From 3a7ae9e964c9554a667a09d6b437fef136bc0fa0 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sun, 25 Sep 2022 13:55:04 -0700
Subject: [PATCH] altos: Use --gc-sections

This allows the linker to discard unused functions.

Don't use -ffunctions-sections and -fdata-sections as that eliminates
several optimization opportunities and increases code size.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/Makefile.defs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Makefile.defs b/src/Makefile.defs
index d9b71997..c2d5247c 100644
--- a/src/Makefile.defs
+++ b/src/Makefile.defs
@@ -23,6 +23,7 @@ OPT=-Os -Wl,-Map=$(PROGNAME)-$(VERSION).map
 
 PICOLIBC_CFLAGS= \
 	-specs=picolibc.specs \
+	-Wl,--gc-sections \
 	$(PICOLIBC_PRINTF_CFLAGS)
 
 AO_CFLAGS=\
-- 
2.30.2