From 492763fec2bb4fa9c0c52b906feda0a2a96d866c Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Wed, 28 Nov 2018 15:47:03 +0100
Subject: Build: change back link-time-optimization default to off

I've found that if building PROJ with lto, but GDAL without lto, exceptions
thrown in PROJ are not properly captured by try {} blocks in PROJ C API,
and unexpectedly go back up to GDAL.
Might be a defect of the particular compiler I use (gcc 5.4 Ubuntu 16.04)
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 31cb2a8a..25675d6a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -151,10 +151,10 @@ AC_MSG_CHECKING([to enable LTO (link time optimization) build])
 
 AC_ARG_ENABLE(lto,
               AS_HELP_STRING([--enable-lto],
-                             [enable LTO(link time optimization) (enabled by default)]))
+                             [enable LTO(link time optimization) (disabled by default)]))
 
 FLTO_FLAG=""
-if test "x$enable_lto" = "xyes" -o "x$enable_lto" = "x"; then
+if test "x$enable_lto" = "xyes"; then
     AC_LANG_PUSH([C++])
     AX_CHECK_COMPILE_FLAG([-flto], [FLTO_FLAG="-flto"],,[$ERROR_ON_UNKNOWN_OPTIONS])
     if test "$FLTO_FLAG" != ""; then
-- 
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