mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-08-27 11:01:19 +00:00
The goal is twofold: firstly, we want to extend the script so that it can deal with more than a single git submodule, and secondly we'd like to reduce the amount of duplicated code. Moreover, since we're making heavy changes to the code anyway, we might as well make sure it follows a somewhat consistent coding style too. To reduce code duplication, we introduce a new --dry-run option, which can be used by third parties to figure out whether calling autogen.sh is necessary or not: this allows us to get rid of the reimplementation of part of the logic in cfg.mk and guarantee they'll never get out of sync. Other changes include: making dirty submodules checking and cleaning entirely independent of other operations; removing the use of 'set -e' and handling errors explicitly instead; better parsing of command line arguments.
197 lines
5.6 KiB
Bash
Executable File
197 lines
5.6 KiB
Bash
Executable File
#!/bin/sh
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# Run this to generate all the initial makefiles, etc.
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die()
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{
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echo "error: $1" >&2
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exit 1
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}
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starting_point=$(pwd)
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srcdir=$(dirname "$0")
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test "$srcdir" || srcdir=.
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cd "$srcdir" || {
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die "Failed to cd into $srcdir"
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}
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test -f src/libvirt.c || {
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die "$0 must live in the top-level libvirt directory"
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}
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dry_run=
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no_git=
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gnulib_srcdir=
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extra_args=
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while test "$#" -gt 0; do
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case "$1" in
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--dry-run)
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# This variable will serve both as an indicator of the fact that
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# a dry run has been requested, and to store the result of the
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# dry run. It will be ultimately used as return code for the
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# script: 0 means no action is necessary, 2 means that autogen.sh
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# needs to be executed, and 1 is reserved for failures
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dry_run=0
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shift
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;;
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--no-git)
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no_git=" $1"
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shift
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;;
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--gnulib-srcdir=*)
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gnulib_srcdir=" $1"
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shift
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;;
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--gnulib-srcdir)
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gnulib_srcdir=" $1=$2"
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shift
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shift
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;;
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--system)
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prefix=/usr
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sysconfdir=/etc
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localstatedir=/var
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if test -d $prefix/lib64; then
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libdir=$prefix/lib64
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else
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libdir=$prefix/lib
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fi
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extra_args="--prefix=$prefix --localstatedir=$localstatedir"
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extra_args="$extra_args --sysconfdir=$sysconfdir --libdir=$libdir"
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shift
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;;
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*)
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# All remaining arguments will be passed to configure verbatim
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break
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;;
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esac
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done
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no_git="$no_git$gnulib_srcdir"
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gnulib_hash()
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{
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local no_git=$1
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if test "$no_git"; then
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echo "no-git"
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return
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fi
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# Compute the hash we'll use to determine whether rerunning bootstrap
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# is required. The first is just the SHA1 that selects a gnulib snapshot.
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# The second ensures that whenever we change the set of gnulib modules used
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# by this package, we rerun bootstrap to pull in the matching set of files.
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# The third ensures that whenever we change the set of local gnulib diffs,
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# we rerun bootstrap to pull in those diffs.
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git submodule status .gnulib | awk '{ print $1 }'
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git hash-object bootstrap.conf
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git ls-tree -d HEAD gnulib/local | awk '{ print $3 }'
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}
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# Only look into git submodules if we're in a git checkout
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if test -d .git || test -f .git; then
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# Check for dirty submodules
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if test -z "$CLEAN_SUBMODULE"; then
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for path in $(git submodule status | awk '{ print $2 }'); do
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case "$(git diff "$path")" in
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*-dirty*)
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echo "error: $path is dirty, please investigate" >&2
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echo "set CLEAN_SUBMODULE to discard submodule changes" >&2
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exit 1
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;;
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esac
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done
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fi
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if test "$CLEAN_SUBMODULE" && test -z "$no_git"; then
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if test -z "$dry_run"; then
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echo "Cleaning up submodules..."
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git submodule foreach 'git clean -dfqx && git reset --hard' || {
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die "Cleaning up submodules failed"
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}
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fi
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fi
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# Update all submodules. If any of the submodules has not been
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# initialized yet, it will be initialized now; moreover, any submodule
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# with uncommitted changes will be returned to the expected state
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echo "Updating submodules..."
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git submodule update --init || {
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die "Updating submodules failed"
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}
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# The expected hash, eg. the one computed after the last
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# successful bootstrap run, is stored on disk
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state_file=.git-module-status
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expected_hash=$(cat "$state_file" 2>/dev/null)
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actual_hash=$(gnulib_hash "$no_git")
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if test "$actual_hash" = "$expected_hash" && \
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test -f po/Makevars && test -f AUTHORS; then
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# The gnulib hash matches our expectations, and all the files
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# that can only be generated through bootstrap are present:
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# we just need to run autoreconf. Unless we're performing a
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# dry run, of course...
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if test -z "$dry_run"; then
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echo "Running autoreconf..."
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autoreconf -if || {
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die "autoreconf failed"
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}
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fi
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else
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# Whenever the gnulib submodule or any of the related bits
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# has been changed in some way (see gnulib_hash) we need to
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# run bootstrap again. If we're performing a dry run, we
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# change the return code instead to signal our caller
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if test "$dry_run"; then
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dry_run=2
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else
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echo "Running bootstrap..."
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./bootstrap$no_git --bootstrap-sync || {
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die "bootstrap failed"
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}
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gnulib_hash >"$state_file"
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fi
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fi
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fi
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# When performing a dry run, we can stop here
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test "$dry_run" && exit "$dry_run"
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# If asked not to run configure, we can stop here
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test "$NOCONFIGURE" && exit 0
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cd "$starting_point" || {
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die "Failed to cd into $starting_point"
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}
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if test "$OBJ_DIR"; then
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mkdir -p "$OBJ_DIR" || {
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die "Failed to create $OBJ_DIR"
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}
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cd "$OBJ_DIR" || {
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die "Failed to cd into $OBJ_DIR"
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}
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fi
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if test -z "$*" && test -z "$extra_args" && test -f config.status; then
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echo "Running config.status..."
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./config.status --recheck || {
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die "config.status failed"
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}
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else
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if test -z "$*" && test -z "$extra_args"; then
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echo "I am going to run configure with no arguments - if you wish"
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echo "to pass any to it, please specify them on the $0 command line."
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else
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echo "Running configure with $extra_args $@"
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fi
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"$srcdir/configure" $extra_args "$@" || {
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die "configure failed"
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}
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fi
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echo
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echo "Now type 'make' to compile libvirt."
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