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