Update buildroot & docker (#25)

* Update docker & buildroot

* Fix

* fix versions

buildroot/package/qt5/qt5base/qmake.conf.in

@@ -0,0 +1,30 @@
+# Qt5 has a mechanism to support "device" profiles, so that people can
+# specify the compiler, compiler flags and so on for a specific device.
+
+# We leverage this mechanism in the Buildroot packaging of qt5 to
+# simplify cross-compilation: we have our own "device" definition, which
+# allows us to easily pass the cross-compiler paths and flags from our
+# qt5.mk.
+
+include(../common/linux_device_pre.conf)
+
+# modifications to g++-unix.conf
+QMAKE_CC                = $${CROSS_COMPILE}gcc
+QMAKE_CXX               = $${CROSS_COMPILE}g++
+
+# modifications to gcc-base.conf
+QMAKE_CFLAGS           += $${BR_COMPILER_CFLAGS}
+QMAKE_CXXFLAGS         += $${BR_COMPILER_CXXFLAGS}
+QMAKE_CXXFLAGS_RELEASE += -O3
+CONFIG                 += nostrip
+
+QMAKE_LIBS             += -lrt -lpthread -ldl
+QMAKE_CFLAGS_ISYSTEM   =
+
+# Architecturespecific configuration
+include(arch.conf)
+
+@EGLFS_DEVICE@
+
+include(../common/linux_device_post.conf)
+load(qt_config)