REGRESSION(CMake): Make it possible to build without introspection
[WebKit-https.git] / Source / cmake / OptionsGTK.cmake
1 include(GNUInstallDirs)
2
3 set(PROJECT_VERSION_MAJOR 2)
4 set(PROJECT_VERSION_MINOR 7)
5 set(PROJECT_VERSION_MICRO 1)
6 set(PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_MICRO})
7 set(WEBKITGTK_API_VERSION 4.0)
8
9 # Libtool library version, not to be confused with API version.
10 # See http://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
11 CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(WEBKIT2 39 0 2)
12 CALCULATE_LIBRARY_VERSIONS_FROM_LIBTOOL_TRIPLE(JAVASCRIPTCORE 19 0 1)
13
14 set(ENABLE_CREDENTIAL_STORAGE ON CACHE BOOL "Whether or not to enable support for credential storage using libsecret.")
15 set(ENABLE_GTKDOC OFF CACHE BOOL "Whether or not to use generate gtkdoc.")
16 set(ENABLE_X11_TARGET ON CACHE BOOL "Whether to enable support for the X11 windowing target.")
17 set(ENABLE_WAYLAND_TARGET OFF CACHE BOOL "Whether to enable support for the Wayland windowing target.")
18 set(ENABLE_INTROSPECTION ON CACHE BOOL "Whether to enable GObject introspection.")
19
20 # These are shared variables, but we special case their definition so that we can use the
21 # CMAKE_INSTALL_* variables that are populated by the GNUInstallDirs macro.
22 set(LIB_INSTALL_DIR "${CMAKE_INSTALL_FULL_LIBDIR}" CACHE PATH "Absolute path to library installation directory")
23 set(EXEC_INSTALL_DIR "${CMAKE_INSTALL_FULL_BINDIR}" CACHE PATH "Absolute path to executable installation directory")
24 set(LIBEXEC_INSTALL_DIR "${CMAKE_INSTALL_FULL_LIBEXECDIR}/webkit2gtk-${WEBKITGTK_API_VERSION}" CACHE PATH "Absolute path to install executables executed by the library")
25
26 set(DATA_BUILD_DIR "${CMAKE_BINARY_DIR}/share/${WebKit_OUTPUT_NAME}")
27 set(DATA_INSTALL_DIR "${CMAKE_INSTALL_DATADIR}/webkitgtk-${WEBKITGTK_API_VERSION}")
28 set(WEBKITGTK_HEADER_INSTALL_DIR "${CMAKE_INSTALL_INCLUDEDIR}/webkitgtk-${WEBKITGTK_API_VERSION}")
29 set(INTROSPECTION_INSTALL_GIRDIR "${CMAKE_INSTALL_FULL_DATADIR}/gir-1.0")
30 set(INTROSPECTION_INSTALL_TYPELIBDIR "${LIB_INSTALL_DIR}/girepository-1.0")
31
32 find_package(Cairo 1.10.2 REQUIRED)
33 find_package(Fontconfig 2.8.0 REQUIRED)
34 find_package(Freetype2 2.4.2 REQUIRED)
35 find_package(HarfBuzz 0.9.2 REQUIRED)
36 find_package(ICU REQUIRED)
37 find_package(JPEG REQUIRED)
38 find_package(LibSoup 2.42.0 REQUIRED)
39 find_package(LibXml2 2.8.0 REQUIRED)
40 find_package(LibXslt 1.1.7 REQUIRED)
41 find_package(PNG REQUIRED)
42 find_package(Sqlite REQUIRED)
43 find_package(Threads REQUIRED)
44 find_package(ZLIB REQUIRED)
45 find_package(ATK REQUIRED)
46 find_package(WebP REQUIRED)
47 find_package(ATSPI 2.5.3)
48 find_package(GObjectIntrospection)
49 find_package(OpenGL)
50 find_package(EGL)
51 find_package(GeoClue2 2.1.5)
52
53 if (NOT GEOCLUE2_FOUND)
54     find_package(GeoClue)
55 endif ()
56
57 if (ENABLE_X11_TARGET)
58     # We don't use find_package for GLX because it is part of -lGL, unlike EGL.
59     check_include_files("GL/glx.h" GLX_FOUND)
60 endif ()
61
62 WEBKIT_OPTION_BEGIN()
63 WEBKIT_OPTION_DEFINE(ENABLE_PLUGIN_PROCESS_GTK2 "Whether to build WebKitPluginProcess2 to load GTK2 based plugins." ON)
64
65 if (OPENGL_FOUND AND (GLX_FOUND OR EGL_FOUND))
66     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEBGL ON)
67
68     if (GLX_FOUND)
69         list(APPEND CAIRO_GL_COMPONENTS cairo-glx)
70     endif ()
71     if (EGL_FOUND)
72         list(APPEND CAIRO_GL_COMPONENTS cairo-egl)
73     endif ()
74     find_package(CairoGL 1.10.2 COMPONENTS ${CAIRO_GL_COMPONENTS})
75     if (CAIRO_GL_FOUND)
76         WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ACCELERATED_2D_CANVAS ON)
77     else ()
78         WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ACCELERATED_2D_CANVAS OFF)
79     endif ()
80 else ()
81     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEBGL OFF)
82     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ACCELERATED_2D_CANVAS OFF)
83 endif ()
84
85 if (GEOCLUE2_FOUND OR GEOCLUE_FOUND)
86     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_GEOLOCATION ON)
87 else ()
88     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_GEOLOCATION OFF)
89 endif ()
90
91 if (DEVELOPER_MODE)
92     set(ENABLE_TOOLS ON)
93     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_API_TESTS ON)
94 else ()
95     set(ENABLE_TOOLS OFF)
96     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_API_TESTS OFF)
97     set(WebKit2_VERSION_SCRIPT "-Wl,--version-script,${CMAKE_MODULE_PATH}/gtksymbols.filter")
98 endif ()
99
100 if (CMAKE_SYSTEM_NAME MATCHES "Linux")
101     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_MEMORY_SAMPLER ON)
102 else ()
103     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_MEMORY_SAMPLER OFF)
104 endif ()
105
106 # FIXME: We want to expose fewer options to downstream, but for now everything is public.
107 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_3D_RENDERING ON)
108 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ACCESSIBILITY ON)
109 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_BATTERY_STATUS OFF)
110 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CANVAS_PATH OFF)
111 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS3_TEXT OFF)
112 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS_DEVICE_ADAPTATION OFF)
113 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS_GRID_LAYOUT OFF)
114 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS_IMAGE_SET ON)
115 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS_REGIONS ON)
116 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CSS_SELECTORS_LEVEL4 ON)
117 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_CUSTOM_SCHEME_HANDLER OFF)
118 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_DATALIST_ELEMENT OFF)
119 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_DOWNLOAD_ATTRIBUTE OFF)
120 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_DRAG_SUPPORT ON)
121 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ENCRYPTED_MEDIA OFF)
122 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_ENCRYPTED_MEDIA_V2 OFF)
123 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_FTPDIR OFF)
124 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_FULLSCREEN_API ON)
125 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_GAMEPAD OFF)
126 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_GAMEPAD_DEPRECATED OFF)
127 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_INDEXED_DATABASE OFF)
128 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_INDEXED_DATABASE_IN_WORKERS OFF)
129 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_INPUT_TYPE_COLOR OFF)
130 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_LEGACY_WEB_AUDIO OFF)
131 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_LINK_PREFETCH OFF)
132 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_MEDIA_CAPTURE OFF)
133 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_MEDIA_CONTROLS_SCRIPT ON)
134 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_MHTML ON)
135 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_NAVIGATOR_CONTENT_UTILS OFF)
136 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_NAVIGATOR_HWCONCURRENCY ON)
137 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_NETSCAPE_PLUGIN_API ON)
138 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_PICTURE_SIZES ON)
139 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_QUOTA OFF)
140 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_RESOLUTION_MEDIA_QUERY OFF)
141 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_REQUEST_ANIMATION_FRAME ON)
142 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_SECCOMP_FILTERS OFF)
143 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_SHARED_WORKERS ON)
144 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_SPELLCHECK ON)
145 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_SUBTLE_CRYPTO OFF)
146 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_TEMPLATE_ELEMENT ON)
147 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_TOUCH_EVENTS ON)
148 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_USERSELECT_ALL ON)
149 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_USER_MESSAGE_HANDLERS ON)
150 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VIBRATION OFF)
151 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VIDEO ON)
152 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VIDEO_TRACK ON)
153 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VIEW_MODE_CSS_MEDIA ON)
154 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEB_AUDIO ON)
155 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEB_TIMING ON)
156 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_XHR_TIMEOUT ON)
157 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_NETWORK_PROCESS ON)
158 WEBKIT_OPTION_DEFAULT_PORT_VALUE(WTF_USE_TILED_BACKING_STORE OFF)
159 WEBKIT_OPTION_END()
160
161 if (ENABLE_PLUGIN_PROCESS_GTK2)
162     find_package(GTK2 2.24.10 REQUIRED)
163     find_package(GDK2 2.24.10 REQUIRED)
164     add_definitions(-DENABLE_PLUGIN_PROCESS_GTK2=1)
165 endif ()
166
167 if (ENABLE_X11_TARGET)
168     add_definitions(-DWTF_PLATFORM_X11=1)
169     add_definitions(-DMOZ_X11=1)
170     if (WTF_OS_UNIX)
171         add_definitions(-DXP_UNIX)
172     endif ()
173 endif ()
174
175 if (ENABLE_WAYLAND_TARGET)
176     add_definitions(-DWTF_PLATFORM_WAYLAND=1)
177 endif ()
178
179 set(ENABLE_WEBCORE ON)
180 set(ENABLE_INSPECTOR ON)
181 set(ENABLE_WEBKIT OFF)
182 set(ENABLE_WEBKIT2 ON)
183 set(ENABLE_PLUGIN_PROCESS ON)
184 set(ENABLE_SMOOTH_SCROLLING ON)
185
186 set(GDK_VERSION_MIN_REQUIRED GDK_VERSION_3_6)
187 set(GTK_API_VERSION 3.0)
188
189 set(WTF_USE_SOUP 1)
190 set(WTF_USE_UDIS86 1)
191
192 set(WTF_LIBRARY_TYPE STATIC)
193 set(WTF_OUTPUT_NAME WTFGTK)
194 set(JavaScriptCore_OUTPUT_NAME javascriptcoregtk-${WEBKITGTK_API_VERSION})
195 set(WebCore_OUTPUT_NAME WebCoreGTK)
196 set(WebKit_OUTPUT_NAME webkitgtk-${WEBKITGTK_API_VERSION})
197 set(WebKit2_OUTPUT_NAME webkit2gtk-${WEBKITGTK_API_VERSION})
198 set(WebKit2_WebProcess_OUTPUT_NAME WebKitWebProcess)
199 set(WebKit2_NetworkProcess_OUTPUT_NAME WebKitNetworkProcess)
200 set(WebKit2_PluginProcess_OUTPUT_NAME WebKitPluginProcess)
201
202 add_definitions(-DBUILDING_GTK__=1)
203 add_definitions(-DGETTEXT_PACKAGE="WebKit2GTK-${WEBKITGTK_API_VERSION}")
204 add_definitions(-DDATA_DIR="${CMAKE_INSTALL_DATADIR}")
205 add_definitions(-DUSER_AGENT_GTK_MAJOR_VERSION=601)
206 add_definitions(-DUSER_AGENT_GTK_MINOR_VERSION=1)
207 add_definitions(-DWEBKITGTK_API_VERSION_STRING="${WEBKITGTK_API_VERSION}")
208
209 if (ENABLE_VIDEO OR ENABLE_WEB_AUDIO)
210     set(GSTREAMER_COMPONENTS app pbutils)
211     add_definitions(-DWTF_USE_GSTREAMER)
212     if (ENABLE_VIDEO)
213         list(APPEND GSTREAMER_COMPONENTS video mpegts tag)
214     endif ()
215
216     if (ENABLE_WEB_AUDIO)
217         list(APPEND GSTREAMER_COMPONENTS audio fft)
218         add_definitions(-DWTF_USE_WEBAUDIO_GSTREAMER)
219     endif ()
220
221     find_package(GStreamer 1.0.3 REQUIRED COMPONENTS ${GSTREAMER_COMPONENTS})
222
223     if (PC_GSTREAMER_MPEGTS_FOUND)
224         add_definitions(-DWTF_USE_GSTREAMER_MPEGTS)
225         set(USE_GSTREAMER_MPEGTS TRUE)
226     endif ()
227 endif ()
228
229 if (ENABLE_WAYLAND_TARGET)
230     set(GTK3_REQUIRED_VERSION 3.12.0)
231 else ()
232     set(GTK3_REQUIRED_VERSION 3.6.0)
233 endif ()
234
235 find_package(GTK3 ${GTK3_REQUIRED_VERSION} REQUIRED)
236 find_package(GDK3 ${GTK3_REQUIRED_VERSION} REQUIRED)
237 set(GTK_LIBRARIES ${GTK3_LIBRARIES})
238 set(GTK_INCLUDE_DIRS ${GTK3_INCLUDE_DIRS})
239 set(GDK_LIBRARIES ${GDK3_LIBRARIES})
240 set(GDK_INCLUDE_DIRS ${GDK3_INCLUDE_DIRS})
241
242 set(glib_components gio gobject gthread gmodule)
243 if (ENABLE_GAMEPAD_DEPRECATED OR ENABLE_GEOLOCATION)
244     list(APPEND glib_components gio-unix)
245 endif ()
246 find_package(GLIB 2.33.2 REQUIRED COMPONENTS ${glib_components})
247
248 if (ENABLE_GEOLOCATION)
249     if (GEOCLUE2_FOUND)
250       set(WTF_USE_GEOCLUE2 1)
251     else ()
252       set(WTF_USE_GEOCLUE2 0)
253     endif ()
254 endif ()
255
256 find_package(GTKUnixPrint)
257 if (GTK_UNIX_PRINT_FOUND)
258     set(HAVE_GTK_UNIX_PRINTING 1)
259 endif ()
260
261 if (ENABLE_CREDENTIAL_STORAGE)
262     find_package(Libsecret)
263     set(ENABLE_CREDENTIAL_STORAGE 1)
264 endif ()
265
266 if (GTK_SUPPORTS_GESTURES)
267     add_definitions(-DHAVE_GTK_GESTURES=1)
268 endif ()
269
270 # This part can be simplified once CMake 2.8.6 is required and
271 # CMakePushCheckState can be used. We need to have OPENGL_INCLUDE_DIR as part
272 # of the directories check_include_files() looks for in case OpenGL is
273 # installed into a non-standard location.
274 if (ENABLE_X11_TARGET)
275     set(REQUIRED_INCLUDES_OLD ${CMAKE_REQUIRED_INCLUDES})
276     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${OPENGL_INCLUDE_DIR})
277     set(CMAKE_REQUIRED_INCLUDES ${REQUIRED_INCLUDES_OLD})
278
279     if (GLX_FOUND)
280         set(WTF_USE_GLX 1)
281     endif ()
282 endif ()
283
284 if (EGL_FOUND)
285     set(WTF_USE_EGL 1)
286 endif ()
287
288 if (ENABLE_SPELLCHECK)
289     find_package(Enchant REQUIRED)
290 endif ()
291
292 if (OPENGL_FOUND AND (GLX_FOUND OR EGL_FOUND))
293     set(ENABLE_TEXTURE_MAPPER 1)
294     set(WTF_USE_3D_GRAPHICS 1)
295
296     add_definitions(-DWTF_USE_OPENGL=1)
297     add_definitions(-DWTF_USE_3D_GRAPHICS=1)
298     add_definitions(-DWTF_USE_TEXTURE_MAPPER=1)
299     add_definitions(-DWTF_USE_TEXTURE_MAPPER_GL=1)
300     add_definitions(-DENABLE_3D_RENDERING=1)
301
302     if (EGL_FOUND)
303         add_definitions(-DWTF_USE_EGL=1)
304     endif ()
305
306     if (GLX_FOUND)
307         add_definitions(-DWTF_USE_GLX=1)
308     endif ()
309 endif ()
310
311 if (ENABLE_GAMEPAD_DEPRECATED)
312     find_package(GUdev)
313 endif ()
314
315 if (ENABLE_FTL_JIT)
316     find_package(LLVM REQUIRED)
317     find_package(LIBCXXABI REQUIRED)
318     set(HAVE_LLVM ON)
319 endif ()
320
321 set(CPACK_SOURCE_GENERATOR TBZ2)
322
323 set(DERIVED_SOURCES_GOBJECT_DOM_BINDINGS_DIR ${DERIVED_SOURCES_DIR}/webkitdom)
324 set(DERIVED_SOURCES_WEBKITGTK_DIR ${DERIVED_SOURCES_DIR}/webkitgtk)
325 set(DERIVED_SOURCES_WEBKITGTK_API_DIR ${DERIVED_SOURCES_WEBKITGTK_DIR}/webkit)
326 set(DERIVED_SOURCES_GOBJECT_DOM_BINDINGS_DIR ${DERIVED_SOURCES_DIR}/webkitdom)
327 set(DERIVED_SOURCES_WEBKIT2GTK_DIR ${DERIVED_SOURCES_DIR}/webkit2gtk)
328 set(DERIVED_SOURCES_WEBKIT2GTK_API_DIR ${DERIVED_SOURCES_WEBKIT2GTK_DIR}/webkit2)
329 set(FORWARDING_HEADERS_DIR ${DERIVED_SOURCES_DIR}/ForwardingHeaders)
330 set(FORWARDING_HEADERS_WEBKIT2GTK_DIR ${FORWARDING_HEADERS_DIR}/webkit2gtk)
331 set(FORWARDING_HEADERS_WEBKIT2GTK_EXTENSION_DIR ${FORWARDING_HEADERS_DIR}/webkit2gtk-webextension)
332
333 set(WebKit_PKGCONFIG_FILE ${CMAKE_BINARY_DIR}/Source/WebKit/gtk/webkitgtk-${WEBKITGTK_API_VERSION}.pc)
334 set(WebKit2_PKGCONFIG_FILE ${CMAKE_BINARY_DIR}/Source/WebKit2/webkit2gtk-${WEBKITGTK_API_VERSION}.pc)
335 set(WebKit2WebExtension_PKGCONFIG_FILE ${CMAKE_BINARY_DIR}/Source/WebKit2/webkit2gtk-web-extension-${WEBKITGTK_API_VERSION}.pc)
336
337 set(SHOULD_INSTALL_JS_SHELL ON)
338
339 # Push of rbp is needed after JSC JIT uses CStack. See http://wkbug.com/127777.
340 if (UNIX AND NOT APPLE)
341     if (CMAKE_COMPILER_IS_GNUCXX)
342         set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-omit-frame-pointer -fno-tree-dce")
343         set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-omit-frame-pointer -fno-tree-dce")
344     endif ()
345     if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
346         set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-omit-frame-pointer")
347         set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-omit-frame-pointer")
348     endif ()
349 endif ()
350
351 # Add a typelib file to the list of all typelib dependencies. This makes it easy to
352 # expose a 'gir' target with all gobject-introspection files.
353 macro(ADD_TYPELIB typelib)
354     if (ENABLE_INTROSPECTION)
355         get_filename_component(target_name ${typelib} NAME_WE)
356         add_custom_target(${target_name}-gir ALL DEPENDS ${typelib})
357         list(APPEND GObjectIntrospectionTargets ${target_name}-gir)
358         set(GObjectIntrospectionTargets ${GObjectIntrospectionTargets} PARENT_SCOPE)
359     endif ()
360 endmacro()
361
362 # CMake does not automatically add --whole-archive when building shared objects from
363 # a list of convenience libraries. This can lead to missing symbols in the final output.
364 # We add --whole-archive to all libraries manually to prevent the linker from trimming
365 # symbols that we actually need later.
366 macro(ADD_WHOLE_ARCHIVE_TO_LIBRARIES _list_name)
367     foreach (library IN LISTS ${_list_name})
368       list(APPEND ${_list_name}_TMP -Wl,--whole-archive ${library} -Wl,--no-whole-archive)
369     endforeach ()
370     set(${_list_name} "${${_list_name}_TMP}")
371 endmacro()
372
373 if (CMAKE_MAJOR_VERSION LESS 3)
374     # Before CMake 3 it was necessary to use a build script instead of using cmake --build directly
375     # to preserve colors and pretty-printing.
376
377     build_command(COMMAND_LINE_TO_BUILD)
378     # build_command unconditionally adds -i (ignore errors) for make, and there's
379     # no reasonable way to turn that off, so we just replace it with -k, which has
380     # the same effect, except that the return code will indicate that an error occurred.
381     # See: http://www.cmake.org/cmake/help/v3.0/command/build_command.html
382     string(REPLACE " -i" " -k" COMMAND_LINE_TO_BUILD ${COMMAND_LINE_TO_BUILD})
383     file(WRITE
384         ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/build.sh
385         "#!/bin/sh\n"
386         "${COMMAND_LINE_TO_BUILD} $@"
387     )
388     file(COPY ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/build.sh
389         DESTINATION ${CMAKE_BINARY_DIR}
390         FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
391     )
392 endif ()
393
394 if (ENABLE_SUBTLE_CRYPTO)
395     find_package(GnuTLS 3.0.0 REQUIRED)
396 endif ()