Make file wrongly attempts to set optimisation using lowercase o

[looopTools]

Problem/Opportunity

The Make line 117 wrongly use -o0 instead of -O0 to set optimisation level 0 when building to TARGET=linux.

This result in all file compiled with CC being named 0

Steps to reproduce

No response

Expected Behavior

Files compile with optimisation level 0

Actual Behavior

Files are named 0

Notes (Optional)

No response

[looopTools]

For some reason I cannot create a branch on this repository.
I have attached a generate a patch that solves the issue:

From da8000c2c943ac218e87c1a64c2496b6370a9e58 Mon Sep 17 00:00:00 2001
From: Lars Kakavandi-Nielsen <lars@embras.dk>
Date: Wed, 22 Jul 2026 16:09:02 +0200
Subject: [PATCH] 130: Fixing using lower case o when setting optimisation
 level

-o0 was replaced with -O0 to correctly set optimisation level.
This issue only happens with build target LINUX
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index c35a352..b9c90c0 100755
--- a/Makefile
+++ b/Makefile
@@ -114,7 +114,7 @@ endif
 
 # Defaults for target linux
 ifeq ($(TARGET),linux)
-CC ?= gcc -ggdb -o0 -Wall
+CC ?= gcc -ggdb -O0 -Wall
 endif
 
 SRCS := $(shell find $(SRC_DIRS) -name *.cpp -or -name *.c -or -name *.s)
-- 
2.53.0