* lib/autoconf/c.m4 (AC_C_CONST): Don't reject gcc when it is used
with -Werror -Wall during configuring. It's unwise to use GCC
that way, but apparently enough people do it nowadays that it's an
issue. These days nobody uses the old compilers that the old
tests reject, so we can't test this fix against them, but it's
more important to work with modern GCC (even when misused) than to
work with no-longer-used compilers. Problem reported by Shevek in
<http://lists.gnu.org/archive/html/bug-autoconf/2008-11/msg00007.html>
and raised again by Dan Kegel in
<http://lists.gnu.org/archive/html/bug-autoconf/2011-08/msg00020.html>.
* 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>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-07-11 Mike Frysinger <vapier@gentoo.org>
* lib/m4sugar/m4sugar.m4 (_m4_require_check): Add URL to warning.
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>
* doc/autoconf.texi (Limitations of Usual Tools) <join>: Mention
bug in -a parsing.
Reported by J.T. Conklin.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/fortran.m4 (AC_FC_PP_DEFINE): New macro.
* lib/autom4te.in (Automake-preselections): Preselect it.
* doc/autoconf.texi (Fortran Compiler): Document it.
* tests/local.at (_AT_CHECK_ENV): Do not complain about
FCFLAGS_F nor FC_DEFINE.
* NEWS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/fortran.m4 (AC_FC_PP_SRCEXT): New macro.
* lib/autom4te.in (Automake-preselections): Preselect it.
* doc/autoconf.texi (Fortran Compiler): Document it, rewriting
the documentation for AC_FC_SRCEXT along the way.
* tests/fortran.at (AC_FC_PP_SRCEXT usage): New test.
* tests/mktests.sh: Exclude the macro from default testing.
* NEWS: Update.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* 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>
* doc/autoconf.texi (Trailing whitespace in Make Macros):
Document issue with trailing whitespace in macro settings.
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>
* m4/m4.m4 (AC_PROG_GNU_M4): When searching PATH, do not accept
an m4 that has either the gnulib strstr bug, or the glibc/gnulib
strstr bug.
Signed-off-by: Eric Blake <eblake@redhat.com>
* tests/fortran.at (GNU Fortran 77): Try to detect f2c wrapper
fort77 as GNU as well: it defines __GNUC__ too. Fixes testsuite
failure when f77 is fort77.
Report from Giulio Paci.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/status.m4 (_AC_OUTPUT_CONFIG_STATUS): Allow
$SHELL to contain more than one word, when rerunning configure,
for debugging purposes like CONFIG_SHELL='/bin/sh -x'.
Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
* lib/autoconf/c.m4 (_AC_LANG_OPENMP(Fortran 77)): Use '!$'
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 (Runtime) <AC_RUN_IFELSE>: Make synopsis show
that the default is configure failure. Rework the text about
proper use of the fourth argument.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/types.m4 (AC_TYPE_LONG_LONG_INT): Provide no-op
cross-compiling fallback; fixing regression from 2011-02-16.
Signed-off-by: Eric Blake <eblake@redhat.com>
This change is imported from gnulib.
* lib/autoconf/types.m4 (AC_TYPE_LONG_LONG_INT): Don't bother compiling
or running anything if c99, or if unsigned long long int does not
work. In either case, we know the answer without further tests.
Do not compile _AC_TYPE_LONG_LONG_SNIPPET twice. Instead, compile
it at most once, and use its results for both long long int and
unsigned long long int. This is more likely to be efficient in
the common case where the program wants to check for both long
long int and unsigned long long int.
(AC_TYPE_UNSIGNED_LONG_LONG_INT): Don't bother compiling if c99,
since the answer is already known.
