Commit 4a5ee89c authored by Eric Blake's avatar Eric Blake

manywarnings: enable nicer gcc warning messages

With gcc 4.3.4, -Wdisabled-optimization is noisy unless you also
use -funit-at-a-time.

With gcc 4.4.7, there is no indication which warning option
triggered a particular message unless you also use
-fdiagnostics-show-option.

Both of these options are default in newer gcc (such as 4.8.1);
but including them in the list of possible warnings makes the
experience nicer on older platforms.

* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Older gcc requires
some -f options for optimal warnings.
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
parent aa20227c
2013-09-24 Eric Blake <eblake@redhat.com>
manywarnings: enable nicer gcc warning messages
* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Older gcc requires
some -f options for optimal warnings.
2013-09-21 Jim Meyering <meyering@fb.com>
timespec: use the new TIMESPEC_RESOLUTION in a few more places
# manywarnings.m4 serial 5
# manywarnings.m4 serial 6
dnl Copyright (C) 2008-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
......@@ -204,6 +204,8 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC],
-Wvla \
-Wvolatile-register-var \
-Wwrite-strings \
-fdiagnostics-show-option \
-funit-at-a-time \
\
; do
gl_manywarn_set="$gl_manywarn_set $gl_manywarn_item"
......
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