Add i3-msg, a sample implementation and hopefully useful utility

Makefile

@@ -1,72 +1,6 @@
-UNAME=$(shell uname)
-DEBUG=1
-INSTALL=install
-GIT_VERSION=$(shell git describe --tags --always)
-VERSION=$(shell git describe --tags --abbrev=0)
+TOPDIR=$(shell pwd)
 
-CFLAGS += -std=c99
-CFLAGS += -pipe
-CFLAGS += -Wall
-CFLAGS += -Wunused
-CFLAGS += -Iinclude
-CFLAGS += -I/usr/local/include
-CFLAGS += -DI3_VERSION=\"${GIT_VERSION}\"
-
-# Check if pkg-config is installed, because without pkg-config, the following
-# check for the version of libxcb cannot be done.
-ifeq ($(shell which pkg-config 2>/dev/null 1>/dev/null || echo 1),1)
-$(error "pkg-config was not found")
-endif
-
-ifeq ($(shell pkg-config --exists xcb-keysyms || echo 1),1)
-$(error "pkg-config could not find xcb-keysyms.pc")
-endif
-
-ifeq ($(shell pkg-config --exact-version=0.3.3 xcb-keysyms && echo 1),1)
-# xcb-keysyms fixed API from 0.3.3 to 0.3.4, so for some months, we will
-# have this here. Distributions should upgrade their libxcb in the meantime.
-CFLAGS += -DOLD_XCB_KEYSYMS_API
-endif
-
-LDFLAGS += -lm
-LDFLAGS += -lxcb-event
-LDFLAGS += -lxcb-property
-LDFLAGS += -lxcb-keysyms
-LDFLAGS += -lxcb-atom
-LDFLAGS += -lxcb-aux
-LDFLAGS += -lxcb-icccm
-LDFLAGS += -lxcb-xinerama
-LDFLAGS += -lX11
-LDFLAGS += -lev
-LDFLAGS += -L/usr/local/lib -L/usr/pkg/lib
-
-ifeq ($(UNAME),NetBSD)
-# We need -idirafter instead of -I to prefer the system’s iconv over GNU libiconv
-CFLAGS += -idirafter /usr/pkg/include
-LDFLAGS += -Wl,-rpath,/usr/local/lib -Wl,-rpath,/usr/pkg/lib
-endif
-
-ifeq ($(UNAME),FreeBSD)
-LDFLAGS += -liconv
-endif
-
-ifeq ($(UNAME),Linux)
-CFLAGS += -D_GNU_SOURCE
-endif
-
-ifeq ($(DEBUG),1)
-# Extended debugging flags, macros shall be available in gcc
-CFLAGS += -gdwarf-2
-CFLAGS += -g3
-else
-CFLAGS += -O2
-endif
-
-# Don’t print command lines which are run
-.SILENT:
-
-# Always remake the following targets
-.PHONY: install clean dist distclean
+include $(TOPDIR)/common.mk
 
 # Depend on the object files of all source-files in src/*.c and on all header files
 FILES=$(patsubst %.c,%.o,$(wildcard src/*.c))
@@ -80,6 +14,9 @@ src/%.o: src/%.c ${HEADERS}
 all: ${FILES}
 	echo "LINK i3"
 	$(CC) -o i3 ${FILES} $(LDFLAGS)
+	echo ""
+	echo "SUBDIR i3-msg"
+	$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg
 
 install: all
 	echo "INSTALL"
@@ -89,6 +26,7 @@ install: all
 	$(INSTALL) -m 0755 i3 $(DESTDIR)/usr/bin/
 	test -e $(DESTDIR)/etc/i3/config || $(INSTALL) -m 0644 i3.config $(DESTDIR)/etc/i3/config
 	$(INSTALL) -m 0644 i3.desktop $(DESTDIR)/usr/share/xsessions/
+	$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg
 
 dist: clean
 	[ ! -d i3-${VERSION} ] || rm -rf i3-${VERSION}
@@ -108,6 +46,7 @@ clean:
 	rm -f src/*.o
 	$(MAKE) -C docs clean
 	$(MAKE) -C man clean
+	$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg clean
 
 distclean: clean
 	rm -f i3