ifeq ($(NOISY_BUILD),)
SUBMAKE?=$(MAKE) --quiet --no-print-directory
ECHO_PREFIX?=@
CMD_PREFIX?=@
QUIET_CONFIGURE=-q
REALLY_QUIET=&>/dev/null
else
SUBMAKE?=$(MAKE)
ECHO_PREFIX?=@\#
CMD_PREFIX?=
QUIET_CONFIGURE=
REALLY_QUIET=
endif

DOWNLOAD := $(shell which wget 2>/dev/null)
DOWNLOAD := $(if $(DOWNLOAD),$(DOWNLOAD) -O- ,)

ifeq ($(DOWNLOAD),)
DOWNLOAD := $(shell which curl 2>/dev/null)
DOWNLOAD := $(if $(DOWNLOAD), $(DOWNLOAD) -L ,)
endif

ifeq ($(DOWNLOAD),)
DOWNLOAD := echo "No download program available" ; exit 1;
endif

export SUBMAKE
export ECHO_PREFIX
export CMD_PREFIX
export QUIET_CONFIGURE
export REALLY_QUIET
export ASTTOPDIR
export ASTSBINDIR
export DESTDIR
export ASTDATADIR