freetype2/src/base/rules.mk

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#
# FreeType 2 base layer configuration rules
#
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# Copyright (C) 1996-2022 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.
# It sets the following variables which are used by the master Makefile
# after the call:
#
# BASE_OBJ_S: The single-object base layer.
# BASE_OBJ_M: A list of all objects for a multiple-objects build.
# BASE_EXT_OBJ: A list of base layer extensions, i.e., components found
# in `src/base' which are not compiled within the base
# layer proper.
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BASE_COMPILE := $(CC) $(ANSIFLAGS) \
$I$(subst /,$(COMPILER_SEP),$(BASE_DIR)) \
$(INCLUDE_FLAGS) \
$(FT_CFLAGS)
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# Base layer sources
#
# ftsystem, ftinit, and ftdebug are handled by freetype.mk
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#
# All files listed here should be included in `ftbase.c' (for a `single'
# build).
#
BASE_SRC := $(BASE_DIR)/ftadvanc.c \
$(BASE_DIR)/ftcalc.c \
$(BASE_DIR)/ftcolor.c \
$(BASE_DIR)/ftdbgmem.c \
$(BASE_DIR)/fterrors.c \
$(BASE_DIR)/ftfntfmt.c \
$(BASE_DIR)/ftgloadr.c \
$(BASE_DIR)/fthash.c \
$(BASE_DIR)/ftlcdfil.c \
$(BASE_DIR)/ftobjs.c \
$(BASE_DIR)/ftoutln.c \
$(BASE_DIR)/ftpsprop.c \
$(BASE_DIR)/ftrfork.c \
$(BASE_DIR)/ftsnames.c \
$(BASE_DIR)/ftstream.c \
$(BASE_DIR)/fttrigon.c \
$(BASE_DIR)/ftutil.c
ifneq ($(ftmac_c),)
BASE_SRC += $(BASE_DIR)/$(ftmac_c)
endif
# for simplicity, we also handle `md5.c' (which gets included by `ftobjs.h')
BASE_H := $(BASE_DIR)/ftbase.h \
$(BASE_DIR)/md5.c \
$(BASE_DIR)/md5.h
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# Base layer `extensions' sources
#
Implement new, simplified module selection. With GNU make it is now sufficient to modify a single file, `modules.cfg', to control the inclusion of modules and base extension files. This change also fixes the creation of ftmodule.h; it now depends on `modules.cfg' and thus is rebuilt only if necessary. Finally, a version of `ftoption.h' in OBJ_DIR is preferred over the default location. * modules.cfg: New file. * builds/freetype.mk: Don't include `modules.mk'. Include all `rules.mk' files as specified in `modules.cfg'. (FTOPTION_FLAG, FTOPTION_H): New variables. (FT_CFLAGS): Add macro definition for FT_CONFIG_MODULES_H. Add FTOPTION_FLAG. ($(FT_INIT_OBJ)): Don't use FT_MODULE_LIST. (CONFIG_H): Add FTMODULE_H and FTOPTION_H. (INCLUDES): Add DEVEL_DIR. (INCLUDE_FLAGS, FTSYS_SRC, FTSYS_OBJ, FTDEBUG_SRC, FTDEBUG_OBJ, OBJ_M, OBJ_S): Use `:=', not `='. (remove_ftmodule_h): New phony target to delete `ftmodule.h'. (distclean): Add remove_ftmodule_h. * builds/modules.mk: (MODULE_LIST): Removed. (make_module_list, clean_module_list): Replace targets with... (FTMODULE_H_INIT, FTMODULE_H_CREATE, FTMODULE_H_DONE): New variables. Reason for the change is that it is not possible to have a phony prerequisite which is run only if the target file must be rebuilt (phony prerequisites act like subroutines and are *always* executed). We only want to rebuild `ftmodule.h' if `module.cfg' is changed. Update all callers. ($FTMODULE_H)): Rule to create `ftmodule.h', depending on `modules.cfg'. * builds/toplevel.mk: Rewrite and simplify module handling. (MODULES_CFG, FTMODULE_H): New variables. Include MODULES_CFG. (MODULES): New variable to include all `module.mk' and `rules.mk' files. We no longer use make's `wildcard' function for this. * Makefile (USE_MODULES): Remove. Update all users. (OBJ_DIR): Define it here. * src/*/module.mk: Change make_module_list: foo foo: ... to FTMODULE_H_COMMANDS += FOO define FOO ... endef in all files. `FTMODULE_H_COMMANDS' is used in `FTMODULE_H_CREATE'. * src/base/rules.mk (BASE_EXT_SRC): Use BASE_EXTENSIONS. * builds/unix/detect.mk (setup): Always execute `configure' script. (have_mk): Rename to... (have_Makefile): This. Don't use `strip' function. * builds/unix/unix.mk: Include `install.mk' only if BUILD_PROJECT is defined. (have_mk): Don't use `strip' function. Test for unix-def.mk in OBJ_DIR, not BUILD_DIR (and invert the test accordingly). * builds/unix/install.mk (install, uninstall): Handle `ftmodule.h'. * builds/os2/os2-dev.mk, builds/unix/unix-dev.mk, builds/win32/w32-bccd.mk, builds/win32/w32-dev.mk: Don't define BUILD_DIR but DEVEL_DIR for development header files. * builds/ansi/ansi-def.mk (TOP_DIR, OBJ_DIR), builds/beos/beos-def.mk (TOP_DIR, OBJ_DIR), builds/unix/unix-def.in (TOP_DIR, OBJ_DIR): Removed. Defined elsewhere. * builds/dos/dos-def.mk (OBJ_DIR), builds/os2/os2-def.mk (OBJ_DIR), builds/win32/win32-def.mk (OBJ_DIR): Removed. Defined elsewhere. * builds/unix/unixddef.mk: Don't define BUILD_DIR but DEVEL_DIR for development header files. Don't define PLATFORM. * configure: Copy `modules.cfg' to builddir if builddir != srcdir. Update snippet taken from autoconf's m4sh.m4 to current CVS version. Be more verbose. * include/freetype/config/ftmodule.h: Add comments -- this file is no longer used if FreeType is built with GNU make. * docs/CHANGES, docs/CUSTOMIZE, docs/INSTALL, docs/INSTALL.ANY, docs/INSTALL.GNU, docs/INSTALL.UNX: Document new build mechanism. Other minor updates. * modules.txt: Removed. Contents included in `modules.cfg'. * include/freetype/internal/ftmemory.h (FT_QAlloc_Debug, FT_Free_Debug) [FT_STRICT_ALIASING]: Fix typos. * src/base/ftdbgmem.c (FT_Alloc_Debug, FT_Realloc_Debug, FT_QAlloc_Debug, FT_QRealloc_Debug, FT_Free_Debug) [FT_STRICT_ALIASING]: Implement.
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# An extension is added to the library file as a separate object. It is
# then linked to the final executable only if one of its symbols is used by
# the application.
#
BASE_EXT_SRC := $(patsubst %,$(BASE_DIR)/%,$(BASE_EXTENSIONS))
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# Default extensions objects
#
BASE_EXT_OBJ := $(BASE_EXT_SRC:$(BASE_DIR)/%.c=$(OBJ_DIR)/%.$O)
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# Base layer object(s)
#
# BASE_OBJ_M is used during `multi' builds (each base source file compiles
# to a single object file).
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#
# BASE_OBJ_S is used during `single' builds (the whole base layer is
# compiled as a single object file using ftbase.c).
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#
BASE_OBJ_M := $(BASE_SRC:$(BASE_DIR)/%.c=$(OBJ_DIR)/%.$O)
BASE_OBJ_S := $(OBJ_DIR)/ftbase.$O
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# Base layer root source file for single build
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#
BASE_SRC_S := $(BASE_DIR)/ftbase.c
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# Base layer - single object build
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#
$(BASE_OBJ_S): $(BASE_SRC_S) $(BASE_SRC) $(FREETYPE_H) $(BASE_H)
$(BASE_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(BASE_SRC_S))
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# Multiple objects build + extensions
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#
$(OBJ_DIR)/%.$O: $(BASE_DIR)/%.c $(FREETYPE_H) $(BASE_H)
$(BASE_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<)
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# EOF