build: generate wpe-bridge sources at build time

CMakeLists.txt

@@ -27,6 +27,7 @@ find_package(EGL REQUIRED)
 find_package(GLIB REQUIRED COMPONENTS gio)
 find_package(Wayland REQUIRED)
 find_package(WaylandEGL REQUIRED)
+find_package(WaylandScanner REQUIRED)
 find_package(WPE REQUIRED)
 
 if (EGL_DEFINITIONS)
@@ -41,6 +42,7 @@ endif ()
 
 set(WPEBACKEND_FDO_INCLUDE_DIRECTORIES
     "include"
+    ${CMAKE_BINARY_DIR}
     ${EGL_INCLUDE_DIRS}
     ${GLIB_INCLUDE_DIRS}
     ${WAYLAND_INCLUDE_DIRS}
@@ -64,7 +66,13 @@ set(WPEBACKEND_FDO_PUBLIC_HEADERS
     include/wpe-fdo/fdo.h
 )
 
+set(WPEBACKEND_FDO_GENERATED_SOURCES
+    ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-protocol.c
+)
+
 set(WPEBACKEND_FDO_SOURCES
+    ${WPEBACKEND_FDO_GENERATED_SOURCES}
+
     src/fdo.cpp
     src/initialize-egl.cpp
     src/renderer-backend-egl.cpp
@@ -73,12 +81,22 @@ set(WPEBACKEND_FDO_SOURCES
     src/view-backend-exportable-private.cpp
     src/ws.cpp
 
-    src/bridge/wpe-bridge-protocol.c
-
     src/linux-dmabuf/linux-dmabuf.c
     src/linux-dmabuf/linux-dmabuf-protocol.c
 )
 
+file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/bridge)
+add_custom_command(
+    OUTPUT ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-protocol.c
+           ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-client-protocol.h
+           ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-server-protocol.h
+    DEPENDS ${CMAKE_SOURCE_DIR}/src/bridge/wpe-bridge.xml
+    COMMAND ${WAYLAND_SCANNER} ${WAYLAND_SCANNER_CODE_ARG} < ${CMAKE_SOURCE_DIR}/src/bridge/wpe-bridge.xml > ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-protocol.c
+    COMMAND ${WAYLAND_SCANNER} client-header < ${CMAKE_SOURCE_DIR}/src/bridge/wpe-bridge.xml > ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-client-protocol.h
+    COMMAND ${WAYLAND_SCANNER} server-header < ${CMAKE_SOURCE_DIR}/src/bridge/wpe-bridge.xml > ${CMAKE_BINARY_DIR}/bridge/wpe-bridge-server-protocol.h
+    VERBATIM
+)
+
 option(EXPORTABLE_EGL "Enable the exportable EGL interface" ON)
 
 if (EXPORTABLE_EGL)

cmake/FindWaylandScanner.cmake

@@ -0,0 +1,42 @@
+# - Try to find wayland-scanner.
+# Once done, this will define
+#
+#  WAYLAND_SCANNER_FOUND - system has Wayland.
+#  WAYLAND_SCANNER - the path to the wayland-scanner binary
+#  WAYLAND_SCANNER_CODE_ARG - the code argument to pass
+#
+# Copyright (C) 2019 Igalia S.L.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1.  Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# 2.  Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
+# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+find_package(PkgConfig)
+pkg_check_modules(WAYLAND_SCANNER wayland-scanner)
+
+pkg_get_variable(WAYLAND_SCANNER wayland-scanner wayland_scanner)
+if (WAYLAND_SCANNER_VERSION VERSION_LESS "1.15")
+    set(WAYLAND_SCANNER_CODE_ARG "code")
+else ()
+    set(WAYLAND_SCANNER_CODE_ARG "private-code")
+endif ()
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND_SCANNER DEFAULT_MSG WAYLAND_SCANNER)