3 # This file configures the default environment for the make system
4 # The way it works is fairly simple, each module is defined in it's
5 # own *.mak file. It expects a set of variables to be set to values
6 # for it to operate as expected. When included the module generates
7 # the requested rules based on the contents of its control variables.
9 # This works out very well and allows a good degree of flexability.
10 # To accomidate some of the features we introduce the concept of
11 # local variables. To do this we use the 'Computed Names' feature of
12 # gmake. Each module declares a LOCAL scope and access it with,
14 # This works very well but it is important to rembember that within
15 # a rule the LOCAL var is unavailble, it will have to be constructed
16 # from the information in the rule invokation. For stock rules like
17 # clean this is simple, we use a local clean rule called clean/$(LOCAL)
18 # and then within the rule $(@F) gets back $(LOCAL)! Other rules will
19 # have to use some other mechanism (filter perhaps?) The reason such
20 # lengths are used is so that each directory can contain several 'instances'
21 # of any given module. I notice that the very latest gmake has the concept
22 # of local variables for rules. It is possible this feature in conjunction
23 # with the generated names will provide a very powerfull solution indeed!
25 # A build directory is used by default, all generated items get put into
26 # there. However unlike automake this is not done with a VPATH build
27 # (vpath builds break the distinction between #include "" and #include <>)
28 # but by explicly setting the BUILD variable. Make is invoked from
29 # within the source itself which is much more compatible with compilation
35 # Search for the build directory
37 BUILD_POSSIBLE
:= $(BUILD
) $(BASE
)/$(BUILD
)
39 BUILD_POSSIBLE
:= $(BASE
) $(BASE
)/build-
$(shell uname
-m
) $(BASE
)/build
42 BUILDX
:= $(foreach i
,$(BUILD_POSSIBLE
),$(wildcard $(i
)/environment.mak
*))
43 BUILDX
:= $(patsubst %/,%,$(firstword $(dir $(BUILDX
))))
45 ifeq ($(words $(BUILDX
)),0)
47 echo Can
't find the build directory in $(BUILD_POSSIBLE) -- use BUILD=
50 override BUILD := $(BUILDX)
53 INCLUDE := $(BUILD)/include
56 OBJ := $(BUILD)/obj/$(SUBDIR)
61 LIBRARY_H = $(BASE)/buildlib/library.mak
62 DEBIANDOC_H = $(BASE)/buildlib/debiandoc.mak
63 MANPAGE_H = $(BASE)/buildlib/manpage.mak
64 PROGRAM_H = $(BASE)/buildlib/program.mak
65 COPY_H = $(BASE)/buildlib/copy.mak
66 YODL_MANPAGE_H = $(BASE)/buildlib/yodl_manpage.mak
69 LIBRARY_H += $(BASE)/buildlib/staticlibrary.mak
73 LIBRARY_H = $(BASE)/buildlib/staticlibrary.mak
76 # Source location control
77 # SUBDIRS specifies sub components of the module that
78 # may be located in subdrictories of the source dir.
79 # This should be declared before including this file
82 # Header file control.
83 # TARGETDIRS indicitates all of the locations that public headers
84 # will be published to.
85 # This should be declared before including this file
89 include $(BUILD)/environment.mak
90 CPPFLAGS+= -I$(INCLUDE)
93 # Phony rules. Other things hook these by appending to the dependency
95 .PHONY: headers library clean veryclean all binary program doc
96 .PHONY: maintainer-clean dist-clean distclean pristine sanity
98 binary: library program
99 maintainer-clean dist-clean distclean pristine sanity: veryclean
100 headers library clean veryclean program:
103 echo Very Clean done for $(SUBDIR)
105 echo Clean done for $(SUBDIR)
107 # Header file control. We want all published interface headers to go
108 # into the build directory from thier source dirs. We setup some
111 $(INCLUDE)/%.h $(addprefix $(INCLUDE)/,$(addsuffix /%.h,$(HEADER_TARGETDIRS))) : %.h
114 # Dependency generation. We want to generate a .d file using gnu cpp.
115 # For GNU systems the compiler can spit out a .d file while it is compiling,
116 # this is specified with the INLINEDEPFLAG. Other systems might have a
117 # makedep program that can be called after compiling, that's illistrated
118 # by the DEPFLAG case.
119 # Compile rules are expected to call this macro after calling the compiler
122 sed
-e
"1s/.*:/$(subst /,\\/,$@):/" $(basename $(@F
)).d
> $(DEP
)/$(@F
).d
123 -rm -f
$(basename $(@F
)).d
128 $(CXX
) $(DEPFLAG
) $(CPPFLAGS
) -o
$@
$<
129 sed
-e
"1s/.*:/$(subst /,\\/,$@):/" $(basename $(@F
)).d
> $(DEP
)/$(@F
).d
130 -rm -f
$(basename $(@F
)).d