diff options
| author | Ian Lynagh <ian@well-typed.com> | 2013-03-01 16:34:33 +0000 |
|---|---|---|
| committer | Ian Lynagh <ian@well-typed.com> | 2013-03-01 21:02:49 +0000 |
| commit | 104ff6e9ad85751dab2fc2ed25cf8f7827bb13f1 (patch) | |
| tree | 840b8c87b16818837d142b6034145f4b25dba8d4 /rules/foreachLibrary.mk | |
| parent | 458c653a795ea06e7cbd24872e9961711f7044e8 (diff) | |
| download | haskell-104ff6e9ad85751dab2fc2ed25cf8f7827bb13f1.tar.gz | |
Change how the build system handles packages
This makes the build system a little simpler, and in particular
will make it easier to handle the changes needed for cross-compilation.
Diffstat (limited to 'rules/foreachLibrary.mk')
| -rw-r--r-- | rules/foreachLibrary.mk | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/rules/foreachLibrary.mk b/rules/foreachLibrary.mk new file mode 100644 index 0000000000..6bf7673336 --- /dev/null +++ b/rules/foreachLibrary.mk @@ -0,0 +1,43 @@ +# ----------------------------------------------------------------------------- +# +# (c) 2010 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 +# +# ----------------------------------------------------------------------------- + +# For each line in $(TOP)/packages: +# libraries/foo tag ... +# this calls +# $(call $1,foo,tag) +# +# Except! If there's a libraries/foo/ghc-packages then it calls +# $(call $1,foo/bar,tag) +# for each word 'bar' in libraries/foo/ghc-packages. +# + +# We use an FEL_ prefix for the variable names, to avoid trampling on +# other variables, as make has no concept of local variables. + +# We need to handle bin-package-db specially, as it doesn't have an +# entry in the packages file, as it isn't in its own repository. + +define foreachLibrary +# $1 = function to call for each library +# We will give it the package path and the tag as arguments +$$(foreach hashline,libraries/bin-package-db#-#no-remote-repo#no-vcs \ + $$(shell grep '^libraries/' packages | sed 's/ */#/g'),\ + $$(eval FEL_line := $$(subst #,$$(space),$$(hashline))) \ + $$(eval FEL_libdir := $$(word 1,$$(FEL_line))) \ + $$(eval FEL_tag := $$(word 2,$$(FEL_line))) \ + $$(eval FEL_libroot := $$(patsubst libraries/%,%,$$(FEL_libdir))) \ + $$(if $$(wildcard $$(FEL_libdir)/ghc-packages), \ + $$(foreach lib,$$(shell cat $$(FEL_libdir)/ghc-packages), \ + $$(eval $$(call $1,$$(FEL_libroot)/$$(lib),$$(FEL_tag)))), \ + $$(if $$(wildcard $$(FEL_libdir)/), \ + $$(eval $$(call $1,$$(FEL_libroot),$$(FEL_tag)))))) +endef |