Done via 'make update-copyright', since all files are effectively
modified and distributed this year via public version control.
* all files: Update copyright year.
Jonathan Lebon reported an issue to me off-list about a regression
in libvirt's configure script, which I traced to a patch that
rearranged code that was checking $with_library compared to the
AC_ARG_WITH that actually set $with_library [1]. As the whole point
of the libvirt patch was to refactor code to make maintenance
easier by hiding the AC_ARG_WITH in a helper macro for a net
reduction in lines, it makes sense to actually document how to
check what value a variable has prior to the AC_ARG_WITH usage.
Alas, although the functionality for this has been present in
autoconf for ages, the documentation has been lacking.
[1] libvirt.org/git/?p=libvirt.git;a=commitdiff;h=654c709
* doc/autoconf.texi (Diversion support) <m4_divert_text>: Add
anchor.
(External Software) <AC_ARG_WITH>: Demonstrate how to use DEFAULTS
diversion, for earlier defaults.
(Package Options) <AC_ARG_ENABLE>: Likewise.
* THANKS: Add Jonathan Lebon.
Signed-off-by: Eric Blake <eblake@redhat.com>
Done via 'make update-copyright', since all files are effectively
modified and distributed this year via public version control.
* all files: Update copyright year.
Consider the following:
% cat >configure.ac <<'EOF'
AC_INIT([test], [0])
m4_define([FOO], [baz])
AC_SUBST([FOO], [bar])
AC_CONFIG_FILES([test])
AC_OUTPUT
EOF
% cat >test.in <<'EOF'
@FOO@
EOF
This produces no error messages at autoconf time and none at configure
time. Nevertheless, the substituted value of FOO is the empty string,
instead of bar, as expected. Sure enough, in the output variables
section of config.log, we see FOO='' instead of FOO='bar'. Looking
at the generated configure script, we see that AC_SUBST has produced
baz=bar in the output, instead of the expected FOO=bar. But this is
the only place: everywhere else is still using FOO.
* lib/autoconf/general.m4 (AC_SUBST): Add another layer of
quoting.
* THANKS: Update.
Signed-off-by: Eric Blake <eblake@redhat.com>
IFS may be modified temporarily when the configure script receives a
signal. Make sure the EXIT trap uses the standard value.
* lib/autoconf/general.m4: Sanitize IFS in trap.
* THANKS: Update.
Copyright-paperwork-exempt: Yes
The texinfo manual recommends avoiding the use of a trailing @c in
any macro designed to be used inline (as is the case with our ovar
and dvar macros). Furthermore, passing '@\n' in the middle of a
macro call is much different than passing '@\n' between arguments
of a @defmac for line continuation.
* doc/autoconf.texi (ovar, dvar): Don't end macro with @c, since
these macros are designed to be embedded in one-line usage.
(Fortran Compiler): Don't split @dvar.
* THANKS: Update.
Reported by Stefano Lattarini.
Signed-off-by: Eric Blake <eblake@redhat.com>
Copyright-paperwork-exempt: Yes
* doc/autoconf.texi (Why Not Imake): Fix grammar.
(autoreconf Invocation): Fix short option for --version.
* THANKS: Update.
Reported by Christophe Jarry and Russ Allbery.
Signed-off-by: Eric Blake <eblake@redhat.com>
The existing example triggers an autoconf warning, due to the
change in AC_COMPILE_IFELSE probing for an AC_LANG_SOURCE use.
* doc/autoconf.texi (Autoconf Language): Add AC_LANG_SOURCE use.
* THANKS: Update.
Reported by Křištof Želechovski.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/fortran.m4 (AC_FC_MODULE_FLAG): New macro,
adjusted and rewritten from the AX_F90_MODULE_FLAG macro from
the Autoconf Macro Archive by Luc Maisonobe, Julian C. Cummings,
and Alexander Pletzer.
* doc/autoconf.texi (Fortran Compiler): Document it.
* tests/fortran.at (AC_FC_MODULE_FLAG): New test.
* tests/local.at (AT_CHECK_ENV): Do not complain about FC_MODINC
setting.
* NEWS, THANKS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/fortran.m4 (AC_FC_MODULE_EXTENSION): New macro,
rewritten from the AX_F90_MODULE_EXTENSION macro from the
Autoconf Macro Archive by Luc Maisonobe and Alexander Pletzer.
* doc/autoconf.texi (Fortran Compiler): Document it.
* tests/local.at (_AT_CHECK_ENV): Do not complain about
FC_MODEXT setting.
* NEWS, THANKS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/fortran.m4 (_AC_FC_IMPLICIT_NONE): Use -e I
not -d i, for Cray ftn.
* THANKS: Update.
Thanks to Tobias Burnus for feedback and testing.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/c.m4 (_AC_LANG_OPENMP(Fortran 77)): Use '!$'
OpenMP-conditional compilation construct, to force compile
failure with missing OpenMP flag.
(AC_OPENMP): Add flags for Cray CCE and NEC SX compilers.
* THANKS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* doc/autoconf.texi (Limitations of Usual Tools) <tr>: Mention
that 'redundant' brackets can work around Solaris bug.
(File Descriptors): Mention that {} works as well as () for
silencing file-not-found warnings.
* THANKS: Update.
Suggested by Pádraig Brady.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/functions.m4 (AC_REPLACE_FUNCS): Handle
non-literals, which was lost in 2010-02-26 optimization.
* tests/semantics.at (AC_REPLACE_FUNCS): Enhance test.
* NEWS: Document the fix.
* THANKS: Update.
Reported by Wiseman Jun.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/autoconf.texi (Limitations of Usual Tools) <sed>: Mention
the issue.
* tests/torture.at (Substitute and define special characters):
Detect if sed cannot process 8-bit bytes in the C locale.
* THANKS: Update.
Reported by Rochan.
Signed-off-by: Eric Blake <eblake@redhat.com>
AS_ERROR Regression introduced in commit cffdc3947, but the
underlying problem stems from the introduction of m4_defun_init
in commit d0c5f482.
* lib/m4sugar/m4sugar.m4 (m4_defun_init): Avoid macro
concatenation on subsequent expansions
* tests/m4sh.at (AS_WARN and AS_ERROR): New test.
* tests/m4sugar.at (m4@&t@_require: one-shot initialization):
Enhance test.
* NEWS: Document the fix.
* THANKS: Update.
Reported by Adrian Bunk and and Nishio Futoshi.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/functions.m4 (_AC_LIBOBJ_GETLOADAVG): Only define
SVR4 when -lkvm is required.
* THANKS: Update.
Reported by Yaakov Selkowitz.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/headers.m4 (AC_HEADER_STDBOOL): Drop gcc (and by
extension clang) check in favor of a gnulib test. Force failure,
rather than merely testing for a compiler extension.
* THANKS: Update.
Reported by Anders Kaseorg.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/autoconf.texi (Polymorphic Variables) <AS_VAR_IF>: Make it
clear that user must supply quotes as needed.
* THANKS: Update.
Suggested by Randall Cotton.
Signed-off-by: Eric Blake <eblake@redhat.com>
* tests/local.at (AT_CHECK_M4): Normalize hyphens and digits
after the `m4' program name.
* THANKS: Update.
Report by Luke Dalessandro.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* tests/compile.at (AC_LANG_SOURCE example)
(AC_LANG_PROGRAM example): Fix broken sed script for
extracting the interesting part of the conftest.c file.
Fixes test failure on Haiku.
* THANKS: Update.
Report by Scott McCreary.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/status.m4 (_AC_OUTPUT_FILES_PREPARE): Count ^
rather than $ to avoid QNX4 grep bug.
* THANKS: Update.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/m4sugar/m4sugar.m4 (m4_cr_all): Swap * and $, so that we
don't end up with $* in EBCDIC.
* NEWS: Document the fix.
* THANKS: Update.
Reported by Steve Goetze.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/autoconf.texi (Generating Sources) <AC_LANG_CONFTEST>:
Enhance documentation, to show that semantic change in 2.63b was
intentional.
* THANKS: Update.
Reported by Brian J. Murrell, analyzed by Ralf Wildenhues.
Signed-off-by: Eric Blake <eblake@redhat.com>
* tests/tools.at (autom4te cache creation): Normalize exit
status of failed redirection to 1, may be 2 with FreeBSD sh.
* THANKS: Update.
Report by Václav Haisman.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
