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libvirt/autogen.sh
Eric Blake d002c250cd build: improve check for out-of-date .gnulib submodule
git reset --hard 96e5a2d4d5
./autogen.sh
make -s
git pull
make -s    <-- expecting auto-bootstrap here, doesn't happen

Use git diff to expose whether the submodule has untracked changes,
which are typical on an incremental pull if .gnulib was updated but
the user did not manually run 'git submodule update'.

After this patch is applied, I encountered a new problem when
following the reproducing pattern.  Basically, the change to .gnulib
between libvirt's commit 96e5a2d4 and this patch introduced a change
to sys_ioctl.in.h, but gnulib (intentionally) does not make the
replacement headers depend on Makefile changes.  Therefore, I ended up
with the generated replacement header being broken:
gnulib/lib/sys/ioctl.h complained about a use of @.  But that seems
like something that should be fixed upstream in gnulib's bootstrap
script (that is, when doing a gnulib update, all files created from
.in.h file should probably be deleted).  Without the benefit of that
proposed gnulib fix, I worked around the problem by manually removing
the stale gnulib/lib/sys/ioctl.h.

* autogen.sh (t): Also run bootstrap if the gnulib submodule needs
to be updated.
* cfg.mk (_autogen): Likewise.
Reported by Matthias Bolte.
2010-04-02 15:49:32 -06:00

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#!/bin/sh
# Run this to generate all the initial makefiles, etc.
srcdir=`dirname "$0"`
test -z "$srcdir" && srcdir=.
THEDIR=`pwd`
cd "$srcdir"
DIE=0
(autopoint --version) < /dev/null > /dev/null 2>&1 || {
echo
echo "You must have autopoint installed to compile libvirt."
echo "Download the appropriate package for your distribution,"
echo "or see http://www.gnu.org/software/gettext"
DIE=1
}
(autoconf --version) < /dev/null > /dev/null 2>&1 || {
echo
echo "You must have autoconf installed to compile libvirt."
echo "Download the appropriate package for your distribution,"
echo "or see http://www.gnu.org/software/autoconf"
DIE=1
}
(libtool --version) < /dev/null > /dev/null 2>&1 || {
echo
echo "You must have libtool installed to compile libvirt."
echo "Download the appropriate package for your distribution,"
echo "or see http://www.gnu.org/software/libtool"
DIE=1
}
(automake --version) < /dev/null > /dev/null 2>&1 || {
echo
DIE=1
echo "You must have automake installed to compile libvirt."
echo "Download the appropriate package for your distribution,"
echo "or see http://www.gnu.org/software/automake"
}
if test "$DIE" -eq 1; then
exit 1
fi
test -f src/libvirt.c || {
echo "You must run this script in the top-level libvirt directory"
exit 1
}
EXTRA_ARGS=
if test "x$1" = "x--system"; then
shift
EXTRA_ARGS="--prefix=/usr --sysconfdir=/etc --localstatedir=/var"
echo "Running ./configure with $EXTRA_ARGS $@"
else
if test -z "$*" && test ! -f "$THEDIR/config.status"; then
echo "I am going to run ./configure with no arguments - if you wish "
echo "to pass any to it, please specify them on the $0 command line."
fi
fi
# Compute the hash we'll use to determine whether rerunning bootstrap
# is required. The first is just the SHA1 that selects a gnulib snapshot.
# The second ensures that whenever we change the set of gnulib modules used
# by this package, we rerun bootstrap to pull in the matching set of files.
bootstrap_hash()
{
git submodule status | sed 's/^[ +-]//;s/ .*//'
git hash-object bootstrap.conf
}
# Ensure that whenever we pull in a gnulib update or otherwise change to a
# different version (i.e., when switching branches), we also rerun ./bootstrap.
curr_status=.git-module-status
t=$(bootstrap_hash; git diff .gnulib)
if test "$t" = "$(cat $curr_status 2>/dev/null)"; then
: # good, it's up to date, all we need is autoreconf
autoreconf -if
else
echo running bootstrap...
./bootstrap && bootstrap_hash > $curr_status \
|| { echo "Failed to bootstrap gnulib, please investigate."; exit 1; }
fi
cd "$THEDIR"
if test "x$OBJ_DIR" != x; then
mkdir -p "$OBJ_DIR"
cd "$OBJ_DIR"
fi
if test -z "$*" && test -f config.status; then
./config.status --recheck
else
$srcdir/configure $EXTRA_ARGS "$@"
fi && {
echo
echo "Now type 'make' to compile libvirt."
}