA=true ;;
+                no) DOWNLOAD_DATA=false ;;
+                *) AC_MSG_ERROR([bad value ${enableval} for --disable-data-download]) ;;
+              esac], [DOWNLOAD_DATA=true])
+
+AM_CONDITIONAL([DOWNLOAD_DATA], [test "x$DOWNLOAD_DATA" = "xtrue"])
+
 AC_OUTPUT
diff --git a/src/Makefile.am b/src/Makefile.am
index 79f2fd0f..82c9cecc 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -64,8 +64,10 @@ language_classifier_test_CFLAGS = $(CFLAGS_O3)
 
 pkginclude_HEADERS = libpostal.h
 
+if DOWNLOAD_DATA
 all-local:
 	${srcdir}/libpostal_data download all $(datadir)/libpostal
+endif
 
 lexer: scanner.re
 	re2c -F -s -b -8 -o scanner.c scanner.re