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Because (i) the code # is simpler, and (ii) we are still able to diagnose simultaneous # presence of configure.ac and configure.in. @ARGV = map { /configure\.(ac|in)$/ ? dirname ($_) : $_ } @ARGV; push @ARGV, '.' unless @ARGV; if ($verbose && $debug) { for my $prog ($autoconf, $autoheader, $automake, $aclocal, $autopoint, $libtoolize) { xsystem ("$prog --version | sed 1q >&2"); print STDERR "\n"; } } my $aclocal_help = `$aclocal --help 2>/dev/null`; my $automake_help = `$automake --help 2>/dev/null`; $aclocal_supports_force = $aclocal_help =~ /--force/; $aclocal_supports_warnings = $aclocal_help =~ /--warnings/; $automake_supports_force_missing = $automake_help =~ /--force-missing/; $automake_supports_warnings = $automake_help =~ /--warnings/; # Dispatch autoreconf's option to the tools. # --include; $aclocal .= join (' -I ', '', map { shell_quote ($_) } @include); $autoconf .= join (' --include=', '', map { shell_quote ($_) } @include); $autoconf .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include); $autoheader .= join (' --include=', '', map { shell_quote ($_) } @include); $autoheader .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include); # --install and --symlink; if ($install) { $automake .= ' --add-missing'; $automake .= ' --copy' unless $symlink; $libtoolize .= ' --copy' unless $symlink; } # --force; if ($force) { $aclocal .= ' --force' if $aclocal_supports_force; $autoconf .= ' --force'; $autoheader .= ' --force'; $automake .= ' --force-missing' if $automake_supports_force_missing; $autopoint .= ' --force'; $libtoolize .= ' --force'; } else { # The implementation of --no-force is bogus in all implementations # of Automake up to 1.8, so we avoid it in these cases. (Automake # 1.8 is the first version where aclocal supports force, hence # the condition.) $automake .= ' --no-force' if $aclocal_supports_force; } # --verbose --verbose or --debug; if ($verbose > 1 || $debug) { $autoconf .= ' --verbose'; $autoheader .= ' --verbose'; $automake .= ' --verbose'; $aclocal .= ' --verbose'; } if ($debug) { $autoconf .= ' --debug'; $autoheader .= ' --debug'; $libtoolize .= ' --debug'; } # --warnings; if (@warning) { my $warn = ' --warnings=' . join (',', @warning); $autoconf .= $warn; $autoheader .= $warn; $automake .= $warn if $automake_supports_warnings; $aclocal .= $warn if $aclocal_supports_warnings; } } # &run_aclocal ($ACLOCAL, $FLAGS) # ------------------------------- # Update aclocal.m4 as lazily as possible, as aclocal pre-1.8 always # overwrites aclocal.m4, hence triggers autoconf, autoheader, automake # etc. uselessly. aclocal 1.8+ does not need this. sub run_aclocal ($$) { my ($aclocal, $flags) = @_; # aclocal 1.8+ does all this for free. It can be recognized by its # --force support. if ($aclocal_supports_force) { xsystem ("$aclocal $flags"); } else { xsystem ("$aclocal $flags --output=aclocal.m4t"); # aclocal may produce no output. if (-f 'aclocal.m4t') { update_file ('aclocal.m4t', 'aclocal.m4'); # Make sure that the local m4 files are older than # aclocal.m4. # # Why is not always the case? Because we already run # aclocal at first (before tracing), which, for instance, # can find Gettext's macros in .../share/aclocal, so we may # have had the right aclocal.m4 already. Then autopoint is # run, and installs locally these M4 files. Then # autoreconf, via update_file, sees it is the _same_ # aclocal.m4, and doesn't change its timestamp. But later, # Automake's Makefile expresses that aclocal.m4 depends on # these local files, which are newer, so it triggers aclocal # again. # # To make sure aclocal.m4 is no older, we change the # modification times of the local M4 files to be not newer # than it. # # First, where are the local files? my $aclocal_local_dir = '.'; if ($flags =~ /-I\s+(\S+)/) { $aclocal_local_dir = $1; } # All the local files newer than aclocal.m4 are to be # made not newer than it. my $aclocal_m4_mtime = mtime ('aclocal.m4'); for my $file (glob ("$aclocal_local_dir/*.m4"), 'acinclude.m4') { if ($aclocal_m4_mtime < mtime ($file)) { debug "aging $file to be not newer than aclocal.m4"; utime $aclocal_m4_mtime, $aclocal_m4_mtime, $file; } } } } } # &autoreconf_current_directory # ----------------------------- sub autoreconf_current_directory () { my $configure_ac = find_configure_ac; # ---------------------- # # Is it using Autoconf? # # ---------------------- # my $uses_autoconf; my $uses_gettext; if (-f $configure_ac) { my $configure_ac_file = new Autom4te::XFile "< $configure_ac"; while ($_ = $configure_ac_file->getline) { s/#.*//; s/dnl.*//; $uses_autoconf = 1 if /AC_INIT/; # See below for why we look for gettext here. $uses_gettext = 1 if /^AM_GNU_GETTEXT_VERSION/; } } if (!$uses_autoconf) { verb "$configure_ac: not using Autoconf"; return; } # ------------------- # # Running autopoint. # # ------------------- # # Gettext is a bit of a problem: its macros are not necessarily # visible to aclocal, so if we start with a completely striped down # package (think of a fresh CVS checkout), running `aclocal' first # will fail: the Gettext macros are missing. # # Therefore, we can't use the traces to decide if we use Gettext or # not. I guess that once Gettext move to 2.5x we will be able to, # but in the meanwhile forget it. # # We can only grep for AM_GNU_GETTEXT_VERSION in configure.ac. You # might think this approach is naive, and indeed it is, as it # prevents one to embed AM_GNU_GETTEXT_VERSION in another *.m4, but # anyway we don't limit the generality, since... that's what # autopoint does. Actually, it is even more restrictive, as it # greps for `^AM_GNU_GETTEXT_VERSION('. We did this above, while # scanning configure.ac. if (!$uses_gettext) { verb "$configure_ac: not using Gettext"; } elsif (!$install) { verb "$configure_ac: not running autopoint: --install not given"; } else { xsystem_hint ("autopoint is needed because this package uses Gettext", "$autopoint"); } # ----------------- # # Running aclocal. # # ----------------- # # Run it first: it might discover new macros to add, e.g., # AC_PROG_LIBTOOL, which we will trace later to see if Libtool is # used. # # Always run it. Tracking its sources for up-to-dateness is too # complex and too error prone. The best we can do is avoiding # nuking the time stamp. my $uses_aclocal = 1; # Nevertheless, if aclocal.m4 exists and is not made by aclocal, # don't run aclocal. if (-f 'aclocal.m4') { my $aclocal_m4 = new Autom4te::XFile 'aclocal.m4'; $_ = $aclocal_m4->getline; $uses_aclocal = 0 unless defined ($_) && /generated.*by aclocal/; } # If there are flags for aclocal in Makefile.am, use them. my $aclocal_flags = ''; if ($uses_aclocal && -f 'Makefile.am') { my $makefile = new Autom4te::XFile 'Makefile.am'; while ($_ = $makefile->getline) { if (/^ACLOCAL_[A-Z_]*FLAGS\s*=\s*(.*)/) { $aclocal_flags = $1; last; } } } if (!$uses_aclocal) { verb "$configure_ac: not using aclocal"; } else { # Some file systems have sub-second time stamps, and if so we may # run into trouble later, after we rerun autoconf and set the # time stamps of input files to be no greater than aclocal.m4, # because the time-stamp-setting operation (utime) has a # resolution of only 1 second. Work around the problem by # ensuring that there is at least a one-second window before the # time stamp of aclocal.m4t in which no file time stamps can # fall. sleep 1; run_aclocal ($aclocal, $aclocal_flags); } # We might have to rerun aclocal if Libtool (or others) imports new # macros. my $rerun_aclocal = 0; # ------------------------------- # # See what tools will be needed. # # ------------------------------- # # Perform a single trace reading to avoid --force forcing a rerun # between two --trace, that's useless. If there is no AC_INIT, then # we are not interested: it looks like a Cygnus thingy. my $aux_dir; my $uses_gettext_via_traces; my $uses_libtool; my $uses_libltdl; my $uses_autoheader; my $uses_automake; my @subdir; verb "$configure_ac: tracing"; my $traces = new Autom4te::XFile ("$autoconf" . join (' ', map { ' --trace=' . $_ . ':\$n::\${::}%' } # If you change this list, update the # `Autoreconf-preselections' section of autom4te.in. 'AC_CONFIG_AUX_DIR', 'AC_CONFIG_HEADERS', 'AC_CONFIG_SUBDIRS', 'AC_INIT', 'AC_PROG_LIBTOOL', 'AM_PROG_LIBTOOL', 'LT_INIT', 'LT_CONFIG_LTDL_DIR', 'AM_GNU_GETTEXT', 'AM_INIT_AUTOMAKE', ) . ' |'); while ($_ = $traces->getline) { chomp; my ($macro, @args) = split (/::/); $aux_dir = $args[0] if $macro eq "AC_CONFIG_AUX_DIR"; $uses_autoconf = 1 if $macro eq "AC_INIT"; $uses_gettext_via_traces = 1 if $macro eq "AM_GNU_GETTEXT"; $uses_libtool = 1 if $macro eq "AC_PROG_LIBTOOL" || $macro eq "AM_PROG_LIBTOOL" || $macro eq "LT_INIT"; $uses_libltdl = 1 if $macro eq "LT_CONFIG_LTDL_DIR"; $uses_autoheader = 1 if $macro eq "AC_CONFIG_HEADERS"; $uses_automake = 1 if $macro eq "AM_INIT_AUTOMAKE"; push @subdir, split (' ', $args[0]) if $macro eq "AC_CONFIG_SUBDIRS" && $recursive; } # The subdirs are *optional*, they may not exist. foreach (@subdir) { if (-d) { verb "$configure_ac: adding subdirectory $_ to autoreconf"; autoreconf ($_); } else { verb "$configure_ac: subdirectory $_ not present"; } } # Gettext consistency checks... error "$configure_ac: AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION" if $uses_gettext_via_traces && ! $uses_gettext; error "$configure_ac: AM_GNU_GETTEXT_VERSION is used, but not AM_GNU_GETTEXT" if $uses_gettext && ! $uses_gettext_via_traces; # ---------------------------- # # Setting up the source tree. # # ---------------------------- # # libtoolize, automake --add-missing etc. will drop files in the # $AUX_DIR. But these tools fail to install these files if the # directory itself does not exist, which valid: just imagine a CVS # repository with hand written code only (there is not even a need # for a Makefile.am!). if (defined $aux_dir && ! -d $aux_dir) { verb "$configure_ac: creating directory $aux_dir"; mkdir $aux_dir, 0755 or error "cannot create $aux_dir: $!"; } # -------------------- # # Running libtoolize. # # -------------------- # if (!$uses_libtool) { verb "$configure_ac: not using Libtool"; } elsif ($install) { if ($uses_libltdl) { $libtoolize .= " --ltdl"; } xsystem_hint ("libtoolize is needed because this package uses Libtool", $libtoolize); $rerun_aclocal = 1; } else { verb "$configure_ac: not running libtoolize: --install not given"; } # ------------------- # # Rerunning aclocal. # # ------------------- # # If we re-installed Libtool or Gettext, the macros might have changed. # Automake also needs an up-to-date aclocal.m4. if ($rerun_aclocal) { if (!$uses_aclocal) { verb "$configure_ac: not using aclocal"; } else { run_aclocal ($aclocal, $aclocal_flags); } } # ------------------ # # Running autoconf. # # ------------------ # # Don't try to be smarter than `autoconf', which does its own up to # date checks. # # We prefer running autoconf before autoheader, because (i) the # latter runs the former, and (ii) autoconf is stricter than # autoheader. So all in all, autoconf should give better error # messages. xsystem ($autoconf); # -------------------- # # Running autoheader. # # -------------------- # # We now consider that if AC_CONFIG_HEADERS is used, then autoheader # is used too. # # Just as for autoconf, up to date ness is performed by the tool # itself. # # Run it before automake, since the latter checks the presence of # config.h.in when it sees an AC_CONFIG_HEADERS. if (!$uses_autoheader) { verb "$configure_ac: not using Autoheader"; } else { xsystem ($autoheader); } # ------------------ # # Running automake. # # ------------------ # if (!$uses_automake) { verb "$configure_ac: not using Automake"; } else { # We should always run automake, and let it decide whether it shall # update the file or not. In fact, the effect of `$force' is already # included in `$automake' via `--no-force'. xsystem ($automake); } # -------------- # # Running make. # # -------------- # if ($run_make) { if (!-f "config.status") { verb "no config.status: cannot re-make"; } else { xsystem ("./config.status --recheck"); xsystem ("./config.status"); if (!-f "Makefile") { verb "no Makefile: cannot re-make"; } else { xsystem ("$make"); } } } } # &autoreconf ($DIRECTORY) # ------------------------ # Reconf the $DIRECTORY. sub autoreconf ($) { my ($directory) = @_; my $cwd = cwd; # The format for this message is not free: taken from Emacs, itself # using GNU Make's format. verb "Entering directory `$directory'"; chdir $directory or error "cannot chdir to $directory: $!"; autoreconf_current_directory; # The format is not free: taken from Emacs, itself using GNU Make's # format. verb "Leaving directory `$directory'"; chdir $cwd or error "cannot chdir to $cwd: $!"; } ## ------ ## ## Main. ## ## ------ ## # When debugging, it is convenient that all the related temporary # files be at the same place. mktmpdir ('ar'); $ENV{'TMPDIR'} = $tmp; parse_args; # Autoreconf all the given configure.ac. Unless `--no-recursive' is passed, # AC_CONFIG_SUBDIRS will be traversed in &autoreconf_current_directory. $ENV{'AUTOM4TE'} = $autom4te; for my $directory (@ARGV) { require_configure_ac ($directory); autoreconf ($directory); } ### Setup "GNU" style for perl-mode and cperl-mode. ## Local Variables: ## perl-indent-level: 2 ## perl-continued-statement-offset: 2 ## perl-continued-brace-offset: 0 ## perl-brace-offset: 0 ## perl-brace-imaginary-offset: 0 ## perl-label-offset: -2 ## cperl-indent-level: 2 ## cperl-brace-offset: 0 ## cperl-continued-brace-offset: 0 ## cperl-label-offset: -2 ## cperl-extra-newline-before-brace: t ## cperl-merge-trailing-else: nil ## cperl-continued-statement-offset: 2 ## End: