https://gcc.gnu.org/g:cfc9f42122f41668b986126ba7e65e3dd8bf1e9e
commit r15-7732-gcfc9f42122f41668b986126ba7e65e3dd8bf1e9e
Author: Jerry DeLisle <jvdeli...@gcc.gnu.org>
Date: Wed Feb 26 17:26:26 2025 -0800
GCC: Documentation of -x option
This change updates information about the -x option to clarify
that it does not ensure standards compliance. Sparked by
discussions in the following PR.
PR fortran/108369
gcc/ChangeLog:
* doc/invoke.texi: Add a note to clarify. Adjust some wording.
Diff:
---
gcc/doc/invoke.texi | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index bad49a017cc1..6f8bf3923863 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1700,9 +1700,13 @@ f77 f77-cpp-input f95 f95-cpp-input
go
@end smallexample
+Note that @option{-x} does not imply a particular language standard.
+For example @option{-x f77} may also require @option{-std=legacy} for some
older
+source codes.
+
@item -x none
Turn off any specification of a language, so that subsequent files are
-handled according to their file name suffixes (as they are if @option{-x}
+handled according to their file name suffixes (as if @option{-x}
has not been used at all).
@end table
