#
# FreeType build system -- top-level sub-Makefile
#
# Copyright 1996-2000 by
# David Turner, Robert Wilhelm, and Werner Lemberg.
#
# This file is part of the FreeType project, and may only be used, modified,
# and distributed under the terms of the FreeType project license,
# LICENSE.TXT. By continuing to use, modify, or distribute this file you
# indicate that you have read the license and understand and accept it
# fully.
# This file is designed for GNU Make, do not use it with another Make tool!
#
# It works as follows:
#
# - When invoked for the first time, this Makefile will include the rules
# found in `PROJECT/builds/detect.mk'. They are in charge of detecting
# the current platform.
#
# A summary of the detection will be displayed, and the file `config.mk'
# will be created in the current directory.
#
# - When invoked later, this Makefile will include the rules found in
# `config.mk'. This sub-Makefile will define some system-specific
# variables (like compiler, compilation flags, object suffix, etc.), then
# include the rules found in `PROJECT/builds/PROJECT.mk', used to build
# the library.
#
# See the comments in `builds/detect.mk' and `builds/PROJECT.mk' for more
# details on host platform detection and library builds.
.PHONY: all setup distclean modules
# The `space' variable is used to avoid trailing spaces in defining the
# `T' variable later.
#
empty :=
space := $(empty) $(empty)
ifndef CONFIG_MK
CONFIG_MK := config.mk
endif
# If no configuration sub-makefile is present, or if `setup' is the target
# to be built, run the auto-detection rules to figure out which
# configuration rules file to use.
#
# Note that the configuration file is put in the current directory, which is
# not necessarily $(TOP).
# If `config.mk' is not present, set `check_platform'.
#
ifeq ($(wildcard $(CONFIG_MK)),)
check_platform := 1
endif
# If `setup' is one of the targets requested, set `check_platform'.
#
ifneq ($(findstring setup,$(MAKECMDGOALS)),)
check_platform := 1
endif
# Include the automatic host platform detection rules when we need to
# check the platform.
#
ifdef check_platform
# This is the first rule `make' sees.
#
all: setup
ifdef USE_MODULES
# If the module list $(MODULE_LIST) file is not present, generate it.
#
#modules: make_module_list setup
endif
include $(TOP)/builds/detect.mk
ifdef USE_MODULES
include $(TOP)/builds/modules.mk
ifeq ($(wildcard $(MODULE_LIST)),)
setup: make_module_list
endif
endif
# This rule makes sense for Unix only to remove files created by a run
# of the configure script which hasn't been successful (so that no
# `config.mk' has been created). It uses the built-in $(RM) command of
# GNU make. Similarly, `nul' is created if e.g. `make setup win32' has
# been erroneously used.
#
# note: This test is duplicated in "builds/toplevel.mk".
#
is_unix := $(strip $(wildcard /sbin/init) $(wildcard /hurd/auth))
ifneq ($(is_unix),)
distclean:
$(RM) builds/unix/config.cache
$(RM) builds/unix/config.log
$(RM) builds/unix/config.status
$(RM) builds/unix/unix-def.mk
$(RM) builds/unix/unix-cc.mk
$(RM) nul
endif # test is_unix
# IMPORTANT:
#
# `setup' must be defined by the host platform detection rules to create
# the `config.mk' file in the current directory.
else
# A configuration sub-Makefile is present -- simply run it.
#
all: single
ifdef USE_MODULES
modules: make_module_list
endif
BUILD_PROJECT := yes
include $(CONFIG_MK)
endif # test check_platform
# EOF
