+check_for_application()
+{
+ for PROG in "$@"
+ do
+ which "$PROG" >/dev/null 2>&1
+ if test $? -ne 0; then
+ cat >&2 <<EOF
+WARNING: \`$PROG' not found!
+ Please make sure that \`$PROG' is installed and is in one of the
+ directories listed in the PATH environment variable.
+EOF
+ GLOBAL_ERROR_INDICATOR=1
+ fi
+ done
+}
+
+check_for_application lex bison autoheader aclocal automake autoconf pkg-config
+
+libtoolize=""
+libtoolize --version >/dev/null 2>/dev/null
+if test $? -eq 0; then
+ libtoolize=libtoolize
+else
+ glibtoolize --version >/dev/null 2>/dev/null
+ if test $? -eq 0; then
+ libtoolize=glibtoolize
+ else
+ cat >&2 <<EOF
+WARNING: Neither \`libtoolize' nor \`glibtoolize' have been found!
+ Please make sure that one of them is installed and is in one of the
+ directories listed in the PATH environment variable.
+EOF
+ GLOBAL_ERROR_INDICATOR=1
+ fi
+ fi
+
+if test "$GLOBAL_ERROR_INDICATOR" != "0"; then
+ exit 1