QT5.14.x config TSLIB failed

[zwmasdf]

OS:Ubuntu18.04
toolchain:arm-linux-gnueabi-gcc V7.5.0 and arm-linux-gnueabi-g++ V7.5.0

TSLIB:1.21
tslib configure:

CC=arm-linux-gnueabi-gcc ./configure --prefix=/usr/arm-linux-gnueabi/ --host=arm-linux --enable-static --disable-shared --enable-input=static --enable-linear=static --enable-iir=static

qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf:

MAKEFILE_GENERATOR         = UNIX
CONFIG                    += incremental
QMAKE_INCREMENTAL_STYLE    = sublib

QMAKE_QPA_DEFAULT_PLATFORM = linuxfb #eglfs
QMAKE_CFLAGS_RELEASE      +=-O2 -march=armv7-a
QMAKE_CXXFLAGS_RELEASE    +=-O2 -march=armv7-a

include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)

# modifications to g++.conf
QMAKE_CC                = arm-linux-gnueabi-gcc
QMAKE_CXX               = arm-linux-gnueabi-g++
QMAKE_LINK              = arm-linux-gnueabi-g++
QMAKE_LINK_SHLIB        = arm-linux-gnueabi-g++

# modifications to linux.conf
QMAKE_AR                = arm-linux-gnueabi-ar cqs
QMAKE_OBJCOPY           = arm-linux-gnueabi-objcopy
QMAKE_NM                = arm-linux-gnueabi-nm -P
QMAKE_STRIP             = arm-linux-gnueabi-strip
load(qt_config)

QT configure:

./configure \
-v \
-prefix /home/zwmasdf/QtArm/QtRelease \
-release \
-opensource \
-confirm-license \
-nomake examples \
-nomake tests \
-nomake tools \
-no-compile-examples \
-xplatform linux-arm-gnueabi-g++ \
-optimized-qmake \
-pch \
-qt-zlib \
-no-opengl \
-no-sse2 \
-no-openssl \
-no-cups \
-no-glib \
-no-pkg-config \
-no-separate-debug-info \
-make libs \
-accessibility \
-no-iconv \
-qt-libjpeg \
-qt-libpng \
-qt-freetype \
-evdev \
-tslib \
-skip qtactiveqt \
-skip qtcharts \
-skip qtconnectivity \
-skip qtdeclarative \
-skip qtdoc \
-skip qtgamepad \
-skip qtgraphicaleffects \
-skip qtimageformats \
-skip qtlocation \
-skip qtmultimedia \
-skip qtnetworkauth \
-skip qtpurchasing \
-skip qtquickcontrols \
-skip qtquickcontrols2 \
-skip qtremoteobjects \
-skip qtscript \
-skip qtscxml \
-skip qtsensors \
-skip qtserialbus \
-skip qtserialport \
-skip qtspeech \
-skip qtsvg \
-skip qttools \
-skip qttranslations \
-skip qtvirtualkeyboard \
-skip qtwayland \
-skip qtwebchannel \
-skip qtwebengine \
-skip qtwebsockets \
-skip qtwebview \
-skip qtxmlpatterns

I have skipped some modules in order to configure more faster
Then I found when Qt Version < 5.14, it configured success
But in 5.14.0 or 5.14.1, it configured failed
It says:

ERROR: Feature 'tslib' was enabled, but the pre-condition 'libs.tslib' failed.

Here is the config log in Qt 5.14.0, "对‘XXX’未定义的引用" means Undefined reference to 'XXX':

Trying source 0 (type inline) of library tslib ...
+ cd /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/config.tests/tslib && /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" -early "CONFIG += cross_compile" 'QMAKE_USE += tslib' 'QMAKE_LIBS_TSLIB = -lts' /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/config.tests/tslib
+ cd /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/config.tests/tslib && MAKEFLAGS= /usr/bin/make
> arm-linux-gnueabi-g++ -c -pipe -O2 -march=armv7-a -O2 -march=armv7-a -O2 -w -fPIC  -I. -I/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/linux-arm-gnueabi-g++ -o main.o main.cpp
> arm-linux-gnueabi-g++ -Wl,-O1 -o tslib main.o   -lts   
> /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/lib/../lib/libts.a(ts_close.o)：在函数‘ts_close’中：
> ts_close.c:(.text+0x44)：对‘dlclose’未定义的引用
> /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/lib/../lib/libts.a(ts_config.o)：在函数‘ts_reconfig’中：
> ts_config.c:(.text+0x448)：对‘dlclose’未定义的引用
> /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/lib/../lib/libts.a(ts_load_module.o)：在函数‘__ts_load_module_shared’中：
> ts_load_module.c:(.text+0x80)：对‘dlopen’未定义的引用
> ts_load_module.c:(.text+0x94)：对‘dlsym’未定义的引用
> ts_load_module.c:(.text+0xf4)：对‘dlclose’未定义的引用
> ts_load_module.c:(.text+0x104)：对‘dlclose’未定义的引用
> /usr/lib/gcc-cross/arm-linux-gnueabi/7/../../../../arm-linux-gnueabi/lib/../lib/libts.a(ts_load_module.o)：在函数‘__ts_load_module’中：
> ts_load_module.c:(.text+0x1e0)：对‘dlclose’未定义的引用
> collect2: error: ld returned 1 exit status
> Makefile:67: recipe for target 'tslib' failed
> make: *** [tslib] Error 1
 => source failed verification.

I guess libdl can't link with tslib in QT 5.14.x, I tried to add "-ldl":
add -ldl in qmake.conf as below:

QMAKE_LIBS_LIBDL = -ldl
QMAKE_USE += libdl

Then I delete topdir/config.tests,config.cache,config.log,config.opt,.config.notes,.qmake.*,and tried configure again,but it still the same error
I opened config.tests/Makefile,found it has linked with "-ldl":

#############################################################################
# Makefile for building: tslib
# Generated by qmake (3.1) (Qt 5.14.0)
# Project:  tslib.pro
# Template: app
# Command: /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/bin/qmake -o Makefile tslib.pro 'CONFIG -= qt debug_and_release app_bundle lib_bundle' 'CONFIG += shared warn_off console single_arch' -early 'CONFIG += cross_compile' 'QMAKE_USE += tslib' 'QMAKE_LIBS_TSLIB = -lts'
#############################################################################

MAKEFILE      = Makefile

EQ            = =

####### Compiler, tools and options

CC            = arm-linux-gnueabi-gcc
CXX           = arm-linux-gnueabi-g++
DEFINES       = 
CFLAGS        = -pipe -O2 -march=armv7-a -O2 -w -fPIC $(DEFINES)
CXXFLAGS      = -pipe -O2 -march=armv7-a -O2 -march=armv7-a -O2 -w -fPIC $(DEFINES)
INCPATH       = -I. -I/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/linux-arm-gnueabi-g++
QMAKE         = /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/bin/qmake
DEL_FILE      = rm -f
CHK_DIR_EXISTS= test -d
MKDIR         = mkdir -p
COPY          = cp -f
COPY_FILE     = cp -f
COPY_DIR      = cp -f -R
INSTALL_FILE  = install -m 644 -p
INSTALL_PROGRAM = install -m 755 -p
INSTALL_DIR   = cp -f -R
QINSTALL      = /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/bin/qmake -install qinstall
QINSTALL_PROGRAM = /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/bin/qmake -install qinstall -exe
DEL_FILE      = rm -f
SYMLINK       = ln -f -s
DEL_DIR       = rmdir
MOVE          = mv -f
TAR           = tar -cf
COMPRESS      = gzip -9f
DISTNAME      = tslib1.0.0
DISTDIR = /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/config.tests/tslib/.tmp/tslib1.0.0
LINK          = arm-linux-gnueabi-g++
LFLAGS        = -Wl,-O1
LIBS          = $(SUBLIBS) -ldl -lts   
AR            = arm-linux-gnueabi-ar cqs
RANLIB        = 
SED           = sed
STRIP         = arm-linux-gnueabi-strip

####### Output directory

OBJECTS_DIR   = ./

####### Files

SOURCES       = main.cpp 
OBJECTS       = main.o
DIST          = tslib.pro  main.cpp
QMAKE_TARGET  = tslib
DESTDIR       = 
TARGET        = tslib


first: all
####### Build rules

tslib:  $(OBJECTS)  
	$(LINK) $(LFLAGS) -o $(TARGET) $(OBJECTS) $(OBJCOMP) $(LIBS)

Makefile: tslib.pro ../.qmake.cache /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf /home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/spec_pre.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/unix.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/linux.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/sanitize.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/gcc-base.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/gcc-base-unix.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/g++-base.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/g++-unix.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/qconfig.pri \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qt_functions.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qt_config.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/spec_post.prf \
		../.qmake.cache \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/.qmake.stash \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/exclusive_builds.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/toolchain.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/default_pre.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/resolve_config.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/default_post.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/warn_off.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qmake_use.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/file_copies.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/testcase_targets.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/exceptions.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/yacc.prf \
		/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/lex.prf \
		tslib.pro
	$(QMAKE) -o Makefile tslib.pro 'CONFIG -= qt debug_and_release app_bundle lib_bundle' 'CONFIG += shared warn_off console single_arch' -early 'CONFIG += cross_compile' 'QMAKE_USE += tslib' 'QMAKE_LIBS_TSLIB = -lts'
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/spec_pre.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/unix.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/linux.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/sanitize.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/gcc-base.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/gcc-base-unix.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/g++-base.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/common/g++-unix.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/qconfig.pri:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qt_functions.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qt_config.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/spec_post.prf:
../.qmake.cache:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/.qmake.stash:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/exclusive_builds.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/toolchain.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/default_pre.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/resolve_config.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/default_post.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/warn_off.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/qmake_use.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/file_copies.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/testcase_targets.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/exceptions.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/yacc.prf:
/home/zwmasdf/QtArm/qt-everywhere-src-5.14.0/qtbase/mkspecs/features/lex.prf:
tslib.pro:
qmake: FORCE
	@$(QMAKE) -o Makefile tslib.pro 'CONFIG -= qt debug_and_release app_bundle lib_bundle' 'CONFIG += shared warn_off console single_arch' -early 'CONFIG += cross_compile' 'QMAKE_USE += tslib' 'QMAKE_LIBS_TSLIB = -lts'

qmake_all: FORCE


all: Makefile tslib

dist: distdir FORCE
	(cd `dirname $(DISTDIR)` && $(TAR) $(DISTNAME).tar $(DISTNAME) && $(COMPRESS) $(DISTNAME).tar) && $(MOVE) `dirname $(DISTDIR)`/$(DISTNAME).tar.gz . && $(DEL_FILE) -r $(DISTDIR)

distdir: FORCE
	@test -d $(DISTDIR) || mkdir -p $(DISTDIR)
	$(COPY_FILE) --parents $(DIST) $(DISTDIR)/


clean: compiler_clean 
	-$(DEL_FILE) $(OBJECTS)
	-$(DEL_FILE) *~ core *.core


distclean: clean 
	-$(DEL_FILE) $(TARGET) 
	-$(DEL_FILE) Makefile


####### Sub-libraries

check: first

benchmark: first

compiler_yacc_decl_make_all:
compiler_yacc_decl_clean:
compiler_yacc_impl_make_all:
compiler_yacc_impl_clean:
compiler_lex_make_all:
compiler_lex_clean:
compiler_clean: 

####### Compile

main.o: main.cpp 
	$(CXX) -c $(CXXFLAGS) $(INCPATH) -o main.o main.cpp

####### Install

install:  FORCE

uninstall:  FORCE

FORCE:

However the error is the same,how to fix this problem?