5f65e737b3413b406268476044be1f67d8866547
[ghc.git] / rules / build-dependencies.mk
1 # -----------------------------------------------------------------------------
2 #
3 # (c) 2009 The University of Glasgow
4 #
5 # This file is part of the GHC build system.
6 #
7 # To understand how the build system works and how to modify it, see
8 # http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
9 # http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
10 #
11 # -----------------------------------------------------------------------------
12
13 define build-dependencies # args: $1 = dir, $2 = distdir
14
15 $1_$2_depfile_haskell = $$($1_$2_depfile_base).haskell
16 $1_$2_depfile_c_asm = $$($1_$2_depfile_base).c_asm
17
18 $1_$2_C_FILES_DEPS = $$(filter-out $$($1_$2_C_FILES_NODEPS),$$($1_$2_C_FILES))
19
20 ifeq "$$($1_$2_ghc_ge_609)" "YES"
21 $1_$2_MKDEPENDHS_FLAGS = -include-pkg-deps -dep-makefile $$($1_$2_depfile_haskell).tmp $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-dep-suffix $$(way))
22 else
23 $1_$2_MKDEPENDHS_FLAGS = -optdep--include-pkg-deps -optdep-f -optdep$$($1_$2_depfile_haskell).tmp $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-optdep-s -optdep$$(way))
24 endif
25
26 ifneq "$$($1_$2_NO_BUILD_DEPS)" "YES"
27
28 $$($1_$2_depfile_haskell) : $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$($1_$2_HC_MK_DEPEND_DEP) | $$$$(dir $$$$@)/.
29 "$$(RM)" $$(RM_OPTS) $$@.tmp
30 touch $$@.tmp
31 ifneq "$$($1_$2_HS_SRCS)" ""
32 "$$($1_$2_HC_MK_DEPEND)" -M $$($1_$2_MKDEPENDHS_FLAGS) \
33 $$(filter-out -split-objs, $$($1_$2_v_ALL_HC_OPTS)) \
34 $$($1_$2_HS_SRCS)
35 endif
36 echo "$1_$2_depfile_haskell_EXISTS = YES" >> $$@.tmp
37 ifneq "$$($1_$2_SLASH_MODS)" ""
38 for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \
39 if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \
40 done
41 endif
42 mv $$@.tmp $$@
43
44 $$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) | $$$$(dir $$$$@)/.
45 "$$(RM)" $$(RM_OPTS) $$@.tmp
46 touch $$@.tmp
47 ifneq "$$(strip $$($1_$2_C_FILES_DEPS)$$($1_$2_S_FILES))" ""
48 # We ought to actually do this for each way in $$($1_$2_WAYS), but then
49 # it takes a long time to make the C deps for the RTS (30 seconds rather
50 # than 3), so instead we just pass the list of ways in and let addCFileDeps
51 # copy the deps for each way on the assumption that they are the same
52 $$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES), \
53 $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS)))
54 "$$(RM)" $$(RM_OPTS) $$@.bit
55 endif
56 echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp
57 mv $$@.tmp $$@
58
59 endif # $1_$2_NO_BUILD_DEPS
60
61 # Note sed magic above: mkdependC can't do -odir stuff, so we have to
62 # munge the dependencies it generates to refer to the correct targets.
63
64 # Seems as good a place as any to attach the unlit dependency
65 $$($1_$2_depfile_haskell) : $$(UNLIT)
66
67 ifneq "$$(NO_INCLUDE_DEPS)" "YES"
68 include $$($1_$2_depfile_haskell)
69 include $$($1_$2_depfile_c_asm)
70 else
71 ifeq "$$(DEBUG)" "YES"
72 $$(warning not building dependencies in $1)
73 endif
74 endif
75
76 endef
77
78 # This comment is outside the "define addCFileDeps" as that definition
79 # is a list of command lines, and if it is inside it then we pass this
80 # comment to the shell every time we call the definition.
81 # $1 = dir
82 # $2 = distdir
83 # $3 = depfile
84 # $4 = file
85 # $5 = ways
86 # The formatting of this definition (e.g. the blank line above) is
87 # important, in order to get make to generate the right makefile code.
88 define addCFileDeps
89
90 $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_v_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit
91 $(foreach w,$5,sed -e "1s|\.o|\.$($w_osuf)|" -e "1s|^|$(dir $4)|" -e "1s|$1/|$1/$2/build/|" -e "s|$(TOP)/||gi" -e "s|$2/build/$2/build|$2/build|g" $3.bit >> $3.tmp &&) true
92 endef
93