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# https://gitlab.haskell.org/ghc/ghc/wikis/building/architecture 9# https://gitlab.haskell.org/ghc/ghc/wikis/building/modifying 10# 11# ----------------------------------------------------------------------------- 12 13define 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 $$(foreach way,$$($1_$2_WAYS),-dep-suffix "$$(patsubst %o,%,$$($$(way)_osuf))") 26$1_$2_MKDEPENDHS_FLAGS += -include-pkg-deps 27$1_$2_MKDEPENDHS_FLAGS += $(addprefix -I,$($1_INCLUDE_DIRS)) 28 29ifneq "$$(NO_GENERATED_MAKEFILE_RULES)" "YES" 30 31# Some of the Haskell files (e.g. utils/hsc2hs/Main.hs) (directly or 32# indirectly) include the generated includes files. 33$$($1_$2_depfile_haskell) : $$(includes_$3_H_CONFIG) $$(includes_$3_H_PLATFORM) 34 35$$($1_$2_depfile_haskell) : $$($1_$2_HS_SRCS) $$($1_$2_HS_BOOT_SRCS) $$$$($1_$2_HC_MK_DEPEND_DEP) | $$$$(dir $$$$@)/. 36 $$(call removeFiles,$$@.tmp) 37ifneq "$$($1_$2_HS_SRCS)" "" 38 "$$($1_$2_HC_MK_DEPEND)" -M \ 39 $$($1_$2_$$(firstword $$($1_$2_WAYS))_MOST_DIR_HC_OPTS) \ 40 $$($1_$2_MKDEPENDHS_FLAGS) \ 41 $$($1_$2_HS_SRCS) 42endif 43 echo "$1_$2_depfile_haskell_EXISTS = YES" >> $$@.tmp 44ifneq "$$($1_$2_SLASH_MODS)" "" 45 for dir in $$(sort $$(foreach mod,$$($1_$2_SLASH_MODS),$1/$2/build/$$(dir $$(mod)))); do \ 46 if test ! -d $$$$dir; then mkdir -p $$$$dir; fi \ 47 done 48endif 49# Some packages are from the bootstrapping compiler, so are not 50# within the build tree. On Windows this causes a problem as they look 51# like bad rules, due to the two colons, so we filter them out. 52 grep -v ' : [a-zA-Z]:/' $$@.tmp > $$@.tmp2 53# Insert the calls to hi-rule. Basically, we look for the 54# Foo.dyn_o Foo.o : Foo.hs 55# lines, and create corresponding hi-rule lines 56# <dollar>(eval <dollar>(call hi-rule,Foo.dyn_hi Foo.hi : %hi: %o Foo.hs)) 57 sed -e '/hs$$$$/ p' -e '/hs$$$$/ s/o /hi /g' \ 58 -e '/hs$$$$/ s/:/ : %hi: %o /' \ 59 -e '/hs$$$$/ s/^/$$$$(eval $$$$(call hi-rule,/' \ 60 -e '/hs$$$$/ s/$$$$/))/' \ 61 -e '/hs-boot$$$$/ p' -e '/hs-boot$$$$/ s/o-boot /hi-boot /g' \ 62 -e '/hs-boot$$$$/ s/:/ : %hi-boot: %o-boot /' \ 63 -e '/hs-boot$$$$/ s/^/$$$$(eval $$$$(call hi-rule,/' \ 64 -e '/hs-boot$$$$/ s/$$$$/))/' \ 65 $$@.tmp2 > $$@ 66# Some of the C files (directly or indirectly) include the generated 67# includes files. 68$$($1_$2_depfile_c_asm) : $$(includes_$3_H_CONFIG) $$(includes_$3_H_PLATFORM) 69 70$$($1_$2_depfile_c_asm) : $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) $$($1_$2_CMM_FILES) | $$$$(dir $$$$@)/. 71 $$(call removeFiles,$$@.tmp) 72ifneq "$$(strip $$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES)) $$($1_$2_CMM_FILES))" "" 73# We ought to actually do this for each way in $$($1_$2_WAYS), but then 74# it takes a long time to make the C deps for the RTS (30 seconds rather 75# than 3), so instead we just pass the list of ways in and let addCFileDeps 76# copy the deps for each way on the assumption that they are the same 77 $$(foreach f,$$($1_$2_C_FILES_DEPS) $$($1_$2_S_FILES) $$($1_$2_CMM_FILES), \ 78 $$(call addCFileDeps,$1,$2,$$($1_$2_depfile_c_asm),$$f,$$($1_$2_WAYS))) 79 $$(call removeFiles,$$@.bit) 80endif 81 echo "$1_$2_depfile_c_asm_EXISTS = YES" >> $$@.tmp 82 mv $$@.tmp $$@ 83 84endif # NO_GENERATED_MAKEFILE_RULES 85 86# Note sed magic above: mkdependC can't do -odir stuff, so we have to 87# munge the dependencies it generates to refer to the correct targets. 88 89$(call profEnd, build-dependencies($1,$2,$3)) 90endef 91 92# This comment is outside the "define addCFileDeps" as that definition 93# is a list of command lines, and if it is inside it then we pass this 94# comment to the shell every time we call the definition. 95# $1 = dir 96# $2 = distdir 97# $3 = depfile 98# $4 = file 99# $5 = ways 100# 101# The formatting of this definition (e.g. the blank line above) is 102# important, in order to get make to generate the right makefile code. 103# 104# 's|\\|/|g' 105# We first normalise all slashes to be forward slashes. Note that 106# $(TOP) also uses forward slashes. 107# 's| /$$| \\|' 108# But now we need to fix the line continuation characters that we 109# just broke. 110# "1s|\.o|\.$($w_osuf)|" 111# We will have dependencies for .o files, so we need to fix them up 112# for the right object suffix for the way we're doing 113# "1s|^|$(dir $4)|" 114# We always get deps for just foo.o when the file we're making is 115# a/b/c/foo.o, so we need to prepend the directory of the source file 116# "1s|$1/|$1/$2/build/|" 117# Well, almost. We actually need to insert e.g. "dist/build" in the 118# middle of that directory 119# "1s|$2/build/$2/build|$2/build|g" 120# But some source files, e.g. sm/Evac_thr.c, are also inside the 121# "dist/build" directory, so now we've just made 122# "dist/build/dist/build", so we need to remove the duplication 123# again 124# "s|$(TOP)/||g$(CASE_INSENSITIVE_SED)" 125# Finally, when making deps for packages like ghc stage2, we have 126# some include paths for packages registered in the in-tree package 127# database. These include paths are full (i.e. not relative) paths, 128# which means that the "cpp -MM" output uses full paths in some cases. 129# This causes 2 problems: 130# * they don't match up with the rules to rebuild the files, where 131# appropriate. 132# * on Windows, make interprets the colon in c:/foo/bar.h as make 133# syntax. 134# So we sed off $(TOP). Unfortunately, on Windows, the case for the 135# drive letter is sometimes different in what $(TOP) starts with, and 136# what the path in the package database starts with. We therefore 137# need to do the substitution case-insensitively on Windows. But 138# the s///i modifier isn't portable, so we set CASE_INSENSITIVE_SED 139# to "i" on Windows and "" on any other platform. 140 141# We use this not only for .c files, but also for .S and .cmm files. 142# As gcc doesn't know what a .cmm file is, it treats it as a linker 143# input and ignores it. We therefore tell gcc that all files are C 144# files with "-x c" so that it actually processes them all. 145 146define addCFileDeps 147 148 $(CPP) $($1_$2_MKDEPENDC_OPTS) $($1_$2_$(firstword $($1_$2_WAYS))_ALL_CC_OPTS) $($(basename $4)_CC_OPTS) -MM -x c $4 -MF $3.bit 149 $(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 >> $3.tmp &&) true 150endef 151 152ifeq "$(Windows_Host)" "YES" 153CASE_INSENSITIVE_SED = i 154else 155CASE_INSENSITIVE_SED = 156endif 157 158