Misc: #49: Add CMake support

Add CMakeLists.txt to support building with CMake, as @pvanek requests.
The old Makefile system and CPackConfig.cmake are still usable. (Of
course, make sure you don't overwrite them by executing cmake.) There
must be a bunch of bugs in CMakeLists.txt. :-) Let chjj decide which one
he will choose, here I keep both.

.gitignore

@@ -13,11 +13,19 @@ missing
 stamp-h1
 compton
 *.o
-_CPack_Packages
-build
+build/
+
+# CMake files
 compton-*.deb
 compton-*.rpm
 compton-*.tar.bz2
+release/
+_CPack_Packages/
+CMakeCache.txt
+CMakeFiles/
+*.cmake
+install_manifest.txt
+
 
 # Vim files
 .*.sw[a-z]

CMakeLists.txt

@@ -0,0 +1,145 @@
+project(compton)
+cmake_minimum_required(VERSION 2.8)
+
+set(CPACK_PACKAGE_VERSION_MAJOR "0")
+set(CPACK_PACKAGE_VERSION_MINOR "0")
+set(CPACK_PACKAGE_VERSION_PATCH "0")
+
+set(compton_SRCS src/compton.c) 
+add_executable(compton ${compton_SRCS})
+
+set(CMAKE_C_FLAGS_DEBUG "-ggdb")
+set(CMAKE_C_FLAGS_RELEASE "-O2 -march=native")
+set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -march=native -ggdb")
+
+add_definitions("-Wall")
+
+# == Options ==
+
+option(CONFIG_REGEX_PCRE "Enable PCRE regular expression support for blacklist entries (requires libpcre)" ON)
+if (CONFIG_REGEX_PCRE)
+	add_definitions("-DCONFIG_REGEX_PCRE")
+endif ()
+
+option(CONFIG_REGEX_PCRE_JIT "Use JIT support of libpcre)" ON)
+if (CONFIG_REGEX_PCRE_JIT)
+	add_definitions("-DCONFIG_REGEX_PCRE_JIT")
+endif ()
+
+option(CONFIG_LIBCONFIG "Enable configuration file parsing using libconfig" ON)
+if (CONFIG_LIBCONFIG)
+	add_definitions("-DCONFIG_LIBCONFIG")
+endif ()
+
+# == Find libraries ==
+
+target_link_libraries(compton "-lm")
+
+include(FindPkgConfig)
+
+# --- Find X11 libs ---
+set(X11_FIND_REQUIRED 1)
+include(FindX11)
+
+macro(X11LIB_CHK lib)
+	if (NOT X11_${lib}_FOUND)
+		message(FATAL_ERROR "Could not find lib${lib}.")
+	endif ()
+	target_link_libraries(compton "${X11_${lib}_LIB}")
+endmacro ()
+
+X11LIB_CHK(Xcomposite)
+X11LIB_CHK(Xdamage)
+X11LIB_CHK(Xext)
+X11LIB_CHK(Xfixes)
+X11LIB_CHK(Xrender)
+
+# --- Find libpcre ---
+if (CONFIG_REGEX_PCRE)
+	pkg_check_modules(LIBPCRE REQUIRED libpcre>=8.12)
+	target_link_libraries(compton "${LIBPCRE_LDFLAGS}")
+endif ()
+
+# --- Find libconfig ---
+if (CONFIG_LIBCONFIG)
+	pkg_check_modules(LIBCONFIG REQUIRED libconfig>=1.3.2)
+	target_link_libraries(compton "${LIBCONFIG_LDFLAGS}")
+	if (LIBCONFIG_VERSION VERSION_LESS 1.4)
+		add_definitions("-DCONFIG_LIBCONFIG_LEGACY")
+		message(STATUS "libconfig-1.3* detected. Enable legacy mode.")
+	endif ()
+endif ()
+
+# == Install ==
+include(GNUInstallDirs)
+
+install(TARGETS compton
+	DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT prog)
+install(FILES "${PROJECT_SOURCE_DIR}/bin/compton-trans"
+	DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT prog)
+install(FILES
+	"${PROJECT_SOURCE_DIR}/man/compton.1"
+	"${PROJECT_SOURCE_DIR}/man/compton-trans.1"
+	DESTINATION "${CMAKE_INSTALL_MANDIR}" COMPONENT doc)
+install(FILES
+	"${PROJECT_SOURCE_DIR}/README.md"
+	"${PROJECT_SOURCE_DIR}/LICENSE"
+	DESTINATION "${CMAKE_INSTALL_DOCDIR}" COMPONENT doc)
+
+# == CPack ==
+
+if (NOT CPACK_SYSTEM_NAME)
+	set(CPACK_SYSTEM_NAME "${CMAKE_SYSTEM_PROCESSOR}")
+endif ()
+
+set(CPACK_PACKAGE_DESCRIPTION "A lightweight X compositing window manager, fork of xcompmgr-dana.")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "A lightweight X compositing window manager")
+set(CPACK_PACKAGE_CONTACT "nobody <devnull@example.com>")
+set(CPACK_PACKAGE_DIRECTORY "${CMAKE_SOURCE_DIR}/release")
+set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_SOURCE_DIR}/desc.txt")
+
+# --- Package config ---
+set(CPACK_GENERATOR "TBZ2" "DEB" "RPM")
+set(CPACK_MONOLITHIC_INSTALL 1)
+set(CPACK_STRIP_FILES 1)
+set(CPACK_RESOURCE_FILE_LICENSE "LICENSE")
+set(CPACK_RESOURCE_FILE_README "README.md")
+
+# --- Source package config ---
+set(CPACK_SOURCE_GENERATOR "TBZ2" "DEB" "RPM")
+set(CPACK_SOURCE_IGNORE_FILES
+	"/\\\\."
+	"\\\\.bak$"
+	"\\\\.o$"
+	"\\\\~$"
+	"\\\\.plist$"
+	"/compton$"
+	# Generated package files
+	"\\\\.tar\\\\.gz$"
+	"\\\\.tar\\\\.bz2$"
+	"\\\\.deb$"
+	"\\\\.rpm$"
+	"compton-.*\\\\.sh$"
+	# CMake files
+	"/Makefile$"
+	"/CMakeFiles/"
+	"\\\\.cmake$"
+	"CMakeCache\\\\.txt$"
+	"/build/"
+	"/release/"
+	"\\\\.diff$"
+	"/oprofile_data/"
+	"/install_manifest\\\\.txt$"
+)
+
+# --- DEB package config ---
+set(CPACK_DEBIAN_PACKAGE_SECTION "x11")
+# The dependencies are unreliable, just an example here
+set(CPACK_DEBIAN_PACKAGE_DEPENDS "libx11-6, libxext6, libxcomposite1, libxrender1, libxdamage1, libxfixes3, libpcre3, libconfig8")
+
+# --- RPM package config ---
+set(CPACK_RPM_PACKAGE_LICENSE "unknown")
+# The dependencies are unreliable, just an example here
+set(CPACK_RPM_PACKAGE_REQUIRES "libx11, libxext, libxcomposite, libxrender, libxdamage, libxfixes, libpcre, libconfig")
+
+include(CPack)

desc.txt

@@ -0,0 +1 @@
+Compton is a X compositing window manager, fork of xcompmgr-dana.