finish splitting modules, and start using ninja

configure

@@ -0,0 +1,129 @@
+#!/bin/bash
+args="$@"  # backup for ninja regen
+
+OCAMLC=ocamlc
+OCAMLDEP=ocamldep
+OCAMLC_ARGS=
+OCAMLDEP_ARGS=-bytecode
+OBJEXT=cmo
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    *=*)
+      eval "$1"
+      shift 1
+      ;;
+
+    --help|-help|-h|--h)
+      echo "Usage: ./configure [options] key=value ..."
+      echo ""
+      echo "Options:"
+      echo "  --help"
+      echo ""
+      echo "Varaibles:"
+      echo "  OBJEXT        = $OBJEXT"
+      echo "  OCAMLC        = $OCAMLC"
+      echo "  OCAMLDEP      = $OCAMLDEP"
+      echo "  OCAMLC_ARGS   = $OCAMLC_ARGS"
+      echo "  OCAMLDEP_ARGS = $OCAMLDEP_ARGS"
+      exit 0
+      ;;
+
+    *)
+      echo "Unexpected argument: $1"
+      exit 1
+      ;;
+  esac
+done
+
+mkdir -p build
+
+echo '# generated from ../configure
+OCAMLDEP=$1
+shift
+echo ninja_dyndep_version = 1
+$OCAMLDEP -one-line $@ | while read d; do
+  outs="$(echo "$d" | cut -d":" -f1)"
+  ins="$(echo "$d" | cut -d":" -f2)"
+  echo -ne "build build/$outs : dyndep |"
+  for f in $ins; do
+    echo -ne " build/$f"
+  done
+  echo
+done
+' > build/deps.sh
+
+if ! [ -f project ]; then
+  touch project
+  echo "# ocaml project description" >> project
+  echo "# (this is a bash script)" >> project
+  echo "#" >> project
+  echo "# functions:" >> project
+  echo "#   application [name]" >> project
+  echo "#     create module from \$name.ml" >> project
+  echo "#" >> project
+  echo "#   module [name]" >> project
+  echo "#     create module from \$name.ml and \$name.mli" >> project
+  echo "#" >> project
+  echo "#   include [path]" >> project
+  echo "#     include other config path." >> project
+  echo "#     prefer this over regular 'source', because this also adds" >> project
+  echo "#     a dependency to the ninja build file" >> project
+  echo ""
+  echo "# put in project configuration here" >> project
+fi
+
+project_files=""
+module() {
+  true
+}
+application() {
+  true
+}
+include() {
+  project_files+=" $1"
+  source "$1"
+}
+include "project"
+
+rm -f build.ninja
+touch build.ninja
+
+echo "rule regen" >> build.ninja
+echo "  command = ./configure $args" >> build.ninja
+echo "  generator = 1" >> build.ninja
+echo "build build.ninja | build/deps.sh: regen | configure $project_files" >> build.ninja
+echo "" >> build.ninja
+echo "rule ocamlc" >> build.ninja
+echo "  command = $OCAMLC $OCAMLC_ARGS -nocwd -I build -c \$in -o \$out" >> build.ninja
+echo "" >> build.ninja
+echo "rule ocamldep" >> build.ninja
+echo "  command = sh build/deps.sh $OCAMLDEP $OCAMLDEP_ARGS \$in > \$out" >> build.ninja
+
+module() {
+  echo "" >> build.ninja
+  echo "build build/$1.dd : ocamldep $1.ml $1.mli || build/deps.sh" >> build.ninja
+  echo "build build/$1.cmi : ocamlc $1.mli || build/$1.dd" >> build.ninja
+  echo "  dyndep = build/$1.dd" >> build.ninja
+  echo "build build/$1.$OBJEXT : ocamlc $1.ml | build/$1.cmi || build/$1.dd " >> build.ninja
+  echo "  dyndep = build/$1.dd" >> build.ninja
+}
+
+application() {
+  echo > /dev/null
+  # TODO
+}
+
+include() {
+  project_files+=" $1"
+  source "$1"
+}
+
+for f in $project_files; do
+  source "$f"
+done
+
+
+echo Configuration Done!
+echo Run \"ninja\" to start build
+