diff --git a/package/qt6/qt6.mk b/package/qt6/qt6.mk
index cff9f5fbc7..13482c33cc 100644
--- a/package/qt6/qt6.mk
+++ b/package/qt6/qt6.mk
@@ -12,3 +12,15 @@ QT6_SITE = https://download.qt.io/archive/qt/$(QT6_VERSION_MAJOR)/$(QT6_VERSION)
 QT6_GIT = git://code.qt.io
 
 include $(sort $(wildcard package/qt6/*/*.mk))
+
+# The file "qt.conf" can be used to override the hard-coded paths that are
+# compiled into the Qt library. We need it to make "qmake" relocatable and
+# tweak the per-package install paths
+define QT6_INSTALL_QT_CONF
+	rm -f $(HOST_DIR)/bin/qt.conf
+	sed -e "s|@@HOST_DIR@@|$(HOST_DIR)|" -e "s|@@STAGING_DIR@@|$(STAGING_DIR)|" \
+		$(QT6BASE_PKGDIR)/qt.conf.in > $(HOST_DIR)/bin/qt.conf
+endef
+
+# Variable for other Qt applications to use
+QT6_QMAKE = $(HOST_DIR)/bin/qmake -spec devices/linux-buildroot-g++
diff --git a/package/qt6/qt6base/qmake.conf b/package/qt6/qt6base/qmake.conf
new file mode 100644
index 0000000000..8d9987470d
--- /dev/null
+++ b/package/qt6/qt6base/qmake.conf
@@ -0,0 +1,34 @@
+# Qt6 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 qt6 to
+# simplify cross-compilation: we have our own "device" definition, which
+# allows us to easily pass the cross-compiler paths and flags from our
+# qt6.mk.
+
+include(../common/linux_device_pre.conf)
+
+# modifications to g++-unix.conf
+QMAKE_CC                = $${CROSS_COMPILE}gcc
+QMAKE_CXX               = $${CROSS_COMPILE}g++
+QMAKE_LINK              = $${CROSS_COMPILE}g++
+
+# modifications to gcc-base.conf
+QMAKE_CFLAGS           += $${BR_COMPILER_CFLAGS}
+QMAKE_CXXFLAGS         += $${BR_COMPILER_CXXFLAGS}
+# Remove all optimisation flags, we really only want our own.
+QMAKE_CFLAGS_OPTIMIZE       =
+QMAKE_CFLAGS_OPTIMIZE_DEBUG =
+QMAKE_CFLAGS_OPTIMIZE_FULL  =
+QMAKE_CFLAGS_OPTIMIZE_SIZE  =
+QMAKE_CFLAGS_DEBUG =
+QMAKE_CXXFLAGS_DEBUG =
+QMAKE_CFLAGS_RELEASE =
+QMAKE_CXXFLAGS_RELEASE =
+CONFIG                 += nostrip
+
+QMAKE_LIBS             += -lrt -lpthread -ldl
+QMAKE_CFLAGS_ISYSTEM   =
+
+include(../common/linux_device_post.conf)
+load(qt_config)
diff --git a/package/qt6/qt6base/qplatformdefs.h b/package/qt6/qt6base/qplatformdefs.h
new file mode 100644
index 0000000000..99e9a27923
--- /dev/null
+++ b/package/qt6/qt6base/qplatformdefs.h
@@ -0,0 +1 @@
+#include "../../linux-g++/qplatformdefs.h"
diff --git a/package/qt6/qt6base/qt.conf.in b/package/qt6/qt6base/qt.conf.in
new file mode 100644
index 0000000000..d1d2d9490f
--- /dev/null
+++ b/package/qt6/qt6base/qt.conf.in
@@ -0,0 +1,11 @@
+[Paths]
+Prefix=/usr
+HostPrefix=@@HOST_DIR@@
+HostData=@@STAGING_DIR@@/usr
+Sysroot=@@STAGING_DIR@@
+SysrootifyPrefix=true
+TargetSpec=devices/linux-buildroot-g++
+ArchData=/usr/lib/qt6
+LibraryExecutables=/usr/lib/qt6/libexec
+Plugins=/usr/lib/qt6/plugins
+QmlImports=/usr/lib/qt6/qml
diff --git a/package/qt6/qt6base/qt6base.mk b/package/qt6/qt6base/qt6base.mk
index 01661b7f01..0329474172 100644
--- a/package/qt6/qt6base/qt6base.mk
+++ b/package/qt6/qt6base/qt6base.mk
@@ -436,5 +436,19 @@ define QT6BASE_RM_SBOMS
 endef
 QT6BASE_TARGET_FINALIZE_HOOKS += QT6BASE_RM_SBOMS
 
+define QT6BASE_MAKE_BR_SPEC
+	$(INSTALL) -m 0644 -D $(QT6BASE_PKGDIR)/qmake.conf \
+		$(@D)/mkspecs/devices/linux-buildroot-g++/qmake.conf
+	$(INSTALL) -m 0644 -D $(QT6BASE_PKGDIR)/qplatformdefs.h \
+		$(@D)/mkspecs/devices/linux-buildroot-g++/qplatformdefs.h
+endef
+
+QT6BASE_CONF_OPTS += \
+	-DQT_QMAKE_DEVICE_OPTIONS="CROSS_COMPILE=$(TARGET_CROSS);BR_COMPILER_CFLAGS=$(TARGET_CFLAGS);BR_COMPILER_CXXFLAGS=$(TARGET_CXXFLAGS)"
+
+QT6BASE_PRE_CONFIGURE_HOOKS += QT6BASE_MAKE_BR_SPEC
+
+QT6BASE_POST_INSTALL_STAGING_HOOKS += QT6_INSTALL_QT_CONF
+
 $(eval $(cmake-package))
 $(eval $(host-cmake-package))