From: Keith Packard <keithp@keithp.com>
Date: Sun, 25 Sep 2022 20:55:04 +0000 (-0700)
Subject: altos: Use --gc-sections
X-Git-Tag: 1.9.13~1^2~26^2~54^2~7
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=3a7ae9e964c9554a667a09d6b437fef136bc0fa0

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>
---

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=\