14.1 Building from Git

[mikadoZero <mikadozero@yandex.com>]

I am trying to follow the instruction in the Contributing section of the
manual, as I want to submit some patches.  Following "14.1 Building from
Git" I am getting an error when running `./bootstrap`.

`guix describe`
guix 19c0cdb
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 19c0cdb9e6271956015232421ef7f63a1ad001ae

Here is what I am doing that leads to the error.

`git clone https://git.savannah.gnu.org/git/guix.git`

`cd guix`

`guix environment guix`

Then I run `./bootstrap` and it gives me this error output:

+ exec autoreconf -vfi
autoreconf: Entering directory `.'
autoreconf: running: autopoint --force
Copying file ABOUT-NLS
Copying file build-aux/config.rpath
Copying file m4/codeset.m4
Copying file m4/fcntl-o.m4
Copying file m4/gettext.m4
Copying file m4/glibc2.m4
Copying file m4/glibc21.m4
Copying file m4/iconv.m4
Copying file m4/intdiv0.m4
Copying file m4/intl.m4
Copying file m4/intldir.m4
Copying file m4/intlmacosx.m4
Copying file m4/intmax.m4
Copying file m4/inttypes-pri.m4
Copying file m4/inttypes_h.m4
Copying file m4/lcmessage.m4
Copying file m4/lib-ld.m4
Copying file m4/lib-link.m4
Copying file m4/lib-prefix.m4
Copying file m4/lock.m4
Copying file m4/longlong.m4
Copying file m4/nls.m4
Copying file m4/po.m4
Copying file m4/printf-posix.m4
Copying file m4/progtest.m4
Copying file m4/size_max.m4
Copying file m4/stdint_h.m4
Copying file m4/threadlib.m4
Copying file m4/uintmax_t.m4
Copying file m4/visibility.m4
Copying file m4/wchar_t.m4
Copying file m4/wint_t.m4
Copying file m4/xsize.m4
Copying file po/guix/Makefile.in.in
Copying file po/packages/Makefile.in.in
Copying file po/guix/Makevars.template
Copying file po/packages/Makevars.template
Copying file po/guix/Rules-quot
Copying file po/packages/Rules-quot
Copying file po/guix/boldquot.sed
Copying file po/packages/boldquot.sed
Copying file po/guix/en@boldquot.header
Copying file po/packages/en@boldquot.header
Copying file po/guix/en@quot.header
Copying file po/packages/en@quot.header
Copying file po/guix/insert-header.sin
Copying file po/packages/insert-header.sin
Copying file po/guix/quot.sed
Copying file po/packages/quot.sed
Copying file po/guix/remove-potcdate.sin
Copying file po/packages/remove-potcdate.sin
autoreconf: running: aclocal --force -I m4
configure.ac:251: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/guix.m4:307: GUIX_LIBZ_LIBDIR is expanded from...
configure.ac:251: the top level
configure.ac:251: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/guix.m4:307: GUIX_LIBZ_LIBDIR is expanded from...
configure.ac:251: the top level
autoreconf: configure.ac: tracing
configure.ac:251: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/guix.m4:307: GUIX_LIBZ_LIBDIR is expanded from...
configure.ac:251: the top level
autoreconf: configure.ac: not using Libtool
autoreconf: running: /gnu/store/rfaqi3a9ls7adr4y7bgwvln3iaf69qwj-autoconf-2.69/bin/a
utoconf --force                                                                    
configure.ac:251: warning: PKG_PROG_PKG_CONFIG is m4_require'd but not m4_defun'd
m4/guix.m4:307: GUIX_LIBZ_LIBDIR is expanded from...
configure.ac:251: the top level
configure.ac:88: error: possibly undefined macro: PKG_CHECK_MODULES
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.ac:89: error: possibly undefined macro: GUILE_MODULE_AVAILABLE
configure.ac:96: error: possibly undefined macro: GUILE_PKG
configure.ac:97: error: possibly undefined macro: GUILE_PROGS
autoreconf: /gnu/store/rfaqi3a9ls7adr4y7bgwvln3iaf69qwj-autoconf-2.69/bin/autoconf f
ailed with exit status: 1