Fix dependency generation when GhcLibWays = dyn p
[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
14 $(call trace, build-dependencies($1,$2,$3))
15 $(call profStart, build-dependencies($1,$2,$3))
16 # $1 = dir
17 # $2 = distdir
18 # $3 = GHC stage to use (0 == bootstrapping compiler)
19
20 $1_$2_depfile_haskell = $$($1_$2_depfile_base).haskell
21 $1_$2_depfile_c_asm = $$($1_$2_depfile_base).c_asm
22
23 $1_$2_C_FILES_DEPS = $$(filter-out $$($1_$2_C_FILES_NODEPS),$$($1_$2_C_FILES))
24
25 $1_$2_MKDEPENDHS_FLAGS = -dep-makefile $$($1_$2_depfile_haskell).tmp $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-dep-suffix $$(way))
26 $1_$2_MKDEPENDHS_FLAGS += -include-pkg-deps
27 # Setting hisuf/osuf is a kludge. If DYNAMIC_BY_DEFAULT is on, dyn is
28 # the first way, and p is another way, then without this kludge we run
29 # ghc -M -hisuf dyn_hi -osuf dyn_o -dep-suffix dyn -dep-suffix p
30 # which means we get dependencies for .dyn_hi/.dyn_o and .p_dyn_hi/.p_dyn_o
31 # rather than .dyn_hi/.dyn_o and .p_hi/.p_o.
32 # With the kludge we also get .hi/.o dependencies that we don't need, but
33 # they don't do any harm.
34 # We also specify -static, as otherwise we end up with some dependencies
35 # on .dyn_dyn_hi files
36 $1_$2_MKDEPENDHS_FLAGS += -static -hisuf hi -osuf o
37
38 ifneq "$$(NO_GENERATED_MAKEFILE_RULES)" "YES"
39
40 # Some of the Haskell files (e.g. utils/hsc2hs/Main.hs) (directly or
41 # indirectly) include the generated includes files.
42 $$($1_$2_depfile_haskell) : $$(includes_H_CONFIG) $$(includes_H_PLATFORM)
43
44 $$($1_$2_depfile_haskell) : $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$($1_$2_HC_MK_DEPEND_DEP) | $$$$(dir $$$$@)/.
45 $$(call removeFiles,$$@.tmp)
46 ifneq "$$($1_$2_HS_SRCS)" ""
47 "$$($1_$2_HC_MK_DEPEND)" -M \
48 $$(filter-out -split-objs, $$($1_$2_$$(firstword $$($1_$2_WAYS))_ALL_HC_OPTS)) \
49 $$($1_$2_MKDEPENDHS_FLAGS) \
50 $$($1_$2_HS_SRCS)
51 endif
52 echo "$1_$2_depfile_haskell_EXISTS = YES" >> $$@.tmp
53 ifneq "$$($1_$2_SLASH_MODS)" ""
54 for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \
55 if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \
56 done
57 endif
58 # Some packages are from the bootstrapping compiler, so are not
59 # within the build tree. On Windows this causes a problem as they look
60 # like bad rules, due to the two colons, so we filter them out.
61 grep -v ' : [a-zA-Z]:/' $$@.tmp > $$@
62
63 # Some of the C files (directly or indirectly) include the generated
64 # includes files.
65 $$($1_$2_depfile_c_asm) : $$(includes_H_CONFIG) $$(includes_H_PLATFORM)
66
67 $$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) | $$$$(dir $$$$@)/.
68 $$(call removeFiles,$$@.tmp)
69 ifneq "$$(strip $$($1_$2_C_FILES_DEPS)$$($1_$2_S_FILES))" ""
70 # We ought to actually do this for each way in $$($1_$2_WAYS), but then
71 # it takes a long time to make the C deps for the RTS (30 seconds rather
72 # than 3), so instead we just pass the list of ways in and let addCFileDeps
73 # copy the deps for each way on the assumption that they are the same
74 $$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES), \
75 $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS)))
76 $$(call removeFiles,$$@.bit)
77 endif
78 echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp
79 mv $$@.tmp $$@
80
81 endif # NO_GENERATED_MAKEFILE_RULES
82
83 # Note sed magic above: mkdependC can't do -odir stuff, so we have to
84 # munge the dependencies it generates to refer to the correct targets.
85
86 $(call profEnd, build-dependencies($1,$2,$3))
87 endef
88
89 # This comment is outside the "define addCFileDeps" as that definition
90 # is a list of command lines, and if it is inside it then we pass this
91 # comment to the shell every time we call the definition.
92 # $1 = dir
93 # $2 = distdir
94 # $3 = depfile
95 # $4 = file
96 # $5 = ways
97 #
98 # The formatting of this definition (e.g. the blank line above) is
99 # important, in order to get make to generate the right makefile code.
100 #
101 # 's|\\|/|g'
102 # We first normalise all slashes to be forward slashes. Note that
103 # $(TOP) also uses forward slashes.
104 # 's| /$$| \\|'
105 # But now we need to fix the line continuation characters that we
106 # just broke.
107 # "1s|\.o|\.$($w_osuf)|"
108 # We will have dependencies for .o files, so we need to fix them up
109 # for the right object suffix for the way we're doing
110 # "1s|^|$(dir $4)|"
111 # We always get deps for just foo.o when the file we're making is
112 # a/b/c/foo.o, so we need to prepend the directory of the source file
113 # "1s|$1/|$1/$2/build/|"
114 # Well, almost. We actually need to insert e.g. "dist/build" in the
115 # middle of that directory
116 # "1s|$2/build/$2/build|$2/build|g"
117 # But some source files, e.g. sm/Evac_thr.c, are also inside the
118 # "dist/build" directory, so now we've just made
119 # "dist/build/dist/build", so we need to remove the duplication
120 # again
121 # "s|$(TOP)/||g$(CASE_INSENSITIVE_SED)"
122 # Finally, when making deps for packages like ghc stage2, we have
123 # some include paths for packages registered in the in-tree package
124 # database. These include paths are full (i.e. not relative) paths,
125 # which means that the "cpp -MM" output uses full paths in some cases.
126 # This causes 2 problems:
127 # * they don't match up with the rules to rebuild the files, where
128 # appropriate.
129 # * on Windows, make interprets the colon in c:/foo/bar.h as make
130 # syntax.
131 # So we sed off $(TOP). Unfortunately, on Windows, the case for the
132 # drive letter is sometimes different in what $(TOP) starts with, and
133 # what the path in the package database starts with. We therefore
134 # need to do the substitution case-insensitively on Windows. But
135 # the s///i modifier isn't portable, so we set CASE_INSENSITIVE_SED
136 # to "i" on Windows and "" on any other platform.
137 define addCFileDeps
138
139 $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_$(firstword $($1_$2_WAYS))_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit
140 $(foreach w,$5,sed -e 's|\\|/|g' -e 's| /$$| \\|' -e "1s|\.o|\.$($w_osuf)|" -e "1s|^|$(dir $4)|" -e "1s|$1/|$1/$2/build/|" -e "1s|$2/build/$2/build|$2/build|g" -e "s|$(TOP)/||g$(CASE_INSENSITIVE_SED)" $3.bit >> $3.tmp &&) true
141 endef
142
143 ifeq "$(Windows)" "YES"
144 CASE_INSENSITIVE_SED = i
145 else
146 CASE_INSENSITIVE_SED =
147 endif
148