# == Variables for inter-project-communication

# -- What do I know about myself?
VERSION_FILE          := $(firstword $(wildcard VERSION) $(TOPDIR)/VERSION)
ifndef DEVELOPMENT
  ifeq ($(wildcard $(VERSION_FILE)),)
    DEVELOPMENT       := true
  else
    DEVELOPMENT       := $(shell grep -q 'dev' $(VERSION_FILE) && echo true)
  endif
endif

# -- Conclude the build system's location:
PROJECTS_DIR          ?= $(TOPDIR)/..
ifeq ($(DEVELOPMENT),true)
  PRJS_DIR            ?= $(PROJECTS_DIR)
else
  PRJS_DIR            ?= /opt
endif
MOD_SCRIPT_DIR        := $(firstword $(wildcard $(MODDIR)/scripts $(MODDIR)/bin))

# -- Query the build system about other projects:
PYTHON                ?= /usr/bin/python2
ifneq ($(TOPDIR),)
  proj_query_cmd       = $(PYTHON) $(MOD_SCRIPT_DIR)/projects.py -p $(PRJS_DIR) -t $(TOPDIR) $(PROJECTS_PY_EXTRA_ARGS)
  proj_query           = $(shell $(proj_query_cmd) $(1))
  proj_dir             = $(call proj_query,proj-dir $(1))
  htdocs_dir           = $(call proj_query,htdocs-dir $(1))
endif