Autoconf older than 2.63b (such as what ships on CentOS 6) had
a bug that any AC_DEFUN'd macro name that includes shell meta-
characters causes failure due to missing shell quoting during
aclocal's use of autom4te. We can work around the problem by
using m4_defun instead (same semantics in autom4te, but no
longer traced by aclocal, so no longer tickles the shell
quoting bug).
* m4/warnings.m4 (gl_UNKNOWN_WARNINGS_ARE_ERRORS(C))
(gl_UNKNOWN_WARNINGS_ARE_ERRORS(C++)): Use m4_defun rather than
AC_DEFUN.
* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC(C))
(gl_MANYWARN_ALL_GCC(C++)): Likewise.
Reported-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
* warnings.m4 (gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL): Renamed from
gl_UNKNOWN_WARNINGS_ARE_ERRORS.
(gl_UNKNOWN_WARNINGS_ARE_ERRORS(C)): New macro.
(gl_UNKNOWN_WARNINGS_ARE_ERRORS(C++)): New macro.
(gl_UNKNOWN_WARNINGS_ARE_ERRORS): Dispatch to
gl_UNKNOWN_WARNINGS_ARE_ERRORS(_AC_LANG).
(gl_WARN_ADD): Require the gl_UNKNOWN_WARNINGS_ARE_ERRORS specialization
of the current language. If C++ is the current language, modify
WARN_CXXFLAGS instead of WARN_CFLAGS.
* manywarnings.m4 (gl_MANYWARN_ALL_GCC(C)): New macro, extracted from
gl_MANYWARN_ALL_GCC.
(gl_MANYWARN_ALL_GCC): Dispatch to gl_MANYWARN_ALL_GCC(_AC_LANG).
* build-aux/gendocs.sh (version):
* doc/gendocs_template:
* doc/gendocs_template_min:
* doc/gnulib.texi:
* lib/version-etc.c (COPYRIGHT_YEAR):
Update copyright dates by hand in templates and the like.
* all files: Run 'make update-copyright'.
* build-aux/gendocs.sh (version):
* doc/gendocs_template:
* doc/gendocs_template_min:
* doc/gnulib.texi:
* lib/version-etc.c (COPYRIGHT_YEAR):
Update copyright dates by hand in templates and the like.
* all files: Run 'make update-copyright'.
Paul Eggert suggested that expr is more efficient than echo|sed.
* m4/warnings.m4 (gl_COMPILER_OPTION_IF): Use fewer processes.
Signed-off-by: Eric Blake <eblake@redhat.com>
As reported by Christophe Fergeau and others, use of the
warnings modules is awkward when probing for negative
warning flags. For example, clang recognizes
-Wno-unused-command-line-argument, but gcc does not;
gcc silently ignores unknown warnings in isolation, but when
something else also causes a compilation problem, gcc then
compounds the overall message by also complaining about the
unrecongized command line option at that time. The gcc manual
documents that this behavior is intentional so that someone
can add a -Wno-foo silencer to CFLAGS for a warning that older
gcc does not understand, and where the warning is undesired
under newer gcc; it also documents that probing for the -Wfoo
positive form of the error is a reliable way to tell if the
negative form will actually suppress anything. Clang will
warn for both positive and negative forms of an unknown
option.
Since common usage includes:
for w in $list; do
gl_WARN_ADD([$w])
done
the solution must be polymorphic to work on both m4 literals
and shell variables (similar to AS_VAR_SET polymorphism).
* m4/warnings.m4 (gl_COMPILER_OPTION_IF): If name begins with
-Wno-, test if the compiler recognizes the positive form instead.
Signed-off-by: Eric Blake <eblake@redhat.com>
* m4/warnings.m4 (gl_COMPILER_OPTION_IF): New, extracted from
(gl_WARN_ADD): here.
Use gl_AS_VAR_APPEND.
Support an argument to specify the program to compile.
(gl_WARN_ADD): Accept an argument to specify the program to compile.
AC_SUBST the WARN_CFLAGS when they are used.
* modules/warnings (configure.ac): Don't AC_SUBST WARN_CFLAGS,
leave this to gl_WARN_ADD.
Older autoconf did not know how to peer through quoting of the
m4 macro created by AS_VAR_PUSHDEF; while newer autoconf has
been patched to allow typical autoconf quoting rules to still
apply, compatibility with autoconf 2.59 requires the unquoted
use of the macro name for all uses prior to AS_VAR_POPDEF.
absolute-header.m4 and warn-on-use.m4 already got this right.
* m4/include_next.m4 (gl_NEXT_HEADERS_INTERNAL): Use
AS_VAR_PUSHDEF in a way that works with older autoconf.
* m4/warnings.m4 (gl_WARN_ADD): Likewise.
Reported by Daniel P. Berrange.
Signed-off-by: Eric Blake <eblake@redhat.com>
The files named by the following are exempted:
grep -v '^#' config/srclist.txt|grep -v '^$' \
| while read src dst; do
test -f "$dst" && { echo "$dst"; continue; }
test -d "$dst" || continue
echo "$dst"/$(basename "$src")
done > exempt
git ls-files tests/unictype >> exempt
In the remaining files, convert to all-interval notation if
- there is already at least one year interval like 2000-2003
- the file is maintained by me
- the file is in lib/uni*/, where that style already prevails
Otherwise, use update-copyright's default.
Eric Blake