build(makefile): optimize for performance and security hardeningv1.0.1

- Enable -O3, -flto, -fomit-frame-pointer, and -march=native for performance
- Add strict compiler warnings (-Werror, -Wconversion, -Wsign-conversion, -Wshadow, -Wformat=2)
- Add security hardening flags (-fstack-protector-strong, -D_FORTIFY_SOURCE=2)
- Pass -flto, -O3, and strip symbols (-Wl,-s) during linking

1 files changed, 15 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 939f257..c2a75fd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,20 @@
 # Compiler and flags
+# Compiler & Language Standard
 CC      := gcc
-CFLAGS  := -Wall -Wextra -Wpedantic -O2 -std=c11 -D_POSIX_C_SOURCE=200809L
+CFLAGS  := -std=c11 -D_POSIX_C_SOURCE=200809L
+
+# --- PERFORMANCE FLAGS ---
+CFLAGS  += -O3 -flto -fomit-frame-pointer -march=native
+
+# --- SAFETY & STRICT WARNING FLAGS ---
+CFLAGS  += -Wall -Wextra -Wpedantic -Werror \
+           -Wconversion -Wsign-conversion -Wshadow -Wformat=2
+
+# --- HARDENING & RUNTIME PROTECTION FLAGS ---
+CFLAGS  += -fstack-protector-strong -D_FORTIFY_SOURCE=2
+
+# --- LINKER FLAGS (LTO & Strip) ---
+LDFLAGS := -flto -O3 -Wl,-s
 TARGET  := ud
 SRC     := main.c
 OBJ     := $(SRC:.c=.o)