From 8f7dec8ee149aa00d43b7f19ee7d8027cbf8fb5d Mon Sep 17 00:00:00 2001
From: Feng Xiao <xfxyjwf@gmail.com>
Date: Tue, 2 Dec 2014 14:15:26 -0800
Subject: Add a ./configure flag "DIST_LANG" to select which langauge to
 include in a distribution package.

---
 configure.ac | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 58c1bf37..c3b04e0c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,14 @@ AC_CONFIG_SRCDIR(src/google/protobuf/message.cc)
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
+AC_ARG_VAR(DIST_LANG, [language to include in the distribution package (i.e., make dist)])
+case "$DIST_LANG" in
+  "") DIST_LANG=cpp ;;
+  all | cpp | java | python | javanano) ;;
+  *) AC_MSG_FAILURE([unknown language: $DIST_LANG]) ;;
+esac
+AC_SUBST(DIST_LANG)
+
 # autoconf's default CXXFLAGS are usually "-g -O2".  These aren't necessarily
 # the best choice for libprotobuf.
 AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"],
-- 
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