[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

@@ -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

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