# ----------------------------------------------------------------------------- # # (c) 2009 The University of Glasgow # # This file is part of the GHC build system. # # To understand how the build system works and how to modify it, see # http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture # http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying # # ----------------------------------------------------------------------------- define build-dependencies $(call trace, build-dependencies($1,$2,$3)) $(call profStart, build-dependencies($1,$2,$3)) # $1 = dir # $2 = distdir # $3 = GHC stage to use (0 == bootstrapping compiler) $1_$2_depfile_haskell = $$($1_$2_depfile_base).haskell $1_$2_depfile_c_asm = $$($1_$2_depfile_base).c_asm $1_$2_C_FILES_DEPS = $$(filter-out $$($1_$2_C_FILES_NODEPS),$$($1_$2_C_FILES)) $1_$2_MKDEPENDHS_FLAGS = -dep-makefile $$($1_$2_depfile_haskell).tmp $$(foreach way,$$(filter-out v,$$($1_$2_WAYS)),-dep-suffix $$(way)) $1_$2_MKDEPENDHS_FLAGS += -include-pkg-deps ifneq "$$(NO_GENERATED_MAKEFILE_RULES)" "YES" # Some of the Haskell files (e.g. utils/hsc2hs/Main.hs) (directly or # indirectly) include the generated includes files. $$($1_$2_depfile_haskell) : $$(includes_H_CONFIG) $$(includes_H_PLATFORM) $$($1_$2_depfile_haskell) : $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$($1_$2_HC_MK_DEPEND_DEP) | $$$$(dir $$$$@)/. $$(call removeFiles,$$@.tmp) ifneq "$$($1_$2_HS_SRCS)" "" "$$($1_$2_HC_MK_DEPEND)" -M $$($1_$2_MKDEPENDHS_FLAGS) \ $$(filter-out -split-objs, $$($1_$2_v_ALL_HC_OPTS)) \ $$($1_$2_HS_SRCS) endif echo "$1_$2_depfile_haskell_EXISTS = YES" >> $$@.tmp ifneq "$$($1_$2_SLASH_MODS)" "" for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \ if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \ done endif # Some packages are from the bootstrapping compiler, so are not # within the build tree. On Windows this causes a problem as they look # like bad rules, due to the two colons, so we filter them out. grep -v ' : [a-zA-Z]:/' $$@.tmp > $$@ # Some of the C files (directly or indirectly) include the generated # includes files. $$($1_$2_depfile_c_asm) : $$(includes_H_CONFIG) $$(includes_H_PLATFORM) $$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) | $$$$(dir $$$$@)/. $$(call removeFiles,$$@.tmp) ifneq "$$(strip $$($1_$2_C_FILES_DEPS)$$($1_$2_S_FILES))" "" # We ought to actually do this for each way in $$($1_$2_WAYS), but then # it takes a long time to make the C deps for the RTS (30 seconds rather # than 3), so instead we just pass the list of ways in and let addCFileDeps # copy the deps for each way on the assumption that they are the same $$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES), \ $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS))) $$(call removeFiles,$$@.bit) endif echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp mv $$@.tmp $$@ endif # NO_GENERATED_MAKEFILE_RULES # Note sed magic above: mkdependC can't do -odir stuff, so we have to # munge the dependencies it generates to refer to the correct targets. $(call profEnd, build-dependencies($1,$2,$3)) endef # This comment is outside the "define addCFileDeps" as that definition # is a list of command lines, and if it is inside it then we pass this # comment to the shell every time we call the definition. # $1 = dir # $2 = distdir # $3 = depfile # $4 = file # $5 = ways # # The formatting of this definition (e.g. the blank line above) is # important, in order to get make to generate the right makefile code. # # 's|\\|/|g' # We first normalise all slashes to be forward slashes. Note that # $(TOP) also uses forward slashes. # 's| /$$| \\|' # But now we need to fix the line continuation characters that we # just broke. # "1s|\.o|\.$($w_osuf)|" # We will have dependencies for .o files, so we need to fix them up # for the right object suffix for the way we're doing # "1s|^|$(dir $4)|" # We always get deps for just foo.o when the file we're making is # a/b/c/foo.o, so we need to prepend the directory of the source file # "1s|$1/|$1/$2/build/|" # Well, almost. We actually need to insert e.g. "dist/build" in the # middle of that directory # "1s|$2/build/$2/build|$2/build|g" # But some source files, e.g. sm/Evac_thr.c, are also inside the # "dist/build" directory, so now we've just made # "dist/build/dist/build", so we need to remove the duplication # again # "s|$(TOP)/||g$(CASE_INSENSITIVE_SED)" # Finally, when making deps for packages like ghc stage2, we have # some include paths for packages registered in the in-tree package # database. These include paths are full (i.e. not relative) paths, # which means that the "cpp -MM" output uses full paths in some cases. # This causes 2 problems: # * they don't match up with the rules to rebuild the files, where # appropriate. # * on Windows, make interprets the colon in c:/foo/bar.h as make # syntax. # So we sed off $(TOP). Unfortunately, on Windows, the case for the # drive letter is sometimes different in what $(TOP) starts with, and # what the path in the package database starts with. We therefore # need to do the substitution case-insensitively on Windows. But # the s///i modifier isn't portable, so we set CASE_INSENSITIVE_SED # to "i" on Windows and "" on any other platform. define addCFileDeps $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_v_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM $4 -MF $3.bit $(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 >> $3.tmp &&) true endef ifeq "$(Windows)" "YES" CASE_INSENSITIVE_SED = i else CASE_INSENSITIVE_SED = endif