build-system/gnu: Add 'bootstrap' phase.

This factorizes what has become a widespread idiom.

* guix/build/gnu-build-system.scm (%bootstrap-scripts): New variable.
(bootstrap): New procedure.
(%standard-phases): Add it after 'unpack'.
* guix/build/ant-build-system.scm (%standard-phases): Delete 'bootstrap.
* guix/build/asdf-build-system.scm (%standard-phases/source)
(%standard-phases): Likewise.
* guix/build/cargo-build-system.scm (%standard-phases): Likewise.
* guix/build/cmake-build-system.scm (%standard-phases): Likewise.
* guix/build/dub-build-system.scm (%standard-phases): Likewise.
* guix/build/emacs-build-system.scm (%standard-phases): Likewise.
* guix/build/font-build-system.scm (%standard-phases): Likewise.
* guix/build/go-build-system.scm (%standard-phases): Likewise.
* guix/build/haskell-build-system.scm (%standard-phases): Likewise.
* guix/build/minify-build-system.scm (%standard-phases): Likewise.
* guix/build/ocaml-build-system.scm (%standard-phases): Likewise.
* guix/build/perl-build-system.scm (%standard-phases): Likewise.
* guix/build/python-build-system.scm (%standard-phases): Likewise.
* guix/build/r-build-system.scm (%standard-phases): Likewise.
* guix/build/ruby-build-system.scm (%standard-phases): Likewise.
* guix/build/scons-build-system.scm (%standard-phases): Likewise.
* guix/build/texlive-build-system.scm (%standard-phases): Likewise.
* guix/build/waf-build-system.scm (%standard-phases): Likewise.
* gnu/packages/audio.scm (faad2)[arguments]: Replace 'bootstrap.
(soundtouch, cuetools, bluez-alsa): Remove 'arguments'.
(cava)[arguments]: Replace 'bootstrap.
* gnu/packages/backup.scm (rdup): Remove 'bootstrap.
* gnu/packages/bioinformatics.scm (seek)[arguments]: Replace
'bootstrap.
* gnu/packages/bioinformatics.scm (htslib-for-sambamba): Remove
'arguments'.
* gnu/packages/ci.scm (hydra, cuirass): Remove 'bootstrap'.
* gnu/packages/crypto.scm (libb2): Remove #:phases.
* gnu/packages/databases.scm (guile-wiredtiger): Likewise.
* gnu/packages/debug.scm (stress-make): Remove 'bootstrap'.
* gnu/packages/documentation.scm (asciidoc): Likewise.
* gnu/packages/fontutils.scm (libuninameslist): Remove 'arguments'.
* gnu/packages/ftp.scm (weex): Remove 'arguments'.
* gnu/packages/game-development.scm (ois): Remove 'arguments'.
* gnu/packages/games.scm (pioneer): Remove 'bootstrap.
* gnu/packages/gnome.scm (vte-ng, byzanz): Replace 'bootstrap.
(arc-theme): Remove 'arguments'.
(faba-icon-theme): Remove 'bootstrap.
(arc-icon-theme): Remove 'arguments'.
* gnu/packages/gnunet.scm (guile-gnunet): Likewise.
* gnu/packages/gtk.scm (guile-rsvg): Likewise.
* gnu/packages/guile.scm (mcron2): Remove 'bootstrap.
(guile-bash): Remove #:phases.
(guile-git): Remove 'bootstrap.
(guile-syntax-highlight): Remove 'arguments'.
(guile-sjson): Likewise.
* gnu/packages/java.scm (classpath-devel): Remove 'bootstrap.
* gnu/packages/kodi.scm (libdvdnav/kodi)
(libdvdread/kodi, libdvdcss/kodi): Likewise.
* gnu/packages/libreoffice.scm (hunspell): Remove 'arguments'.
* gnu/packages/libusb.scm (hidapi): Likewise.
* gnu/packages/linux.scm (bridge-utils): Rename 'bootstrap' to
'patch-stuff'; move it before 'bootstrap', without autoreconf
invocation.
(eudev): Rename 'bootstrap' to 'patch-file-names', without 'autogen.sh'
invocation; move it before 'bootstrap.
(gpm): Replace 'bootstrap'.
(f2fs-tools): Remove 'arguments'.
(rng-tools): Remove #:phases.
* gnu/packages/messaging.scm (hexchat): Rename 'bootstrap' to
'copy-intltool-makefile'; remove "autoreconf" invocation and move before
'bootstrap'.
(libmesode): Remove 'arguments'.
(libstrophe): Likewise.
* gnu/packages/microcom.scm (microcom): Likewise.
* gnu/packages/networking.scm (libnet): Remove 'bootstrap.
* gnu/packages/onc-rpc.scm (libnsl): Remove 'arguments'.
* gnu/packages/package-management.scm (guix): Replace 'bootstrap.
* gnu/packages/sawfish.scm (librep): Remove 'arguments'.
* gnu/packages/version-control.scm (findnewest): Likewise.
* gnu/packages/video.scm (liba52, handbrake, motion): Replace
'bootstrap.
* gnu/packages/web.scm (fcgiwrap): Remove #:phases.
(tidy): Replace 'bootstrap.
(gumbo-parser): Remove #:phases.
* gnu/packages/wget.scm (wget2): Replace 'bootstrap.
* gnu/packages/wm.scm (i3lock-color): Remove #:phases.
* gnu/packages/xdisorg.scm (xclip): Likewise.
* gnu/packages/xml.scm (libxls): Replace 'bootstrap'.
* gnu/packages/xorg.scm (xf86-video-freedreno)
(xf86-video-intel): Remove #:phases.
* gnu/packages/zile.scm (zile-on-guile): Replace 'bootstrap.

guix/build/gnu-build-system.scm

@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -159,6 +159,43 @@ working directory."
                (zero? (system* "tar" "xvf" source)))
            (chdir (first-subdirectory ".")))))
 
+(define %bootstrap-scripts
+  ;; Typical names of Autotools "bootstrap" scripts.
+  '("bootstrap" "bootstrap.sh" "autogen.sh"))
+
+(define* (bootstrap #:key (bootstrap-scripts %bootstrap-scripts)
+                    #:allow-other-keys)
+  "If the code uses Autotools and \"configure\" is missing, run
+\"autoreconf\".  Otherwise do nothing."
+  ;; Note: Run that right after 'unpack' so that the generated files are
+  ;; visible when the 'patch-source-shebangs' phase runs.
+  (if (not (file-exists? "configure"))
+
+      ;; First try one of the BOOTSTRAP-SCRIPTS.  If none exists, and it's
+      ;; clearly an Autoconf-based project, run 'autoreconf'.  Otherwise, do
+      ;; nothing (perhaps the user removed or overrode the 'configure' phase.)
+      (let ((script (find file-exists? bootstrap-scripts)))
+        ;; GNU packages often invoke the 'git-version-gen' script from
+        ;; 'configure.ac' so make sure it has a valid shebang.
+        (false-if-file-not-found
+         (patch-shebang "build-aux/git-version-gen"))
+
+        (if script
+            (let ((script (string-append "./" script)))
+              (format #t "running '~a'~%" script)
+              (if (executable-file? script)
+                  (begin
+                    (patch-shebang script)
+                    (invoke script))
+                  (invoke "sh" script)))
+            (if (or (file-exists? "configure.ac")
+                    (file-exists? "configure.in"))
+                (invoke "autoreconf" "-vif")
+                (format #t "no 'configure.ac' or anything like that, \
+doing nothing~%"))))
+      (format #t "GNU build system bootstrapping not needed~%"))
+  #t)
+
 ;; See <http://bugs.gnu.org/17840>.
 (define* (patch-usr-bin-file #:key native-inputs inputs
                              (patch-/usr/bin/file? #t)
@@ -672,6 +709,7 @@ which cannot be found~%"
   (let-syntax ((phases (syntax-rules ()
                          ((_ p ...) `((p . ,p) ...)))))
     (phases set-SOURCE-DATE-EPOCH set-paths install-locale unpack
+            bootstrap
             patch-usr-bin-file
             patch-source-shebangs configure patch-generated-file-shebangs
             build check install