MINOR: Add a proper Makefile to build project.

Inspired from mod_virtualvalue

Also, don't make reference to any version in code or elsewhere, this now
come from git describe and CFLAGS definition

Build the project (one of) :
 $ make
 $ make shared
 $ make all
  CC     mod_ruid2.o
  CC     mod_ruid2.so

Build with verbose output :
 $ make V=1
cc -c -DMODULE_NAME='"mod_ruid2"' -DMODULE_VERSION='"v0.9.8-6-g20ec6cc-dev"' -fPIC -I/usr/include/apache2 -D_REENTRANT -D_GNU_SOURCE -pthread -I/usr/include/apr-1   -W -Wall -o mod_ruid2.o mod_ruid2.c
ld -shared -o mod_ruid2.so mod_ruid2.o  -lapr-1 -luuid -lrt -lcrypt -lpthread -ldl  -lcap

Build with specific CFLAGS and CC :
 $ make CC=i586-pc-linux-gnu-gcc CFLAGS='-march=geode -Os -mmmx -m3dnow -I/data/cross/alix3-i586/firmware/usr/include'

In this case default one (-fPIC is alway applied).

Strip library :
 $ make strip
  STRIP  mod_ruid2.so

Build a tar for public release :
 $ make dist
  TAR    mod_ruid2-v0.9.8-6-g20ec6cc-dev.tar
  XZ     mod_ruid2-v0.9.8-6-g20ec6cc-dev.txz

3 files changed, 144 insertions, 11 deletions

diff --git a/.gitignore b/.gitignore
index 6e04ee5..9257bbc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,10 @@
-.libs/
-*.la
-*.lo
+# Compilation results
 *.o
-*.slo
+*.so
+
+# Dist results
+*.tar
+*.txz
+
+# Hacking results
+*.patch
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..98413a6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,134 @@
+#!/usr/bin/make -f <
+#
+# Copyright (C) 2013 Bertrand Jacquin <beber@meleeweb.net>
+
+NAME	= mod_ruid2
+VERSION = $(shell git describe --tags --dirty=-dev 2> /dev/null)
+
+SRC	= \
+	mod_ruid2.c
+
+DOC_FILES	= \
+	README \
+	ruid2.conf
+
+EXTRA_FILES	= \
+	LICENSE \
+	Makefile
+
+PKG_CONFIG	?= pkg-config
+
+APR_CFLAGS	= \
+	$(shell $(PKG_CONFIG) --cflags apr-1)
+
+APR_LDFLAGS	= \
+	$(shell $(PKG_CONFIG) --libs apr-1)
+
+HTTPD_CFLAGS	= \
+	-I/usr/include/apache2
+
+CAP_LDFLAGS	= \
+	-lcap
+
+CFLAGS	?= \
+	-W -Wall
+
+SPEC_CFLAGS	= \
+	-DMODULE_NAME='"$(NAME)"'	\
+	-DMODULE_VERSION='"$(VERSION)"'	\
+	-fPIC \
+	$(HTTPD_CFLAGS) \
+	$(APR_CFLAGS) \
+	$(CAP_CFLAGS)
+
+SPEC_LDFLAGS	= \
+	$(HTTPD_LDFLAGS) \
+	$(APR_LDFLAGS) \
+	$(CAP_LDFLAGS)
+
+ifdef DEBUG
+SPEC_CFLAGS +=\
+	-DDEBUG \
+	-g -ggdb
+endif # DEBUG
+
+CC	?= cc
+
+STRIP	?= strip
+STRIP_FLAGS	?= --strip-unneeded -R .comment -R .GCC.command.line -R .note.gnu.build-id
+
+INSTALL	?= install
+
+RM	?= rm -f
+
+TAR	= tar
+XZ	= xz
+
+DESTDIR	?=
+PREFIX	?= /usr/local
+MODDIR	?= $(PREFIX)/lib/apache2/modules
+DOCDIR	?= $(PREFIX)/share/doc/$(NAME)
+
+ifeq ($(V),)
+ Q		= @
+
+ quiet_cmd	= @printf "  %-6s %s\n" "$(1)" "$(2)";
+endif	# $(V)
+
+all:	shared
+
+shared:	$(NAME).so
+dist:	$(NAME)-$(VERSION).txz
+
+# Build rules
+%.o:	%.c
+	$(call quiet_cmd,CC,$@)
+	$(Q)$(CC) -c $(SPEC_CFLAGS) $(CFLAGS) -o $@ $<
+
+$(NAME).so:	$(SRC:c=o)
+	$(call quiet_cmd,CC,$@)
+	$(Q)$(CC) -shared -o $@ $^ $(SPEC_LDFLAGS) $(LDFLAGS)
+
+strip:	$(NAME).so
+	$(call quiet_cmd,STRIP,$<)
+	$(Q)$(STRIP) $(STRIP_FLAGS) $<
+
+# Archiving rules
+$(NAME)-$(VERSION).tar:	$(SRC) $(EXTRA_FILES) $(DOC_FILES)
+	$(call quiet_cmd,TAR,$@)
+	$(Q)$(TAR) cf $@ \
+		--transform "s,^,$(NAME)-$(VERSION)/," \
+		--force-local --numeric-owner \
+		$^
+
+%.txz: 	%.tar
+	$(call quiet_cmd,XZ,$@)
+	$(Q)$(XZ) -c > $@ < $<
+
+# Install rules
+install:	\
+	$(DESTDIR)$(MODDIR)/$(NAME).so \
+	$(addprefix $(DESTDIR)$(DOCDIR)/,$(DOC_FILES))
+
+$(DESTDIR)$(MODDIR)/$(NAME).so:	$(NAME).so
+	$(call quiet_cmd,INSTALL,$@)
+	$(Q)$(INSTALL) -D -m 444 $< $@
+
+$(DESTDIR)$(DOCDIR)/%:	%
+	$(call quiet_cmd,INSTALL,$@)
+	$(Q)$(INSTALL) -D -m 444 $< $@
+
+# Cleanup rules
+clean:
+	$(call quiet_cmd,RM,$(SRC:c=o))
+	$(Q)$(RM) $(SRC:c=o)
+	$(call quiet_cmd,RM,$(NAME).so)
+	$(Q)$(RM) $(NAME).so
+
+distclean: clean
+	$(call quiet_cmd,RM,$(NAME)-$(VERSION).tar)
+	$(Q)$(RM) $(NAME)-$(VERSION).tar
+	$(call quiet_cmd,RM,$(NAME)-$(VERSION).txz)
+	$(Q)$(RM) $(NAME)-$(VERSION).txz
+
+.PHONY:	strip
diff --git a/mod_ruid2.c b/mod_ruid2.c
index 30d81b2..96f7bcb 100644
--- a/mod_ruid2.c
+++ b/mod_ruid2.c
@@ -1,5 +1,5 @@
 /*
-   mod_ruid2 0.9.8
+   mod_ruid2
    Copyright (C) 2009-2013 Monshouwer Internet Diensten
 
    Author: Kees Monshouwer
@@ -22,9 +22,6 @@
    - mod_ruid - http://websupport.sk/~stanojr/projects/mod_ruid/
      Copyright 2004 by Pavel Stano. All rights reserved
 
-   Instalation:
-   - /usr/apache/bin/apxs -a -i -l cap -c mod_ruid2.c
-
    Issues:
    - https://github.com/mind04/mod-ruid2/issues
 */
@@ -50,9 +47,6 @@
 #include <sys/prctl.h>
 #include <sys/capability.h>
 
-#define MODULE_NAME		"mod_ruid2"
-#define MODULE_VERSION		"0.9.8"
-
 #define RUID_MIN_UID		100
 #define RUID_MIN_GID		100