The plan to maintain PRU hardware-specific specs in newlib tree has been
abandoned in favour of a new distinct GIT project. Update the
documentation accordingly.
gcc/ChangeLog:
* doc/invoke.texi (-mmcu): Add information about MCU specs.
Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
---
gcc/doc/invoke.texi | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 69020245b25..d75b28484bb 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -30106,8 +30106,14 @@ This is already the norm for most firmware projects.
@opindex mmcu
@item -mmcu=@var{mcu}
-Specify the PRU MCU variant to use. Check Newlib for the exact list of
-supported MCUs.
+Specify the PRU hardware variant to use. A correspondingly named
+spec file would be loaded, passing the memory region sizes to
+the linker and defining hardware-specific C macros.
+
+Newlib provides only the @code{sim} spec, intended for running
+regression tests using a simulator. Specs for real hardware can be
+obtained by installing the
+@w{@uref{https://github.com/dinuxbg/gnuprumcu/,GnuPruMcu}} package.
@opindex mno-relax
@item -mno-relax
--
2.43.0
