depends: fix qt determinism

Qt's configure grabs the path to xkb's data root during configure, but the
build changes in 5.8 apparently broke the handling for cross builds. As a
result, the string embedded in the binary depends on whether or not some files
are present in the builder's filesystem.

The "-xkb-config-root" configure setting is intended to allow manual overriding
but it is also broken. See: https://bugreports.qt.io/browse/QTBUG-60005

This has since been fixed upstream, so just hard-code the path for now. We can
drop this patch when we bump to a fixed Qt.

Also, fix the "-qt-xkbcommon-x11" config param which was renamed. This does not
appear to affect build results, presumably because auto-detection is working,
but it does not hurt to be explicit.

depends/packages/qt.mk

@@ -8,7 +8,7 @@ $(package)_dependencies=openssl zlib
 $(package)_linux_dependencies=freetype fontconfig libxcb libX11 xproto libXext
 $(package)_build_subdir=qtbase
 $(package)_qt_libs=corelib network widgets gui plugins testlib
-$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_configure_mac.patch fix_no_printer.patch fix_rcc_determinism.patch fix_riscv64_arch.patch
+$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_configure_mac.patch fix_no_printer.patch fix_rcc_determinism.patch fix_riscv64_arch.patch xkb-default.patch
 
 $(package)_qttranslations_file_name=qttranslations-$($(package)_suffix)
 $(package)_qttranslations_sha256_hash=9822084f8e2d2939ba39f4af4c0c2320e45d5996762a9423f833055607604ed8
@@ -83,7 +83,7 @@ $(package)_config_opts_darwin += -device-option MAC_TARGET=$(host)
 $(package)_config_opts_darwin += -device-option MAC_LD64_VERSION=$(LD64_VERSION)
 endif
 
-$(package)_config_opts_linux  = -qt-xkbcommon
+$(package)_config_opts_linux  = -qt-xkbcommon-x11
 $(package)_config_opts_linux += -qt-xcb
 $(package)_config_opts_linux += -system-freetype
 $(package)_config_opts_linux += -no-feature-sessionmanager
@@ -137,6 +137,7 @@ define $(package)_preprocess_cmds
   patch -p1 -i $($(package)_patch_dir)/fix_configure_mac.patch &&\
   patch -p1 -i $($(package)_patch_dir)/fix_no_printer.patch &&\
   patch -p1 -i $($(package)_patch_dir)/fix_rcc_determinism.patch &&\
+  patch -p1 -i $($(package)_patch_dir)/xkb-default.patch &&\
   echo "!host_build: QMAKE_CFLAGS     += $($(package)_cflags) $($(package)_cppflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   echo "!host_build: QMAKE_CXXFLAGS   += $($(package)_cxxflags) $($(package)_cppflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   echo "!host_build: QMAKE_LFLAGS     += $($(package)_ldflags)" >> qtbase/mkspecs/common/gcc-base.conf && \

depends/patches/qt/xkb-default.patch

@@ -0,0 +1,26 @@
+--- old/qtbase/src/gui/configure.pri	2018-06-06 17:28:10.000000000 -0400
++++ new/qtbase/src/gui/configure.pri	2018-08-17 18:43:01.589384567 -0400
+@@ -43,18 +43,11 @@
+ }
+
+ defineTest(qtConfTest_xkbConfigRoot) {
+-    qtConfTest_getPkgConfigVariable($${1}): return(true)
+-
+-    for (dir, $$list("/usr/share/X11/xkb", "/usr/local/share/X11/xkb")) {
+-        exists($$dir) {
+-            $${1}.value = $$dir
+-            export($${1}.value)
+-            $${1}.cache += value
+-            export($${1}.cache)
+-            return(true)
+-        }
+-    }
+-    return(false)
++    $${1}.value = "/usr/share/X11/xkb"
++    export($${1}.value)
++    $${1}.cache += value
++    export($${1}.cache)
++    return(true)
+ }
+
+ defineTest(qtConfTest_qpaDefaultPlatform) {