# Export all variables by default
export

.PHONY : all dynamic semistatic static install install-dynamic install-static install-header uninstall uninstall-dynamic uninstall-static uninstall-header clean purge help test doc style check


### Versions ###

# Current version of the libowlps
LIBOWLPS_VERSION := 3.0

# OwlPS source version
ifndef OWLPS_VERSION
	OWLPS_VERSION := $(shell git describe 2>/dev/null || echo 'UNKNOWN_VERSION')
endif


### make-related variables ###

# Default make command
# Use MAKE=gmake on BSD systems.
ifndef MAKE
	MAKE := make
endif

# Default Makefile name
ifndef MAKEFILE
	MAKEFILE := Makefile
endif

# Default target to call, when calling a Makefile from another Makefile
ifndef TARGET
	TARGET := all
endif

# Target architecture
# This is unused for now.
ifndef ARCH
	ARCH := native
endif


### Building tools ###

# Misc tools
AR := ar
RANLIB := ranlib
STRIP := strip -s

# Install/uninstall commands
CP := cp
MKDIR := mkdir -p
RM := rm -f
RM_RECURSIVE := \rm -fr
SYMLINK := ln -sf

# C compiler
ifeq "$(origin CC)" "default"
	CLANG := $(shell command -v clang >/dev/null ; echo $$?)
	ifeq "$(CLANG)" "0"
		CC := clang
	else
		COLORGCC := $(shell command -v colorgcc >/dev/null ; echo $$?)
		ifeq "$(COLORGCC)" "0"
			CC := colorgcc
		endif
	endif
endif

# C++ compiler
ifeq "$(origin CXX)" "default"
	COLORGCC := $(shell which colorgcc >/dev/null 2>&1 ; echo $$?)
	ifeq "$(COLORGCC)" "0"
		CXX := colorgcc
	endif
endif


### OwlPS-specific variables ###

LIBOWLPS_DIR = ../libowlps
LIBOWLPSCLIENT_DIR = ../libowlps-client
LIBOWLPSRESULTREADER_DIR = ../libowlps-resultreader


### Build flags ###

# Reinitialisation
CPPFLAGS :=
CFLAGS :=
CXXFLAGS :=
LDFLAGS :=

## OpenWrt specifics ##
#
# To compile for OpenWrt, the OPENWRT_VERSION variable must be set.
# The other relevant variables are:
#   OPENWRT_ROOT: path to the base directory in which the OpenWrt stuff
#     is (default: $HOME/openwrt).
#   OPENWRT_TARGET: name of the OpenWrt target to build for (default:
#     atheros).
#
# To allow building against several targets and OpenWrt versions, we
# look for the toolchain in the following base directory, taking into
# account specificities of each version when needed:
#   $OPENWRT_ROOT/$OPENWRT_TARGET/$OPENWRT_VERSION
#
# For maintainability's sake, we don't handle changes of version of the
# toolchain's tools, so you have to create symbolic links under this
# directory:
#   target_uClibc --> staging_dir/target-$ARCH_*_uClibc-*
#   toolchain_gcc_uClibc --> staging_dir/toolchain-$ARCH_*_gcc-*_uClibc-*
#
# See the documentation in INSTALL.t2t for further information on how to
# set up a building environment for OpenWrt.
#
ifndef OPENWRT_PATH
	OPENWRT_ROOT = $${HOME}/openwrt
endif
ifndef OPENWRT_TARGET
	OPENWRT_TARGET := atheros
endif
ifdef OPENWRT_VERSION
	TOOLCHAIN_PREFIX := $(OPENWRT_ROOT)/$(OPENWRT_TARGET)/$(OPENWRT_VERSION)
	STAGING_DIR := $(TOOLCHAIN_PREFIX)/staging_dir
	TOOLCHAIN1 := $(TOOLCHAIN_PREFIX)/toolchain_gcc_uClibc
	TOOLCHAIN_BIN := $(TOOLCHAIN1)/bin
	TOOLCHAIN2 := $(TOOLCHAIN_PREFIX)/target_uClibc

	ifeq "$(OPENWRT_VERSION)" "10.03"
		TOOLCHAIN_BIN := $(TOOLCHAIN1)/usr/bin
	endif

	CFLAGS += -I$(TOOLCHAIN1)/usr/include -I$(TOOLCHAIN2)/usr/include
	LDFLAGS += -L$(TOOLCHAIN1)/lib -L$(TOOLCHAIN1)/usr/lib -L$(TOOLCHAIN2)/usr/lib
	DYNAMIC_LDFLAGS += $(TOOLCHAIN1)/lib/ld-uClibc.so.0
	SEMISTATIC_LDFLAGS += $(TOOLCHAIN1)/lib/ld-uClibc.so.0

	CC := STAGING_DIR=$(STAGING_DIR) $(TOOLCHAIN_BIN)/mips-openwrt-linux-gcc
	CXX := STAGING_DIR=$(STAGING_DIR) $(TOOLCHAIN_BIN)/mips-openwrt-linux-g++
	STRIP := STAGING_DIR=$(STAGING_DIR) $(TOOLCHAIN_BIN)/mips-openwrt-linux-strip -s
endif

# OwlPS flags
CFLAGS += -D OWLPS_VERSION=\"$(OWLPS_VERSION)\"
LDFLAGS += -L$(LIBOWLPS_DIR) -L$(LIBOWLPSCLIENT_DIR) -L$(LIBOWLPSRESULTREADER_DIR)
CFLAGS += -I$(LIBOWLPS_DIR) -I$(LIBOWLPSCLIENT_DIR) -I$(LIBOWLPSRESULTREADER_DIR)

# Options
CFLAGS += -O2
CFLAGS += -fPIC
CFLAGS += -Wall -Wextra

# Debug flags
CFLAGS += -D DEBUG
#CFLAGS += -g -O0
#CFLAGS += -D NDEBUG

# Misc
#STRIPFLAGS += -Wl,-s

# OS specific flags
OS := $(shell uname)
ifeq "$(OS)" "DragonFly"
	CFLAGS += -I/usr/pkg/include
	LDFLAGS += -L/usr/pkg/lib
endif
ifeq "$(OS)" "NetBSD"
	CFLAGS += -I/usr/pkg/include
	LDFLAGS += -L/usr/pkg/lib
endif
ifeq "$(OS)" "OpenBSD"
	CFLAGS += -I/usr/local/include
	LDFLAGS += -L/usr/local/lib
endif

# C++ specific flags
CXXFLAGS := $(CFLAGS)

# C specific flags
CFLAGS += -Wstrict-prototypes


### Installation directories ###

PREFIX := /usr/local
INSTALL_DIR := $(PREFIX)/bin
INSTALL_LIB := $(PREFIX)/lib
INSTALL_INC := $(PREFIX)/include
INSTALL_MAN := $(PREFIX)/share/man