+# If $STR is not already on a line by itself in $FILE, insert it,
+# sorting the new contents of the file and replacing $FILE with the result.
+insert_sorted_if_absent() {
+ file=$1
+ str=$2
+ test -f $file || touch $file
+ echo "$str" | sort -u - $file | cmp - $file > /dev/null \
+ || echo "$str" | sort -u - $file -o $file \
+ || exit 1
+}
+
+# Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
+# insert_sorted_if_absent.
+insert_vc_ignore() {
+ vc_ignore_file="$1"
+ case $vc_ignore_file in
+ *.gitignore)
+ # A .gitignore entry that does not start with `/' applies recursively to
+ # subdirectories, so prepend `/' to every .gitignore entry.
+ pattern=`echo "$2" | sed s,^,/,`;;
+ *)
+ pattern="$2";;
+ esac
+ insert_sorted_if_absent "$vc_ignore_file" "$pattern"
+}
+
+# Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
+found_aux_dir=no
+grep '^[ ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
+ >/dev/null && found_aux_dir=yes
+grep '^[ ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
+ >/dev/null && found_aux_dir=yes
+if test $found_aux_dir = no; then
+ echo "$0: expected line not found in configure.ac. Add the following:" >&2
+ echo " AC_CONFIG_AUX_DIR([$build_aux])" >&2
+ exit 1
+fi
+
+# If $build_aux doesn't exist, create it now, otherwise some bits
+# below will malfunction. If creating it, also mark it as ignored.
+if test ! -d $build_aux; then
+ mkdir $build_aux
+ for dot_ig in x $vc_ignore; do
+ test $dot_ig = x && continue
+ insert_vc_ignore $dot_ig $build_aux
+ done
+fi
+
+# Note this deviates from the version comparison in automake
+# in that it treats 1.5 < 1.5.0, and treats 1.4.4a < 1.4-p3a
+# but this should suffice as we won't be specifying old
+# version formats or redundant trailing .0 in bootstrap.conf.
+# If we did want full compatibility then we should probably
+# use m4_version_compare from autoconf.
+sort_ver() { # sort -V is not generally available
+ ver1="$1"
+ ver2="$2"
+
+ # split on '.' and compare each component
+ i=1
+ while : ; do
+ p1=$(echo "$ver1" | cut -d. -f$i)
+ p2=$(echo "$ver2" | cut -d. -f$i)
+ if [ ! "$p1" ]; then
+ echo "$1 $2"
+ break
+ elif [ ! "$p2" ]; then
+ echo "$2 $1"
+ break
+ elif [ ! "$p1" = "$p2" ]; then
+ if [ "$p1" -gt "$p2" ] 2>/dev/null; then # numeric comparison
+ echo "$2 $1"
+ elif [ "$p2" -gt "$p1" ] 2>/dev/null; then # numeric comparison
+ echo "$1 $2"
+ else # numeric, then lexicographic comparison
+ lp=$(printf "$p1\n$p2\n" | LANG=C sort -n | tail -n1)
+ if [ "$lp" = "$p2" ]; then
+ echo "$1 $2"
+ else
+ echo "$2 $1"
+ fi
+ fi
+ break
+ fi
+ i=$(($i+1))
+ done
+}
+
+get_version() {
+ app=$1
+
+ $app --version >/dev/null 2>&1 || return 1
+
+ $app --version 2>&1 |
+ sed -n '# extract version within line
+ s/.*[v ]\{1,\}\([0-9]\{1,\}\.[.a-z0-9-]*\).*/\1/
+ t done
+
+ # extract version at start of line
+ s/^\([0-9]\{1,\}\.[.a-z0-9-]*\).*/\1/
+ t done
+
+ d
+
+ :done
+ #the following essentially does s/5.005/5.5/
+ s/\.0*\([1-9]\)/.\1/g
+ p
+ q'
+}
+
+check_versions() {
+ ret=0
+
+ while read app req_ver; do
+ # Honor $APP variables ($TAR, $AUTOCONF, etc.)
+ appvar=`echo $app | tr '[a-z]' '[A-Z]'`
+ test "$appvar" = TAR && appvar=AMTAR
+ eval "app=\${$appvar-$app}"
+ inst_ver=$(get_version $app)
+ if [ ! "$inst_ver" ]; then
+ echo "Error: '$app' not found" >&2
+ ret=1
+ elif [ ! "$req_ver" = "-" ]; then
+ latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
+ if [ ! "$latest_ver" = "$inst_ver" ]; then
+ echo "Error: '$app' version == $inst_ver is too old" >&2
+ echo " '$app' version >= $req_ver is required" >&2
+ ret=1
+ fi
+ fi
+ done
+
+ return $ret
+}
+
+print_versions() {
+ echo "Program Min_version"
+ echo "----------------------"
+ printf "$buildreq"
+ echo "----------------------"
+ # can't depend on column -t
+}
+
+if ! printf "$buildreq" | check_versions; then
+ test -f README-prereq &&
+ echo "See README-prereq for notes on obtaining these prerequisite programs:" >&2
+ echo
+ print_versions
+ exit 1
+fi
+
+echo "$0: Bootstrapping from checked-out $package sources..."
+
+# See if we can use gnulib's git-merge-changelog merge driver.
+if test -d .git && (git --version) >/dev/null 2>/dev/null ; then
+ if git config merge.merge-changelog.driver >/dev/null ; then
+ :
+ elif (git-merge-changelog --version) >/dev/null 2>/dev/null ; then
+ echo "initializing git-merge-changelog driver"
+ git config merge.merge-changelog.name 'GNU-style ChangeLog merge driver'
+ git config merge.merge-changelog.driver 'git-merge-changelog %O %A %B'
+ else
+ echo "consider installing git-merge-changelog from gnulib"
+ fi
+fi
+
projects / bison.git / blobdiff