diff -uNr qtbase/mkspecs/termux/qmake.conf qtbase.mod/mkspecs/termux/qmake.conf
--- qtbase/mkspecs/termux/qmake.conf	1970-01-01 03:00:00.000000000 +0300
+++ qtbase.mod/mkspecs/termux/qmake.conf	2018-09-21 16:26:18.042253449 +0300
@@ -0,0 +1,31 @@
+QT_QPA_DEFAULT_PLATFORM = xcb
+
+MAKEFILE_GENERATOR      = UNIX
+CONFIG                 += incremental
+QMAKE_INCREMENTAL_STYLE = sublib
+
+include(../common/linux.conf)
+include(../common/gcc-base-unix.conf)
+include(../common/clang.conf)
+
+QMAKE_CC                = clang
+QMAKE_CXX               = clang++
+QMAKE_LINK              = $${QMAKE_CXX}
+QMAKE_LINK_SHLIB        = $${QMAKE_CXX}
+QMAKE_AR                = ar cqs
+QMAKE_NM                = nm -P
+QMAKE_OBJCOPY           = objcopy
+QMAKE_PKG_CONFIG        = pkg-config
+QMAKE_STRIP             = strip
+
+QMAKE_CFLAGS           += -I@TERMUX_PREFIX@/include
+QMAKE_CXXFLAGS         += -I@TERMUX_PREFIX@/include
+QMAKE_LFLAGS           += -L@TERMUX_PREFIX@/lib
+QMAKE_LFLAGS_SHLIB     += -shared
+QMAKE_LFLAGS_PLUGIN    += -shared
+
+## Should be -lpthread, but Termux does not provide
+## libpthread.so library.
+QMAKE_LIBS_THREAD       =
+
+load(qt_config)