From 09b208c53667210638bb56c0241d0f28a10f51b5 Mon Sep 17 00:00:00 2001
From: Jouni Paulus <jouni.paulus@nokia.com>
Date: Wed, 15 Nov 2023 13:39:59 +0100
Subject: [PATCH 1/2] added C flag -fft-contract=off to disable floating point
 operation contraction causing wrong behaviour on some platforms

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 478e1a2fcb..435773d7bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -57,6 +57,7 @@ if(UNIX)
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m64")
   endif()
   # C compiler flags
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffp-contract=off")  # disable floating point operation contraction
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pedantic -Wcast-qual -Wall -W -Wextra -Wno-long-long")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror-implicit-function-declaration -Wno-unused-parameter")
-- 
GitLab


From 8ae39095789a8919c995431aa20315d116fbb72f Mon Sep 17 00:00:00 2001
From: Jouni Paulus <jouni.paulus@nokia.com>
Date: Wed, 15 Nov 2023 15:16:47 +0100
Subject: [PATCH 2/2] add flag -fft-contract=off also to Makefile

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 8955e04e66..811d38b684 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,7 @@ endif
 CFLAGS   += -std=c99 -pedantic -Wcast-qual -Wall -W -Wextra -Wno-long-long     \
             -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes  \
             -Werror-implicit-function-declaration \
-            -Wno-implicit-fallthrough
+            -Wno-implicit-fallthrough -ffp-contract=off
 
 # libs to link
 LDLIBS   += -lm
-- 
GitLab