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# -----------------------------------------------------------------------------
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# (c) 2009 The University of Glasgow
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# This file is part of the GHC build system.
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# To understand how the build system works and how to modify it, see
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# http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
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# http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
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# -----------------------------------------------------------------------------
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define build-dependencies
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$(call trace, build-dependencies($1,$2,$3))
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# $3 = GHC stage to use (0 == bootstrapping compiler)
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$1_$2_depfile_haskell = $$($1_$2_depfile_base).haskell
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$1_$2_depfile_c_asm = $$($1_$2_depfile_base).c_asm
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$1_$2_C_FILES_DEPS = $$(filter-out $$($1_$2_C_FILES_NODEPS),$$($1_$2_C_FILES))
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$1_$2_MKDEPENDHS_FLAGS = -dep-makefile $$($1_$2_depfile_haskell).tmp $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-dep-suffix $$(way))
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$1_$2_MKDEPENDHS_FLAGS += -include-pkg-deps
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ifneq "$$($1_$2_NO_BUILD_DEPS)" "YES"
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$$($1_$2_depfile_haskell) : $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$($1_$2_HC_MK_DEPEND_DEP) | $$$$(dir $$$$@)/.
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"$$(RM)" $$(RM_OPTS) $$@.tmp
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ifneq "$$($1_$2_HS_SRCS)" ""
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"$$($1_$2_HC_MK_DEPEND)" -M $$($1_$2_MKDEPENDHS_FLAGS) \
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$$(filter-out -split-objs, $$($1_$2_v_ALL_HC_OPTS)) \
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echo "$1_$2_depfile_haskell_EXISTS = YES" >> $$@.tmp
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ifneq "$$($1_$2_SLASH_MODS)" ""
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for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \
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if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \
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$$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) | $$$$(dir $$$$@)/.
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"$$(RM)" $$(RM_OPTS) $$@.tmp
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ifneq "$$(strip $$($1_$2_C_FILES_DEPS)$$($1_$2_S_FILES))" ""
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# We ought to actually do this for each way in $$($1_$2_WAYS), but then
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# it takes a long time to make the C deps for the RTS (30 seconds rather
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# than 3), so instead we just pass the list of ways in and let addCFileDeps
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# copy the deps for each way on the assumption that they are the same
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$$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES), \
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$$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS)))
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"$$(RM)" $$(RM_OPTS) $$@.bit
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echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp
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endif # $1_$2_NO_BUILD_DEPS
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# Note sed magic above: mkdependC can't do -odir stuff, so we have to
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# munge the dependencies it generates to refer to the correct targets.
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# Seems as good a place as any to attach the unlit dependency
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$$($1_$2_depfile_haskell) : $$(UNLIT)
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ifneq "$$(NO_INCLUDE_DEPS)" "YES"
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ifneq "$$(strip $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS))" ""
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ifneq "$$(NO_STAGE$3_DEPS)" "YES"
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include $$($1_$2_depfile_haskell)
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include $$($1_$2_depfile_c_asm)
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ifeq "$$(DEBUG)" "YES"
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$$(warning not building dependencies in $1)
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# This comment is outside the "define addCFileDeps" as that definition
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# is a list of command lines, and if it is inside it then we pass this
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# comment to the shell every time we call the definition.
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# The formatting of this definition (e.g. the blank line above) is
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# important, in order to get make to generate the right makefile code.
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# We first normalise all slashes to be forward slashes. Note that
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# $(TOP) also uses forward slashes.
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# But now we need to fix the line continuation characters that we
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# "1s|\.o|\.$($w_osuf)|"
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# We will have dependencies for .o files, so we need to fix them up
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# for the right object suffix for the way we're doing
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# We always get deps for just foo.o when the file we're making is
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# a/b/c/foo.o, so we need to prepend the directory of the source file
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# "1s|$1/|$1/$2/build/|"
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# Well, almost. We actually need to insert e.g. "dist/build" in the
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# middle of that directory
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# "1s|$2/build/$2/build|$2/build|g"
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# But some source files, e.g. sm/Evac_thr.c, are also inside the
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# "dist/build" directory, so now we've just made
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# "dist/build/dist/build", so we need to remove the duplication
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# "s|$(TOP)/||g$(CASE_INSENSITIVE_SED)"
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# Finally, when making deps for packages like ghc stage2, we have
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# some include paths for packages registered in the in-tree package
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# database. These include paths are full (i.e. not relative) paths,
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# which means that the "cpp -MM" output uses full paths in some cases.
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# This causes 2 problems:
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# * they don't match up with the rules to rebuild the files, where
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# * on Windows, make interprets the colon in c:/foo/bar.h as make
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# So we sed off $(TOP). Unfortunately, on Windows, the case for the
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# drive letter is sometimes different in what $(TOP) starts with, and
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# what the path in the package database starts with. We therefore
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# need to do the substitution case-insensitively on Windows. But
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# the s///i modifier isn't portable, so we set CASE_INSENSITIVE_SED
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# to "i" on Windows and "" on any other platform.
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$(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_v_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit
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$(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 >> $3.tmp &&) true
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ifeq "$(Windows)" "YES"
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CASE_INSENSITIVE_SED = i
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CASE_INSENSITIVE_SED =