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From a3fb1dcf2b7146c1ae6014c655957a775e1ea6b0 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sun, 12 Feb 2023 14:23:32 -0800
Subject: [PATCH] Support picolibc targets
Match *-picolibc-* and select picolibc as the default C library, plus continuing to use
the newlib-based logic for other configuration items.
Signed-off-by: Keith Packard <keithp@keithp.com>
---
gcc/config.gcc | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index bcf23f9d0a42..f770d21e5d4c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1168,6 +1168,17 @@ case ${target} in
;;
esac
;;
+*-picolibc-*)
+ # __cxa_atexit is provided.
+ default_use_cxa_atexit=yes
+ use_gcc_stdint=wrap
+ default_libc=LIBC_PICOLIBC
+ case "${with_newlib}-${with_headers}" in
+ no-no) use_gcc_stdint=provide ;;
+ *) ;;
+ esac
+ ;;
+
*-*-elf|arc*-*-elf*)
# Assume that newlib is being used and so __cxa_atexit is provided.
default_use_cxa_atexit=yes
--
2.49.0
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