Add a header to all build system files:
[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
14 define build-dependencies # args: $1 = dir, $2 = distdir
15
16 ifeq "$$($1_$2_ghc_ge_609)" "YES"
17 $1_$2_MKDEPENDHS_FLAGS = -include-pkg-deps -dep-makefile $$($1_$2_depfile) $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-dep-suffix $$(way))
18 else
19 $1_$2_MKDEPENDHS_FLAGS = -optdep--include-pkg-deps -optdep-f -optdep$$($1_$2_depfile) $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-optdep-s -optdep$$(way))
20 endif
21
22 ifneq "$$($1_$2_NO_BUILD_DEPS)" "YES"
23
24 $$($1_$2_depfile) : $$(MKDIRHIER) $$(MKDEPENDC) $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$($1_$2_HC_MK_DEPEND_DEP) $$($1_$2_C_FILES) $$($1_$2_S_FILES)
25 $$(MKDIRHIER) $1/$2/build
26 $(RM) $$@ $$@.tmp
27 touch $$@.tmp
28 ifneq "$$($1_$2_C_SRCS)$$($1_$2_S_SRCS)" ""
29 $$(MKDEPENDC) -f $$($1_$2_depfile).tmp $$($1_MKDEPENDC_OPTS) $$(foreach way,$$($1_WAYS),-s $$(way)) -- $$($1_$2_v_ALL_CC_OPTS) -- $$($1_$2_C_FILES) $$($1_$2_S_FILES) || ( $$(RM) $$@; exit 1 )
30 sed -e "s|$1/\([^ :]*o[ :]\)|$1/$2/build/\1|g" -e "s|$(TOP)/||" <$$($1_$2_depfile).tmp >$$($1_$2_depfile)
31 endif
32 ifneq "$$($1_$2_HS_SRCS)" ""
33 $$($1_$2_HC_MK_DEPEND) -M $$($1_$2_MKDEPENDHS_FLAGS) \
34 $$(filter-out -split-objs, $$($1_$2_v_ALL_HC_OPTS)) \
35 $$($1_$2_HS_SRCS) || ( $$(RM) $$@; exit 1 )
36 endif
37 echo "$1_$2_depfile_EXISTS = YES" >> $$@
38 ifneq "$$($1_$2_SLASH_MODS)" ""
39 for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \
40 if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \
41 done
42 endif
43
44 endif # $1_$2_NO_BUILD_DEPS
45
46 # Note sed magic above: mkdependC can't do -odir stuff, so we have to
47 # munge the dependencies it generates to refer to the correct targets.
48
49 # Seems as good a place as any to attach the unlit dependency
50 $$($1_$2_depfile) : $$(UNLIT)
51
52 ifneq "$$(NO_INCLUDE_DEPS)" "YES"
53 include $$($1_$2_depfile)
54 else
55 ifeq "$$(DEBUG)" "YES"
56 $$(warning not building dependencies in $1)
57 endif
58 endif
59
60 endef