From cb20e19028a8996de9305502ba5e5da3bd1181bf Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Tue, 2 Apr 2019 09:19:36 +0200
Subject: [PATCH] configure.ac: add --disable-pie option

PIE is not necessarily supported on all architectures, so add an option
to allow the user to disable the PIE.

This fixes the build on the m68k architecture:
 - http://autobuild.buildroot.org/results/25985bbc160e3d62b23c4c613b2a81f3711621e3

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status: merged]
---
 Makefile.am  |  2 +-
 configure.ac | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 638198d..332bd67 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 ACLOCAL_AMFLAGS = -I m4
-AM_LDFLAGS = -pie
+AM_LDFLAGS = @PIE_LDFLAGS@
 
 doc_DATA = \
        README.mailserver \
diff --git a/configure.ac b/configure.ac
index 095ff86..5af4235 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,6 +55,18 @@ AS_IF([test "x${prefix}" = "xNONE"], [
   AC_DEFINE_UNQUOTED(PACKAGE_LOCALE_DIR, "${prefix}/share/locale", [Locale-specific data directory])
 ])
 
+# ================
+# Check for ldflags
+# ================
+AC_ARG_ENABLE([pie],
+   [AS_HELP_STRING([--disable-pie], [Disable Position Independent Executable])],
+   [enable_pie="$enableval"],
+   [enable_pie=yes]
+)
+AS_IF([test x"$enable_pie" != "xno"], [
+    PIE_LDFLAGS="-pie"
+])
+AC_SUBST([PIE_LDFLAGS])
 
 # ================
 # Check for cflags
-- 
2.14.1