# -----------------------------------------------------------------------------
#
# This file is part of the GHC build system.
#
# To understand how the build system works and how to modify it, see
#      https://gitlab.haskell.org/ghc/ghc/wikis/building/architecture
#      https://gitlab.haskell.org/ghc/ghc/wikis/building/modifying
#
# -----------------------------------------------------------------------------


# Add files generated by alex and happy to a source distribution.
#
# Invoke like this:
#
# $(eval $(call sdist-ghc-file,compiler,stage2,parser,Parser,y))
#
# This adds the file 'compiler/stage2/build/Parser.hs' to the sdist, in the
# same directory as 'compiler/GHC/Parser.y' (which is renamed).

define sdist-ghc-file
# $1 = dir
# $2 = distdir
# $3 = srcdir (can be empty)
# $4 = filename
# $5 = extension

.PHONY: sdist_$1_$2_$4

# We should do this before creating the `sdist-ghc` tarball, or when just
# running `make sdist-ghc-prep`.
sdist-ghc-prep : sdist_$1_$2_$4

# But first create SRC_DIST_GHC_DIR.
sdist_$1_$2_$4 : sdist-ghc-prep-tree

# Generate the .hs files if they don't exist yet, then do actual copying and
# moving.
sdist_$1_$2_$4 : $1/$2/build/$4.hs
	"$(CP)" $1/$2/build/$4.hs $(SRC_DIST_GHC_DIR)/$1/$3/$$(dir $4)
	mv $(SRC_DIST_GHC_DIR)/$1/$3/$4.$5 $(SRC_DIST_GHC_DIR)/$1/$3/$4.$5.source

# And make sure the rules for generating the .hs files exist, even when we
# didn't generate all package-data.mk files.
$$(eval $$(call hs-suffix-rules-srcdir,$1,$2,$3))
endef

# -----------------------------------------------------------------------------
# Variant of sdist-ghc-file whose `$3`-argument is interpreted
# differently in a more appropriate way for cabal-packages

define sdist-ghc-file2
# $1 = dir
# $2 = distdir
# $3 = moduledir
# $4 = filename
# $5 = extension

.PHONY: sdist_$1_$2_$4

# We should do this before creating the `sdist-ghc` tarball, or when just
# running `make sdist-ghc-prep`.
sdist-ghc-prep : sdist_$1_$2_$4

# But first create SRC_DIST_GHC_DIR.
sdist_$1_$2_$4 : sdist-ghc-prep-tree

# Generate the .hs files if they don't exist yet, then do actual copying and
# moving.
sdist_$1_$2_$4 : $1/$2/build/$3/$4.hs
	"$(CP)" $1/$2/build/$3/$4.hs $(SRC_DIST_GHC_DIR)/$1/$3
	mv $(SRC_DIST_GHC_DIR)/$1/$3/$4.$5 $(SRC_DIST_GHC_DIR)/$1/$3/$4.$5.source

# And make sure the rules for generating the .hs files exist, even when we
# didn't generate all package-data.mk files.
$$(eval $$(call hs-suffix-rules-srcdir,$1,$2,$3))
endef