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path: root/findlua.mk
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ifeq ($(strip $(shell which pkg-config > /dev/null || echo NONE)),NONE)
  $(error This makefile requires pkg-config)
endif

ifeq ($(strip $(shell which $(CC) > /dev/null || echo NONE)),NONE)
  $(info Luxio: Hmm, CC make variable contains nonsense.  Overriding to gcc.)
  CC := gcc
endif

# This isn't nice.  Find a nice way.
HOST_OS := $(shell uname -s)

ifneq ($(findstring $(HOST_OS),Linux NetBSD GNU/kFreeBSD),)
  # These operating systems require a seperate Real Time library
  EXTRA_LIBS := -lrt
else
  EXTRA_LIBS :=
endif

NAKED_LUA_VER := $(shell (pkg-config --exists lua && \
                          pkg-config --modversion lua || \
			  pkg-config --variable V lua) | cut -d. -f1-2)

# fine appropriate Lua interpreter
LUA_REPL := $(shell (which lua5.1 > /dev/null 2>&1 && echo lua5.1) || \
                    (which lua-5.1 > /dev/null 2>&1 && echo lua-5.1) || \
                    (which lua51  > /dev/null 2>&1 && echo lua51) || \
                    (lua -e"print(_VERSION)" | grep -q 5.1 && echo lua) || \
                    (which lua-5.2 > /dev/null 2>&1 && echo lua-5.2) || \
                    (which lua52 > /dev/null 2>&1 && echo lua52))

# find appropriate Lua libraries
LUA51_PKG := $(shell (pkg-config --exists lua5.1 && echo lua5.1) || \
                     (pkg-config --exists lua-5.1 && echo lua-5.1) || \
		     (pkg-config --exists lua51 && echo lua51) || \
                     (echo "NONE"))


LUA51_PKG := $(strip $(LUA51_PKG))

ifeq ($(LUA51_PKG),NONE)
  ifeq ($(NAKED_LUA_VER),5.1)
    LUA51_PKG := lua
  endif
endif

ifneq ($(LUA51_PKG),NONE)
  $(info Luxio: Lua 5.1 package name on this system is $(LUA51_PKG))
  LUA51_HAS_MODINST := $(shell test x`pkg-config --variable INSTALL_LMOD $(LUA51_PKG)` != x && echo YES)
  LUA51_INC := $(shell pkg-config --cflags $(LUA51_PKG))
  LUA51_LIB := $(shell pkg-config --libs $(LUA51_PKG))
  ifeq ($(LUA51_HAS_MODINST),)
    LOCAL := YES
  endif
  ifeq ($(LOCAL),)
    LUA51_LMOD_INST := $(shell pkg-config --variable=INSTALL_LMOD $(LUA51_PKG))
    LUA51_CMOD_INST := $(shell pkg-config --variable=INSTALL_CMOD $(LUA51_PKG))
  else
    LUA51_LMOD_INST := /usr/local/share/lua/5.1
    LUA51_CMOD_INST := /usr/local/lib/lua/5.1
  endif
  lua-5.1-try: lua-5.1
  lua-5.1-try-install: lua-5.1-install
else
lua-5.1-try:
	@echo Luxio: Lua 5.1 could not be found, so luxio was not built for it.
lua-5.1-try-install:
	@echo Luxio: Lua 5.1 could not be found, so luxio was not installed for it.
endif

LUA52_PKG := $(shell (pkg-config --exists lua5.2 && echo lua5.2) || \
                     (pkg-config --exists lua-5.2 && echo lua-5.2) || \
                     (pkg-config --exists lua52 && echo lua52) || \
                     (echo "NONE")) 

LUA52_PKG := $(strip $(LUA52_PKG))

ifeq ($(LUA52_PKG),NONE)
  ifeq ($(NAKED_LUA_VER),5.2)
    LUA52_PKG := lua
  endif
endif

ifneq ($(LUA52_PKG),NONE)
  $(info Luxio: Lua 5.2 package name on this system is $(LUA52_PKG))
  LUA52_HAS_MODINST := $(shell test x`pkg-config --variable INSTALL_LMOD $(LUA52_PKG)` != x && echo YES)
  LUA52_INC := $(shell pkg-config --cflags $(LUA52_PKG))
  LUA52_LIB := $(shell pkg-config --libs $(LUA52_PKG))
  ifeq ($(LUA52_HAS_MODINST),)
    LOCAL := YES
  endif
  ifeq ($(LOCAL),)
    LUA52_LMOD_INST := $(shell pkg-config --variable=INSTALL_LMOD $(LUA52_PKG))
    LUA52_CMOD_INST := $(shell pkg-config --variable=INSTALL_CMOD $(LUA52_PKG))
  else
    LUA52_LMOD_INST := /usr/local/share/lua/5.2
    LUA52_CMOD_INST := /usr/local/lib/lua/5.2
  endif
  lua-5.2-try: lua-5.2
  lua-5.2-try-install: lua-5.2-install
else
lua-5.2-try:
	@echo Luxio: Lua 5.2 could not be found, so luxio was not built for it.
lua-5.2-try-install:
	@echo Luxio: Lua 5.2 could not be found, so luxio was not installed for it.
endif