Makefile

#!/bin/bash

# Adjust to your needs.
# should work with Lua versions 5.1, 5.2, 5.3.
# lua5.1 is ABI-Compatible with luajit.
PREFIX ?= /usr/local
LUA_INCDIR ?= /usr/include/lua5.1
LUA_LIBS ?= -llua5.1

CFLAGS ?= -O3 -Wall -Wextra -Wpedantic -I${LUA_INCDIR}
STRIP_FLAGS=

# Target directories for 'make install':
# Adjust to your needs.

# Installation path for the Lua modules. Will be installed to a subdirectory $INSTALL_LIBNAME in this directory.
# To list the default package.path for your Lua installation, you could use: lua -e "print((package.path:gsub(';', '\n')))"
INSTALL_PATH = $(PREFIX)/share/lua/5.1

# Installation path for the C module. A single .so file named getch.so will be installed here
# To list the default package.cpath for your Lua installation, you could use: lua -e "print((package.cpath:gsub(';', '\n')))"
INSTALL_CPATH = $(PREFIX)/lib/lua/5.1

# name for the lua module(used in require() to load Lua module that loads the C module)
# Usually no need to touch this(breaks compabillity when loading)
INSTALL_LUALIBNAME = lua-getch

# filename for the compiled getch.so in the cpath. Changing this also requires changing the require("getch") accordingly.
# Usually no need to touch this(breaks internal Lua code compabillity)
INSTALL_CLIBNAME = getch




# Platform specific flags
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Linux)
	CFLAGS += -fPIC -shared
endif
ifeq ($(UNAME_S),Darwin)
	CFLAGS += -bundle -undefined dynamic_lookup -all_load
	STRIP_FLAGS += -x
endif

getch.so: getch.c
	$(CC) -o $@ $(CFLAGS) $(LUA_LIBS) $<
	strip ${STRIP_FLAGS} $@

.PHONY: all
all: getch.so

.PHONY: install
install: getch.so
	mkdir -vp $(INSTALL_PATH)/$(INSTALL_LUALIBNAME)
	mkdir -vp $(INSTALL_CPATH)/
	# copy C library part to lua cpath
	cp -v getch.so $(INSTALL_CPATH)/$(INSTALL_CLIBNAME).so
	# copy Lua library part to lua path
	cp -v lua/* $(INSTALL_PATH)/$(INSTALL_LUALIBNAME)/

.PHONY: install_symlinks
install_symlinks: getch.so
	mkdir -vp $(INSTALL_PATH)/
	mkdir -vp $(INSTALL_CPATH)/
	# install symlink for C library part to lua cpath
	ln -vs $(CURDIR)/getch.so $(INSTALL_CPATH)/$(INSTALL_CLIBNAME).so
	# install symlink for Lua library part to lua path
	ln -vs $(CURDIR)/lua $(INSTALL_PATH)/$(INSTALL_LUALIBNAME)

.PHONY: clean
clean:
	rm -f getch.so