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

common.mk

@@ -0,0 +1,70 @@
+UNAME=$(shell uname)
+DEBUG=1
+INSTALL=install
+GIT_VERSION=$(shell git describe --tags --always)
+VERSION=$(shell git describe --tags --abbrev=0)
+
+CFLAGS += -std=c99
+CFLAGS += -pipe
+CFLAGS += -Wall
+CFLAGS += -Wunused
+CFLAGS += -Iinclude
+CFLAGS += -I/usr/local/include
+CFLAGS += -DI3_VERSION=\"${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
+