From 78b0de212cc9d2f09b77fa749e5d37047566ee7c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Mon, 3 Oct 2016 13:36:10 +0200
Subject: Clean and re-run configure when --enable-native-libs is used

The OTP repository contains pre-built BEAM files that will not get
recompiled natively unless "make clean" is called first. This
commit detects when the --enable-native-libs option is used
and runs the appropriate commands.

Depending on the source of the code, this will result in the
configure step being run twice, as a Makefile is needed before
we can do "make clean". Configure will be run once otherwise.
---
 kerl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kerl b/kerl
index dbd767a..5b74a63 100755
--- a/kerl
+++ b/kerl
@@ -556,6 +556,11 @@ _do_build()
         CFLAGS="$CFLAGS" ./otp_build configure $KERL_CONFIGURE_OPTIONS >> "$LOGFILE" 2>&1
 
     fi
+    echo -n $KERL_CONFIGURE_OPTIONS | grep "--enable-native-libs" 1>/dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        make clean >> "$LOGFILE" 2>&1
+        CFLAGS="$CFLAGS" ./otp_build configure $KERL_CONFIGURE_OPTIONS >> "$LOGFILE" 2>&1
+    fi
     if [ $? -ne 0 ]; then
         show_logfile "Configure failed." "$LOGFILE"
         list_remove builds "$1 $2"
-- 
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