From b6327e0fab4b0135b8377719856a7322b59165ef Mon Sep 17 00:00:00 2001
From: "K.Ohta" <whatisthis.sowhat@gmail.com>
Date: Sun, 24 Feb 2019 20:12:27 +0900
Subject: [PATCH] [Build][GCC] Fix FTBFS without setting LTO_THREADS value and
 selecting USE_LTO.

---
 source/build-cmake/params/buildvars_linux_params_gcc.dat | 12 ++++++++++--
 source/build-cmake/params/buildvars_mingw_params_gcc.dat | 11 +++++++++--
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/source/build-cmake/params/buildvars_linux_params_gcc.dat b/source/build-cmake/params/buildvars_linux_params_gcc.dat
index 0175d120f..4e90dedac 100644
--- a/source/build-cmake/params/buildvars_linux_params_gcc.dat
+++ b/source/build-cmake/params/buildvars_linux_params_gcc.dat
@@ -134,10 +134,18 @@ case ${CSP_DEBUG} in
       ;;
 esac
 
+if [ -n "${LTO_THREADS}" ] ;  then 
+   LTO_FLAGS="-flto=${LTO_THREADS} -flto-compression-level=9 ${LTO_FLAGS}"
+   LTO_FLAGS2="-flto -ffat-lto-objects"
+else
+   LTO_FLAGS=""
+   LTO_FLAGS2=""
+fi
+
 case ${USE_LTO} in
    "Yes" | "yes" | "YES" )
-       MAKEFLAGS_LINK_BASE2="-flto=${LTO_THREADS} -flto-compression-level=9 ${LTO_FLAGS} ${MAKEFLAGS_BASE2}"
-       MAKEFLAGS_BASE2="-flto -flto-compression-level=9 ${MAKEFLAGS_BASE2}"
+       MAKEFLAGS_LINK_BASE2="${LTO_FLAGS} ${MAKEFLAGS_BASE2}"
+       MAKEFLAGS_BASE2="${LTO_FLAGS2} ${MAKEFLAGS_BASE2}"
        ;;
    "No" | "no" | "NO" | * )
        MAKEFLAGS_LINK_BASE2="${MAKEFLAGS_BASE2}"
diff --git a/source/build-cmake/params/buildvars_mingw_params_gcc.dat b/source/build-cmake/params/buildvars_mingw_params_gcc.dat
index e27b13a5d..bb21dbd2b 100644
--- a/source/build-cmake/params/buildvars_mingw_params_gcc.dat
+++ b/source/build-cmake/params/buildvars_mingw_params_gcc.dat
@@ -86,10 +86,17 @@ case ${USE_STACK_PROTECTION} in
            ;;
 esac	
 
+if [ -n "${LTO_THREADS}" ] ;  then 
+   LTO_FLAGS="-flto=${LTO_THREADS} -flto-compression-level=9 ${LTO_FLAGS}"
+   LTO_FLAGS2="-flto -ffat-lto-objects"
+else
+   LTO_FLAGS=""
+   LTO_FLAGS2=""
+fi
 case ${USE_LTO} in
    "Yes" | "yes" | "YES" )
-       MAKEFLAGS_LINK_BASE="-flto=${LTO_THREADS} ${LTO_FLAGS} ${MAKEFLAGS_BASE2}"
-       MAKEFLAGS_BASE2="-flto -ffat-lto-objects ${MAKEFLAGS_BASE2}"
+       MAKEFLAGS_LINK_BASE="${LTO_FLAGS} ${MAKEFLAGS_BASE2}"
+       MAKEFLAGS_BASE2="${LTO_FLAGS2} ${MAKEFLAGS_BASE2}"
        ;;
    "No" | "no" | "NO" | * )
        MAKEFLAGS_LINK_BASE="${MAKEFLAGS_BASE2}"
-- 
2.11.0