#+TITLE: Emacs config file written in org-mode
#+AUTHOR: Ralph Amissah
#+EMAIL: ralph.amissah@gmail.com
#+STARTUP: indent
#+LANGUAGE: en
#+OPTIONS: H:3 num:nil toc:t \n:nil @:t ::t |:t ^:nil -:t f:t *:t <:t
#+OPTIONS: TeX:t LaTeX:t skip:nil d:nil todo:t pri:nil tags:not-in-toc
#+OPTIONS: author:nil email:nil creator:nil timestamp:nil
#+OPTIONS: ^:nil _:nil#+OPTIONS: ^:nil _:nil
#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+TAGS: Amissah(A) Class(c) WEB(W) noexport(n)

* makefile                                                            :makefile:
** settings [+2]
*** alternative compilers [+1]
**** dmd
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
DMD=dmd
DMD_FLAGS=-de -w
DMD_FLAGS_RELEASE=-release
DMD_FLAG_BINOF=-of

#+end_src
**** ldc2
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
LDC=ldc2
LDC_FLAGS=-w
LDC_FLAGS_RELEASE=-release
LDC_FLAG_BINOF=-of=

#+end_src
**** gdc
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
GDC=gdc
#GDC=gdc-5
GDC_FLAGS=
GDC_FLAGS_RELEASE=-frelease
GDC_FLAG_BINOF=-o

#+end_src
*** set/select: ~compiler~ & ~debug flags~ [+1] [2/2]
Set flags:
- [X] Set D_COMPILER (one of DMD LDC or GDC)
- [X] Set debug flags (using DMD standard flag -debug=)
**** SET compiler: "SET_D_COMPILER=":
Set D_COMPILER one of DMD LDC or GDC e.g.:
  SET_D_COMPILER=DMD
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
# set D_COMPILER one of DMD LDC or GDC:
SET_D_COMPILER=LDC

#+end_src
**** SET debug flags: "SET_DC_FLAGS_DEBUG_EXTRA=-debug=":
Set debug flags using DMD standard flag -debug= e.g.:
  SET_DC_FLAGS_DEBUG_EXTRA=-debug=headings -debug=bookindex
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
SET_DC_FLAGS_DEBUG_EXTRA=-debug=headings -debug=bookindex

#+end_src
*** compiler settings [+1]
**** compiler settings
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
DC=$($(SET_D_COMPILER))
DC_FLAGS=$($(shell echo $(SET_D_COMPILER)_FLAGS))
DC_FLAGS_RELEASE=$($(shell echo $(SET_D_COMPILER)_FLAGS_RELEASE))
DC_FLAG_BINOF=$($(shell echo $(SET_D_COMPILER)_FLAG_BINOF))
DC_FLAGS_DEBUG_DEFAULT_SET=-unittest -debug=checkdoc -debug=summary
DC_FLAGS_DEBUG_SET=\
	$(shell echo $(DC_FLAGS_DEBUG_DEFAULT_SET) $(SET_DC_FLAGS_DEBUG_EXTRA))

#+end_src
**** compiler conditional settings
#+name: makefile
#+BEGIN_SRC makefile                                          :exports none
ifeq ($(DC), $(DMD))
	DC_FLAGS_DEBUG :=$(shell echo $(DC_FLAGS_DEBUG_SET))
endif
ifeq ($(DC) ,$(LDC))
	DC_FLAGS_DEBUG :=$(shell echo $(DC_FLAGS_DEBUG_SET)| sed -e "s/-debug=/-d-debug=/g")
endif
ifeq ($(DC), $(GDC))
	DC_FLAGS_DEBUG :=$(shell echo $(DC_FLAGS_DEBUG_SET)| sed -e "s/-debug/-fdebug/g")
endif

#+end_src
*** program name
#+name: makefile
#+BEGIN_SRC makefile                                           :exports none
PRG_NAME=sdp
PRG_SRC=$(PRG_NAME).d
PRG_SRCDIR=./lib/$(PRG_NAME)
PRG_BIN=$(PRG_NAME)
PRG_BINDIR=bin

#+end_src
*** emacs org settings
#+name: makefile
#+BEGIN_SRC makefile                                           :exports none
# ORG
EMACSLISP=/usr/share/emacs/site-lisp
EMACSLISP_ORG=~/.emacs.d/elpa/org-20151005
EMACSLISP_ORG_CONTRIB=~/.emacs.d/elpa/org-plus-contrib-20151005
ORGFILELIST=$(shell echo `ls -1 maker.org org/*.org`)
ORGFILES=""
ORGDIR=$(shell echo `pwd`)

#+end_src
** make commands [+2]
*** build commands [+1]
**** build rebuild
#+name: makefile
#+BEGIN_SRC makefile                                           :exports none
all: build

build: $(PRG_SRCDIR)/$(PRG_SRC)
	$(DC) $(DC_FLAGS) \
	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)

rebuild: $(PRG_SRCDIR)/$(PRG_SRC) $(PRG_BINDIR)/$(PRG_BIN).o clean build
#+end_src
**** debug
#+name: makefile
#+BEGIN_SRC makefile                                           :exports none

debug: $(PRG_SRCDIR)/$(PRG_SRC)
	$(DC) $(DC_FLAGS) $(DC_FLAGS_DEBUG) \
	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)

debug_dmd: $(PRG_SRCDIR)/$(PRG_SRC)
	$(DMD) $(DMD_FLAGS) $(DMD_FLAGS_DEBUG) \
	$(DMD_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)

debug_ldc: $(PRG_SRCDIR)/$(PRG_SRC)
	$(LDC) $(LDC_FLAGS) $(LDC_FLAGS_DEBUG) \
	$(LDC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)

debug_gdc: $(PRG_SRCDIR)/$(PRG_SRC)
	$(GDC) $(GDC_FLAGS) $(GDC_FLAGS_DEBUG) \
	$(GDC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)
#+end_src
**** release
#+name: makefile
#+BEGIN_SRC makefile                                           :exports none

release: distclean_and_init tangle $(PRG_SRCDIR)/$(PRG_SRC)
	$(DC) $(DC_FLAGS) $(DC_FLAGS_RELEASE) \
	$(DC_FLAG_BINOF)$(PRG_BINDIR)/$(PRG_BIN) \
	$(PRG_SRCDIR)/$(PRG_SRC)

#+end_src
*** init clean distclean etc.
#+name: makefile
#+BEGIN_SRC makefile                                             :exports none
init:
	mkdir -p $(PRG_SRCDIR); \
	mkdir -p $(PRG_BINDIR);

clean: $(PRG_BINDIR)/$(PRG_BIN).o
	rm $(PRG_BINDIR)/$(PRG_NAME).o

expunge: init $(PRG_BINDIR)
	rm -rf $(PRG_BINDIR); \
	rm -rf $(PRG_SRCDIR);

distclean: init $(PRG_BINDIR) expunge

distclean_and_init: init $(PRG_BINDIR) expunge
	mkdir -p $(PRG_SRCDIR); \
	mkdir -p $(PRG_BINDIR);

#+end_src
*** org babel tangle batch process command
#+name: makefile
#+BEGIN_SRC makefile                                             :exports none
tangle:
	for f in $(ORGFILELIST); do \
		ORGFILES="$$ORGFILES \"$$f\""; \
	done; \
	emacs --batch -Q -q \
	--eval "(progn \
		(add-to-list 'load-path \
			(expand-file-name \"$(EMACSLISP)\")) \
		(add-to-list 'load-path \
			(expand-file-name \"$(EMACSLISP_ORG)\" t)) \
		(add-to-list 'load-path \
			(expand-file-name \"$(EMACSLISP_ORG_CONTRIB)\" t)) \
		(require 'org)(require 'ob)(require 'ob-tangle) \
		(mapc (lambda (file) \
			(find-file (expand-file-name file \"$(ORGDIR)\")) \
		    (setq-local org-src-preserve-indentation t) \
			(org-babel-tangle) \
			(kill-buffer)) '($$ORGFILES)))" 2>&1

#+end_src
*** git snapshot
#+name: makefile
#+BEGIN_SRC makefile                                             :exports none
gitsnapshot: distclean_and_init tangle
	git commit -a

#+end_src
** phony
#+name: makefile
#+BEGIN_SRC makefile                                               :exports none
.PHONY : all build rebuild debug release \
	clean distclean init \
	tangle

#+end_src
* sh script to batch process emacs org babel tangle                  :tangle:
  [http://orgmode.org/manual/Batch-execution.html]
#+BEGIN_SRC sh :tangle tangle :tangle-mode (identity #o755) :shebang #!/bin/sh
# -*- mode: shell-script -*-
# tangle files with org-mode
DIR=`pwd`
ORGFILES=""
EMACSLISP=/usr/share/emacs/site-lisp
EMACSLISP_ORG=~/.emacs.d/elpa/org-20151005
EMACSLISP_ORG_CONTRIB=~/.emacs.d/elpa/org-plus-contrib-20151005
# wrap each argument in the code required to call tangle on it
for i in $@; do
 ORGFILES="$ORGFILES \"$i\""
done
emacs --batch -Q -q \
--eval "(progn
(add-to-list 'load-path (expand-file-name \"$EMACSLISP\"))
(add-to-list 'load-path (expand-file-name \"$EMACSLISP_ORG\" t))
(add-to-list 'load-path (expand-file-name \"$EMACSLISP_ORG_CONTRIB\" t))
(require 'org)(require 'ob)(require 'ob-tangle)
(mapc (lambda (file)
  (find-file (expand-file-name file \"$DIR\"))
  (setq-local org-src-preserve-indentation t)
  (org-babel-tangle)
  (kill-buffer)) '($ORGFILES)))" 2>&1 #|grep tangled
#+end_src

* tangle
** makefile:                                                   :makefile:
#+name: tangle_ao_rgx
#+BEGIN_SRC makefile  :tangle makefile     :exports none   :noweb yes
<<makefile>>
#+end_src