Add compiler flags

makefile

@@ -4,7 +4,7 @@
 ARCH = native
 
 # Optimization level
-O = 3
+O = 2
 
 # Flags for the compiler
 FLAGS  = -std=c23
@@ -18,7 +18,13 @@ FLAGS += -pedantic
 FLAGS += -Wall
 FLAGS += -Wextra
 FLAGS += -Werror
-# This flag is because of the compiler otherwise giving too much warning
+FLAGS += -Wconversion
+FLAGS += -Wmissing-prototypes
+FLAGS += -Wlogical-op
+FLAGS += -Wdisabled-optimization
+FLAGS += -fanalyzer
+# These flags are because of the compiler otherwise giving too much warning
+FLAGS += -Wno-sign-conversion
 #FLAGS += -Wformat-truncation=0
 
 # Compile flag for defining GITHASH to put at the end of the version string
@@ -49,7 +55,7 @@ MSG_CLEANING_OBJ = Cleaning $(OBJDIR):
 MSG_CLEANING_OUT = Cleaning $(OUTDIR):
 
 # Compile for all UI targets
-all: $(addprefix $(OUTDIR)/connect4_,ncurses.elf vt100.elf)
+all: $(addprefix $(OUTDIR)/connect4_,ncurses.elf vt100.elf stub.elf)
 
 # Compile and run the default UI target
 run: $(OUTDIR)/connect4_$(UI_TARGET).elf