diff options
| -rw-r--r-- | automake.head.mk | 11 | ||||
| -rw-r--r-- | automake.txt | 40 |
2 files changed, 27 insertions, 24 deletions
diff --git a/automake.head.mk b/automake.head.mk index c79da83..37d3b07 100644 --- a/automake.head.mk +++ b/automake.head.mk @@ -30,13 +30,10 @@ am_path = $(foreach p,$1,$(call _am_relto,$p)) all: build .PHONY: all -## Set topoutdir, outdir, and srcdir (assumes that topsrcdir is -## already set, and that $(topoutdir)/config.mk has been included) -ifeq ($(topoutdir),) -topoutdir := $(call _am_path,$(dir $(lastword $(filter %/config.mk config.mk,$(MAKEFILE_LIST))))) -endif - outdir := $(call _am_path,$(dir $(lastword $(filter-out %.mk,$(MAKEFILE_LIST))))) - srcdir := $(call _am_path,$(topsrcdir)/$(call _am_relto,$(topoutdir),$(outdir))) +## Set outdir and srcdir (assumes that topoutdir and topsrcdir are +## already set) +outdir := $(call _am_path,$(dir $(lastword $(filter-out %.mk,$(MAKEFILE_LIST))))) +srcdir := $(call _am_path,$(topsrcdir)/$(call _am_relto,$(topoutdir),$(outdir))) _am_included_makefiles := $(_am_included_makefiles) $(call _am_path,$(outdir)/Makefile) diff --git a/automake.txt b/automake.txt index c9834d3..935af5f 100644 --- a/automake.txt +++ b/automake.txt @@ -41,25 +41,14 @@ What you have to do is: In each source directory, you write a `Makefile`, very similarly to if you were writing for plain GNU Make, with - # adjust the number of `../` segments as appropriate - include $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk + topoutdir ?= ... + topsrcdir ?= ... include $(topsrcdir)/automake.head.mk # your makefile include $(topsrcdir)/automake.tail.mk -And in the top-level output directory, you write a `config.mk` with: - - ifeq ($(topsrcdir),) - # have your ./configure script adjust topsrcdir if doing an - # out-of-tree build - topsrcdir := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST)))) - - # your configuration - - endif - And in the top-level source directory, Write your own helper makefiles that get included: - `common.once.head.mk`: before parsing any of your Makefiles @@ -145,10 +134,27 @@ between directories: Tips, notes ----------- -If you have a `./configure` script, don't have it modify the -`Makefile`s; have everything you need modified be in -`$(topoutdir)/config.mk` and have it generate that; then have it copy -(or (sym?)link?) every `$(srcdir)/Makefile` into `$(outdir)/Makefile`. +I like to have the first (non-comment) line in a Makefile be: + + include $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk + +(adjusting the number of `../` sequences as nescessary). Then, my +(user-editable) `config.mk` is of the form: + + ifeq ($(topsrcdir),) + topoutdir := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST)))) + topsrcdir := $(topoutdir) + + # your configuration + + endif + +If the package has a `./configure` script, then I have it modifiy +topsrcdir as necessary, as well as modifying whatever other parts of +the configuration. All of the configuration lives in `config.mk`; +`./configure` doesn't modify any `Makefile`s, it just generates +`config.mk`, and copies (or (sym?)link?) every `$(srcdir)/Makefile` to +`$(outdir)/Makefile`. ---- Copyright (C) 2016 Luke Shumaker |