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-rw-r--r--config/libc/picolibc.in29
1 files changed, 24 insertions, 5 deletions
diff --git a/config/libc/picolibc.in b/config/libc/picolibc.in
index 6c4c6cac..c3014b11 100644
--- a/config/libc/picolibc.in
+++ b/config/libc/picolibc.in
@@ -40,31 +40,47 @@ config LIBC_PICOLIBC_IO_C99FMT
config LIBC_PICOLIBC_REGISTER_FINI
bool
- prompt "Enable finalization function registration using atexit"
+ prompt "Enable finalization function registration using atexit [unused]"
help
Enable finalization function registration using atexit.
+ This would be used when building with the legacy newlib exit
+ handling code which cannot be enabled in crosstool-ng, so
+ this option doesn't do anything.
+
config LIBC_PICOLIBC_ATEXIT_DYNAMIC_ALLOC
bool
- prompt "Enable dynamic allocation of atexit entries"
+ prompt "Enable dynamic allocation of atexit entries [unused]"
help
Enable dynamic allocation of atexit entries.
+ This would be used when building with the legacy newlib exit
+ handling code which cannot be enabled in crosstool-ng, so
+ this option doesn't do anything.
+
config LIBC_PICOLIBC_GLOBAL_ATEXIT
bool
- prompt "Enable atexit data structure as global variable"
+ prompt "Enable atexit data structure as global variable [unused]"
help
Enable atexit data structure as global variable, instead
of being thread-local.
+ This would be used when building with the legacy newlib exit
+ handling code which cannot be enabled in crosstool-ng, so
+ this option doesn't do anything.
+
config LIBC_PICOLIBC_LITE_EXIT
bool
- prompt "Enable lite exit"
+ prompt "Enable lite exit [unused]"
default y
help
Enable lite exit, a size-reduced implementation of exit that doesn't
invoke clean-up functions such as _fini or global destructors.
+ This would be used when building with the legacy newlib exit
+ handling code which cannot be enabled in crosstool-ng, so
+ this option doesn't do anything.
+
config LIBC_PICOLIBC_MULTITHREAD
bool
prompt "Enable support for multiple threads"
@@ -74,12 +90,15 @@ config LIBC_PICOLIBC_MULTITHREAD
config LIBC_PICOLIBC_RETARGETABLE_LOCKING
bool
- prompt "Enable retargetable locking"
+ prompt "Enable retargetable locking [unused]"
default y
help
Enable retargetable locking to allow the operating system to override
the dummy lock functions defined within picolibc.
+ This value was always required to match
+ LIBC_PICOLIBC_MULTITHREAD, so it is no longer used.
+
config LIBC_PICOLIBC_EXTRA_SECTIONS
bool
prompt "Place each function & data element in their own section"