* doc/autoconf.texi (Invoking the Shell): New section.
(Backslash-Newline-Empty): Rename from Backslash-Newline-Newline.
Mention problem with Bash 2.03.
* lib/m4sugar/general.m4 (_AS_DETECT_BETTER_SHELL): Define the macro
`_AS_FORCE_REEXEC_WITH_CONFIG_SHELL' to `yes', so that the code in
`_AS_DETECT_BETTER_SHELL' will cause autoconf-generated configure
scripts to always re-execute themselves with $CONFIG_SHELL, if it's
set in the environment.
* doc/autoconf.texi (config.status Invocation): Update.
* doc/install.texi (Defining Variables): Likewise.
* NEWS: Likewise.
* tests/m4sh.at: Add tests for the new semantics in ...
(Configure re-execs self with CONFIG_SHELL): ... this new
test group.
This works better for symlinks to directories.
Problem reported by Eli Zaretskii via Werner Lemberg in
<http://lists.gnu.org/archive/html/bug-autoconf/2011-12/msg00006.html>.
* NEWS:
* doc/autoconf.texi (Particular Programs): Document this.
* lib/m4sugar/m4sh.m4 (_AS_LN_S_PREPARE): Implement this.
* doc/autoconf.texi (Limitations of Builtins) <export>: Give
concrete example of offender, and drop redundant text.
Reported by Stefano Lattarini.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/autoconf.texi (Limitations of Builtins) <export>: Document
export limitation.
Suggested by Bruno Haible.
Signed-off-by: Eric Blake <eblake@redhat.com>
* lib/autoconf/fortran.m4 (AC_PROG_FC): Define `$GFC' to "yes" if
the detected fortran compiler is a GNU compiler, define it to the
empty string otherwise.
This is mostly for consistency for what is done for the C, C++
and Fortran 77 compilers.
* doc/automake.texi: Update.
* doc/autoconf.texi (Signal handling): Rename ...
(Signal Handling): ... to this, for consistency with other node
names. Fix some typos and grammaros. Add more URL references
in comments.
Some Korn shells, when a child process dies due to signal number
n, can leave in $? an exit status of 256+n, instead of the more
common 128+n. See also Austin Group issue 0000051:
<http://www.austingroupbugs.net/view.php?id=51>
* doc/autoconf.texi (Signal handling): Document the described Korn
Shell behaviour, and some of its possible shortcomings.
Suggestion by Eric Blake.
See https://lists.gnu.org/archive/html/bug-diffutils/2011-08/msg00022.html
for precedence in diffutils. The autoconf manual, as of this commit,
was still barely below 400 pages.
* doc/autoconf.texi (copying): Drop front- and back-cover texts.
* NEWS: Document this.
Reported by Brian Gough.
Signed-off-by: Eric Blake <eblake@redhat.com>
The docs referred to @var{program}, which did not exist.
* doc/autoconf.texi (Runtime) <AC_RUN_IFELSE>: Fix wording.
Reported by Reuben Thomas.
Signed-off-by: Eric Blake <eblake@redhat.com>
* doc/autoconf.texi (Automatic Rule Rewriting): Solaris make
VPATH rewriting applies to any whitespace-separated word in a
rule, so it might apply also to shell variables, functions
and keywords (and automake has already tripped on this once);
document this, with an example. Since we are at it, do some
minor reformatting of existing text.
* 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>
* 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>
* 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>
