From 0145966e8e4f73843a72733e59263ce3f8c69f2e Mon Sep 17 00:00:00 2001
From: QBos07 <qubos@outlook.de>
Date: Sun, 1 Dec 2024 15:41:48 +0000
Subject: Cleanup old avr-libstdcxx code and make it usable on other targets
Should not cause major unwanted behavior changes
- C++ is now selected by default in many configs.
Signed-off-by: QBos07 <qubos@outlook.de>
[cp: depend on CC_LANG_CXX instead of select]
Signed-off-by: Chris Packham <judge.packham@gmail.com>
---
config/cc/gcc.in | 43 ++++++++++++++++++++++++++++++++++---------
1 file changed, 34 insertions(+), 9 deletions(-)
(limited to 'config')
diff --git a/config/cc/gcc.in b/config/cc/gcc.in
index 6e6bb828..b51c0bda 100644
--- a/config/cc/gcc.in
+++ b/config/cc/gcc.in
@@ -53,15 +53,6 @@ config CC_GCC_ENABLE_CXX_FLAGS
Note: just pass in the option _value_, that is only the part that goes
after the '=' sign.
-config CC_GCC_EXTRA_LIBSTDCXX
- bool "Re-enable libstdcxx"
- default n
- depends on LIBC_AVR_LIBC
- select CC_CORE_PASS_2_NEEDED
- help
- libstdcxx is normally disabled on avr systems due to size limitations.
- Set this option to re-enable libstdcxx support.
-
config CC_GCC_CORE_EXTRA_CONFIG_ARRAY
string "Core gcc extra config"
default ""
@@ -240,6 +231,40 @@ config CC_GCC_ENABLE_TARGET_OPTSPACE
This will compile crossgcc's libs with -Os.
+config CC_GCC_LIBSTDCXX
+ tristate "Build libstdcxx"
+ default n if ARCH_AVR || LIBC_NONE
+ default m
+ depends on CC_LANG_CXX
+ select CC_CORE_NEEDED if ARCH_AVR
+ help
+ libstdcxx is normally disabled on some systems, like avr, due to size
+ limitations or it being not supported.
+ Set this option to force libstdcxx support.
+
+ Option | libstdcxx build | Associated ./configure switch
+ ---------+--------------------+--------------------------------
+ Y | forcibly | --enable-libstdcxx
+ M | auto | (none, ./configure decides)
+ N | forcibly not | --disable-libstdcxx
+
+config CC_GCC_LIBSTDCXX_HOSTED_DISABLE
+ bool "Build freestanding libstdcxx"
+ default y if LIBC_AVR_LIBC
+ default n
+ depends on CC_GCC_LIBSTDCXX
+ help
+ libstdcxx can be compiled in two modes: hosted and freestanding.
+ Hosted mode is the default, and is used when the OS is available.
+ Freestanding mode is used when the OS is not available, like in
+ bare-metal systems.
+
+ Some architectures, like avr, do not support hosted mode, but default
+ to it, and will fail to build libstdcxx in hosted mode.
+
+ Answer 'y' here to force freestanding mode, otherwise answer let
+ ./configure decide.
+
config CC_GCC_LIBMUDFLAP
bool
prompt "Compile libmudflap"
--
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