build: autotools conversion

1) This removes former Makefiles and install-sh (which is now
   automagically imported via autoreconf).

 Makefile.defs.in
 Makefile.in
 Makefile.rules.in
 src/Makefile.in
 install-sh (now automagically imported via autoreconf).

2) CFLAGS are left almost same, they are integrated into Make_global.am.
   Use AM_CPPFLAGS to set the CFLAGS set by pkgconfig.

3) Add m4 directory to the tree which only contains the .gitignore
   file. Update .gitignore file to skip autogenerated files.

4) include <config.h> whenever required.

5) Minor adjustments to scanner.l and parser_bison.y to compile cleanly
   with autotools.

6) Add %option outfile=lex.yy.c to scanner.l, otherwise I hit this error
   here:

        gcc -DHAVE_CONFIG_H -I. -I..  -I../include -DDEFAULT_INCLUDE_PATH="\"/usr/etc\""  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement -Wsign-compare -Winit-self -Wformat-nonliteral -Wformat-security -Wmissing-format-attribute -Wcast-align -Wundef -Wbad-function-cast -g -O2 -MT mnl.o -MD -MP -MF $depbase.Tpo -c -o mnl.o mnl.c &&\
        mv -f $depbase.Tpo $depbase.Po
/bin/sh ../build-aux/ylwrap scanner.l lex.yy.c scanner.c -- flex
make[3]: *** [scanner.c] Error 1
make[3]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/pablo/devel/scm/git-netfilter/nftables'
make: *** [all] Error 2

7) Add Makefile.am for include/ (contributed by Giorgio Dal Molin).

The doc/ and files/ conversion to automake will come in follow up
patches but 'make distcheck' already works.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

6 files changed, 54 insertions, 34 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 00000000..0a678102
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,51 @@
+sbin_PROGRAMS = nft
+
+CLEANFILES = scanner.c parser_bison.c
+
+AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CPPFLAGS += -DDEFAULT_INCLUDE_PATH="\"${sysconfdir}\""
+		${LIBMNL_CFLAGS} ${LIBNFTNL_CFLAGS}
+
+AM_CFLAGS = -Wall								\
+	    -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations	\
+	    -Wdeclaration-after-statement -Wsign-compare -Winit-self		\
+	    -Wformat-nonliteral -Wformat-security -Wmissing-format-attribute	\
+	    -Wcast-align -Wundef -Wbad-function-cast
+	    -Waggregate-return -Wunused -Wwrite-strings
+
+
+AM_YFLAGS = -d
+
+# yacc and lex generate dirty code
+parser_bison.o scanner.o: AM_CFLAGS += -Wno-missing-prototypes -Wno-missing-declarations -Wno-implicit-function-declaration -Wno-nested-externs -Wno-undef -Wno-redundant-decls
+
+BUILT_SOURCES = parser_bison.h
+
+nft_SOURCES =	main.c				\
+		rule.c				\
+		statement.c			\
+		datatype.c			\
+		expression.c			\
+		evaluate.c			\
+		proto.c				\
+		payload.c			\
+		exthdr.c			\
+		meta.c				\
+		ct.c				\
+		netlink.c			\
+		netlink_linearize.c		\
+		netlink_delinearize.c		\
+		segtree.c			\
+		rbtree.c			\
+		gmputil.c			\
+		utils.c				\
+		erec.c				\
+		mnl.c				\
+		scanner.l			\
+		parser_bison.y
+
+if BUILD_CLI
+nft_SOURCES +=	cli.c
+endif
+
+nft_LDADD	= ${LIBMNL_LIBS} ${LIBNFTNL_LIBS}
diff --git a/src/Makefile.in b/src/Makefile.in
deleted file mode 100644
index 0c080f6b..00000000
--- a/src/Makefile.in
+++ /dev/null
@@ -1,33 +0,0 @@
-PROGRAMS		+= nft
-
-nft-destdir		:= @sbindir@
-
-nft-obj			+= main.o
-ifeq (@with_cli@,yes)
-nft-obj			+= cli.o
-endif
-nft-obj			+= rule.o
-nft-obj			+= statement.o
-nft-obj			+= datatype.o
-nft-obj			+= expression.o
-nft-obj			+= evaluate.o
-nft-obj			+= proto.o
-nft-obj			+= payload.o
-nft-obj			+= exthdr.o
-nft-obj			+= meta.o
-nft-obj			+= ct.o
-nft-obj			+= netlink.o
-nft-obj			+= netlink_linearize.o
-nft-obj			+= netlink_delinearize.o
-nft-obj			+= segtree.o
-nft-obj			+= rbtree.o
-nft-obj			+= gmputil.o
-nft-obj			+= utils.o
-nft-obj			+= erec.o
-nft-obj			+= mnl.o
-
-nft-obj			+= parser_bison.o
-nft-extra-clean-files	+= parser_bison.c parser_bison.h
-
-nft-obj			+= scanner.o
-nft-extra-clean-files	+= scanner.c scanner.h
diff --git a/src/cli.c b/src/cli.c
index 6f2847b8..f3827b81 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -12,6 +12,7 @@
  * Development of this code funded by Astaro AG (http://www.astaro.com/)
  */
 
+#include <config.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
diff --git a/src/erec.c b/src/erec.c
index 4930085f..82543e6d 100644
--- a/src/erec.c
+++ b/src/erec.c
@@ -8,6 +8,7 @@
  * Development of this code funded by Astaro AG (http://www.astaro.com/)
  */
 
+#include <config.h>
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
diff --git a/src/parser_bison.y b/src/parser_bison.y
index 85a1fb46..6eb0475e 100644
--- a/src/parser_bison.y
+++ b/src/parser_bison.y
@@ -33,7 +33,6 @@
 #include <erec.h>
 
 #include "parser_bison.h"
-#include "scanner.h"
 
 void parser_init(struct parser_state *state, struct list_head *msgs)
 {
diff --git a/src/scanner.l b/src/scanner.l
index 157c1e98..f0ed8d4e 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -169,6 +169,7 @@ ip6addr		({v680}|{v67}|{v66}|{v65}|{v64}|{v63}|{v62}|{v61}|{v60})
 addrstring	({macaddr}|{ip4addr}|{ip6addr})
 
 %option prefix="nft_"
+%option outfile="lex.yy.c"
 %option reentrant
 %option noyywrap
 %option nounput