package/libglfw: fix wayland build

Fix the following build failure raised since bump to version 3.3.6 in
commit 3cd9bb4f2a91d3739c5da96f5e4dd37d3ae13799:

CMake Error at CMakeLists.txt:252 (find_package):
  Could not find a package configuration file provided by "ECM" with any of
  the following names:

    ECMConfig.cmake
    ecm-config.cmake

Fixes:
 - http://autobuild.buildroot.org/results/0d7420aff7392c294614fd12e65ac7cd57787e98

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/libglfw/0001-Wayland-Remove-extra-cmake-modules-dependency.patch

@@ -0,0 +1,121 @@
+From 2747e47393cbca2d09db56223e735bd94b21e2eb Mon Sep 17 00:00:00 2001
+From: Joel Winarske <joel.winarske@gmail.com>
+Date: Mon, 28 Sep 2020 22:23:02 -0700
+Subject: [PATCH] Wayland: Remove extra-cmake-modules dependency
+
+Fixes #1774.
+
+[Retrieved (and backported) from:
+https://github.com/glfw/glfw/commit/2747e47393cbca2d09db56223e735bd94b21e2eb]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ .gitignore         |  4 ---
+ CMakeLists.txt     | 16 ++++++------
+ src/CMakeLists.txt | 62 ++++++++++++++++++++++++++++------------------
+ 3 files changed, 45 insertions(+), 37 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 42bfa1806d..394827520b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -191,20 +191,18 @@ endif()
+ # Use Wayland for window creation
+ #--------------------------------------------------------------------
+ if (_GLFW_WAYLAND)
+-    find_package(ECM REQUIRED NO_MODULE)
+-    list(APPEND CMAKE_MODULE_PATH "${ECM_MODULE_PATH}")
+ 
+-    find_package(Wayland REQUIRED Client Cursor Egl)
+-    find_package(WaylandScanner REQUIRED)
+-    find_package(WaylandProtocols 1.15 REQUIRED)
++    include(FindPkgConfig)
++    pkg_check_modules(Wayland REQUIRED
++        wayland-client>=0.2.7
++        wayland-cursor>=0.2.7
++        wayland-egl>=0.2.7
++        xkbcommon)
+ 
+     list(APPEND glfw_PKG_DEPS "wayland-client")
+ 
+     list(APPEND glfw_INCLUDE_DIRS "${Wayland_INCLUDE_DIRS}")
+-    list(APPEND glfw_LIBRARIES "${Wayland_LIBRARIES}" "${CMAKE_THREAD_LIBS_INIT}")
+-
+-    find_package(XKBCommon REQUIRED)
+-    list(APPEND glfw_INCLUDE_DIRS "${XKBCOMMON_INCLUDE_DIRS}")
++    list(APPEND glfw_LIBRARIES "${Wayland_LINK_LIBRARIES}" "${CMAKE_THREAD_LIBS_INIT}")
+ 
+     include(CheckIncludeFiles)
+     include(CheckFunctionExists)
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 2f2bdd883d..e834506c6c 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -45,30 +45,44 @@ if (_GLFW_X11 OR _GLFW_WAYLAND)
+                      posix_time.c posix_thread.c xkb_unicode.c
+                      egl_context.c osmesa_context.c)
+ 
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/stable/xdg-shell/xdg-shell.xml"
+-        BASENAME xdg-shell)
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/xdg-decoration/xdg-decoration-unstable-v1.xml"
+-        BASENAME xdg-decoration)
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/stable/viewporter/viewporter.xml"
+-        BASENAME viewporter)
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/relative-pointer/relative-pointer-unstable-v1.xml"
+-        BASENAME relative-pointer-unstable-v1)
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml"
+-        BASENAME pointer-constraints-unstable-v1)
+-    ecm_add_wayland_client_protocol(glfw_SOURCES
+-        PROTOCOL
+-        "${WAYLAND_PROTOCOLS_PKGDATADIR}/unstable/idle-inhibit/idle-inhibit-unstable-v1.xml"
+-        BASENAME idle-inhibit-unstable-v1)
++    find_program(WAYLAND_SCANNER_EXECUTABLE NAMES wayland-scanner)
++    pkg_check_modules(WAYLAND_PROTOCOLS REQUIRED wayland-protocols>=1.15)
++    pkg_get_variable(WAYLAND_PROTOCOLS_BASE wayland-protocols pkgdatadir)
++
++    macro(wayland_generate protocol_file output_file)
++          add_custom_command(OUTPUT ${output_file}.h
++              COMMAND ${WAYLAND_SCANNER_EXECUTABLE} client-header
++              < ${protocol_file} > ${output_file}.h
++              DEPENDS ${protocol_file})
++          list(APPEND glfw_SOURCES ${output_file}.h)
++
++          add_custom_command(OUTPUT ${output_file}.c 
++              COMMAND ${WAYLAND_SCANNER_EXECUTABLE} private-code
++              < ${protocol_file} > ${output_file}.c
++              DEPENDS ${protocol_file})
++          list(APPEND glfw_SOURCES ${output_file}.c)
++    endmacro()
++
++    set(GLFW_WAYLAND_PROTOCOL_SOURCES)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/stable/xdg-shell/xdg-shell.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-xdg-shell-client-protocol)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/unstable/xdg-decoration/xdg-decoration-unstable-v1.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-xdg-decoration-client-protocol)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/stable/viewporter/viewporter.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-viewporter-client-protocol)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/unstable/relative-pointer/relative-pointer-unstable-v1.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-relative-pointer-unstable-v1-client-protocol)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/unstable/pointer-constraints/pointer-constraints-unstable-v1.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-pointer-constraints-unstable-v1-client-protocol)
++    wayland_generate(
++        ${WAYLAND_PROTOCOLS_BASE}/unstable/idle-inhibit/idle-inhibit-unstable-v1.xml
++        ${CMAKE_BINARY_DIR}/src/wayland-idle-inhibit-unstable-v1-client-protocol)
++
+ elseif (_GLFW_OSMESA)
+     set(glfw_HEADERS ${common_HEADERS} null_platform.h null_joystick.h
+                      posix_time.h posix_thread.h osmesa_context.h)

package/libglfw/0002-src-CMakeLists.txt-allow-override-of-wayland-pkgdata.patch

@@ -0,0 +1,32 @@
+From 46aaf2b2b4d3ec240b9aad175bb3eddb6ae11ead Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Fri, 4 Mar 2022 17:59:19 +0100
+Subject: [PATCH] src/CMakeLists.txt: allow override of wayland pkgdatadir
+
+Allow the user to override WAYLAND_{PROTOCOLS_BASE,CLIENT_PKGDATADIR}
+(needed when cross-compiling)
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: https://github.com/glfw/glfw/pull/2053]
+---
+ src/CMakeLists.txt | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 01f191c9..475ce882 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -75,7 +75,9 @@ if (GLFW_BUILD_WAYLAND)
+     include(FindPkgConfig)
+     find_program(WAYLAND_SCANNER_EXECUTABLE NAMES wayland-scanner)
+     pkg_check_modules(WAYLAND_PROTOCOLS REQUIRED wayland-protocols>=1.15)
+-    pkg_get_variable(WAYLAND_PROTOCOLS_BASE wayland-protocols pkgdatadir)
++    if (NOT WAYLAND_PROTOCOLS_BASE)
++        pkg_get_variable(WAYLAND_PROTOCOLS_BASE wayland-protocols pkgdatadir)
++    endif()
+ 
+     macro(wayland_generate protocol_file output_file)
+         add_custom_command(OUTPUT "${output_file}.h"
+-- 
+2.34.1
+

package/libglfw/Config.in

@@ -2,6 +2,8 @@ config BR2_PACKAGE_LIBGLFW
 	bool "libglfw"
 	depends on BR2_PACKAGE_XORG7 || BR2_PACKAGE_WAYLAND
 	depends on BR2_PACKAGE_HAS_LIBGL || BR2_PACKAGE_HAS_LIBGLES
+	select BR2_PACKAGE_LIBXKBCOMMON if BR2_PACKAGE_WAYLAND
+	select BR2_PACKAGE_WAYLAND_PROTOCOLS if BR2_PACKAGE_WAYLAND
 	select BR2_PACKAGE_XLIB_LIBXCURSOR if BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_XLIB_LIBXEXT if BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_XLIB_LIBXI if BR2_PACKAGE_XORG7

package/libglfw/libglfw.mk

@@ -29,7 +29,11 @@ LIBGLFW_DEPENDENCIES += libgles
 endif
 
 ifeq ($(BR2_PACKAGE_WAYLAND),y)
-LIBGLFW_CONF_OPTS +=  -DGLFW_USE_WAYLAND=1
+LIBGLFW_DEPENDENCIES += libxkbcommon wayland-protocols
+# Override pkg-config pkgdatadir variable, it needs the prefix
+LIBGLFW_CONF_OPTS += \
+	-DGLFW_USE_WAYLAND=1 \
+	-DWAYLAND_PROTOCOLS_BASE=$(STAGING_DIR)/usr/share/wayland-protocols
 endif
 
 ifeq ($(BR2_PACKAGE_XLIB_LIBXXF86VM),y)