Implement autotools build scripts

Makefile

@@ -1,54 +0,0 @@
-CC			:= $(CROSS_COMPILE)gcc
-LD			:= $(CROSS_COMPILE)gcc
-STRIP		:= $(CROSS_COMPILE)strip
-
-# -Wno-multichar is used for vban.h:25 define.
-CFLAGS    	:= -DLINUX -ansi -Wpedantic -Wall -Wno-multichar
-LDFLAGS		:= -lasound
-
-# Defaultly compiles release version of the application
-CONFIG		:= release
-
-ifneq ($(filter release%,$(CONFIG)),)
-  LDFLAGS   += -O3
-endif
-
-ifneq ($(filter debug%,$(CONFIG)),)
-  CFLAGS	+= -g
-endif
-
-SOURCES		:= 	main.c 		\
-				socket.c 	\
-				audio.c		\
-
-OBJECTS		:= $(SOURCES:.c=.o)
-DEPENDENCIES:= $(SOURCES:.c=.d)
-EXECUTABLE	:= vban_receptor
-
-all: $(EXECUTABLE)
-
-$(EXECUTABLE): $(OBJECTS) 
-	@echo "Linking $@"
-	@$(LD) $(LDFLAGS) -o "$@" $^
-ifneq ($(filter release%,$(CONFIG)),)
-	@echo "Stripping $@"
-	@$(STRIP) "$@"
-endif
-
-%.o:%.c
-	@echo "Compiling $<"
-	@$(CC) -c $(CFLAGS) -MMD -MF "$(patsubst %.o,%.d,$@)" -o "$@" "$<"
-
--include $(DEPENDENCIES)
-
-install:
-	@mkdir -p $(DESTDIR)/usr/sbin
-	@cp $(EXECUTABLE) $(DESTDIR)/usr/sbin
-
-clean:
-	@echo "Cleaning artifacts and objects"
-	@rm -f $(OBJECTS) $(DEPENDENCIES) $(EXECUTABLE)
-	@rm -f *~*
-
-distclean: clean
-

Makefile.am

@@ -0,0 +1,5 @@
+# We want to avoid GNU potential warnings
+AUTOMAKE_OPTIONS = foreign
+# We want to compile source in src, so let's go there
+SUBDIRS = src
+

README.md

@@ -10,10 +10,15 @@ VBAN is a simple audio over UDP protocol proposed by VB-Audio, see [VBAN Audio w
 Compilation and installation
 ----------------------------
 
-vban_receptor doesn't have a configure script. Nevertheless the makefile is very simple and has some basic variables (CC, LD, STRIP, CROSS_COMPILE, DESTDIR) to define whatever compilation toolchain you wish to use and where you want to install. This will probably evolve in future releases.
-So simply use:
+vban_receptor uses ALSA, therefore you need to have ALSA library and headers available on your platform.
+In standard Linux distributions, ALSA library package is usually named libasound(X) and header files come in package named libasound(X)-dev.
 
-    $ make
+vban_receptor is distributed with autotools build scripts, therefore, to build, you need to invoke:
+    $ ./autogen.sh              # probably only once for ever
+    $ ./configure               # with or without options
+    $ make                      # with or without options
+
+To install, simply invoke:
     # make install
 
 Usage

autogen.sh

@@ -0,0 +1,6 @@
+#! /bin/sh
+
+aclocal \
+&& automake --add-missing \
+&& autoconf
+

configure.ac

@@ -0,0 +1,28 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.69])
+AC_INIT([vban_receptor], [v0.5], [quiniouben@yahoo.fr])
+AM_INIT_AUTOMAKE
+
+# Checks for programs.
+AC_PROG_CC
+AC_LANG(C)
+
+# Checks for libraries.
+AC_CHECK_HEADERS([alsa/asoundlib.h], [], [AC_MSG_ERROR(Missing ALSA headers)])
+AC_CHECK_LIB([asound], [snd_pcm_open], [], [AC_MSG_ERROR(Missing ALSA library)])
+
+# Checks for header files.
+AC_CHECK_HEADERS([arpa/inet.h inttypes.h netinet/in.h stddef.h stdlib.h string.h sys/socket.h unistd.h], [], [AC_MSG_ERROR(Missing some system headers)])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_SIZE_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT8_T
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_CHECK_FUNCS([inet_ntoa memset socket strerror], [], [AC_MSG_ERROR(Missing some system functions)])
+
+AC_OUTPUT(Makefile src/Makefile)

src/Makefile.am

@@ -0,0 +1,6 @@
+# Let's define some things here
+AM_CFLAGS = -ansi -Wpedantic -Wall -Wno-multichar -O2
+AM_LDFLAGS = -lasound
+
+bin_PROGRAMS = vban_receptor
+vban_receptor_SOURCES = main.c audio.h audio.c socket.h socket.c vban.h