ld: cannot find atomic when cross-compiling app with qmake

.........
LIBS          = $(SUBLIBS) -L/tmp/firmware/staging_sml723x/usr/lib -L../qmap_parser -lqmapparser /tmp/firmware/staging_sml723x/qt6_bmips4380/lib/libQt6Gui.so /tmp/firmware/staging_sml723x/qt6_bmips4380/lib/libQt6Core.so -latomic -lpthread atomic  -Wl,-rpath-link,/tmp/firmware/staging_sml723x/usr/lib
............

..........
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:20: LD_USES := LIBATOMIC
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:21: entering loop for nu 
over LIBATOMIC
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:21: loop iteration "LIBAT
OMIC"
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:21: entering block
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:22: NOT
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:22: evaluating test funct
ion "defined"
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:22: calling built-in defi
ned(QMAKE_LIBS_LIBATOMIC, var)
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:22: test function returne
d true
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:22: AND
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:23: skipped test function
 "error"
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:25: calling built-in $$ev
al(QMAKE_LIBDIR_LIBATOMIC)
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:25: QMAKE_LIBDIR := /tmp/
firmware/staging_sml723x/usr/lib
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:27: condition "android" i
s false
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:27: taking 'else' branch
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:27: entering block
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:31: condition "debug" is 
false
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:31: taking 'else' branch
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:31: entering block
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:34: calling built-in $$ev
al(QMAKE_LIBS_LIBATOMIC_RELEASE)
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:34: calling built-in $$ev
al(QMAKE_LIBS_LIBATOMIC)
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:34: LIBS := /tmp/firmware/staging_sml723x/qt6_bmips4380/lib/libQt6Core.so -lpthread atomic
DEBUG 1: /tmp/firmware/staging_sml723x/qt6_bmips4380/mkspecs/features/qmake_use.prf:34: leaving block, okey=true
............

QMAKE_PRL_BUILD_DIR = /tmp/firmware/build-sml723x/qtbase-6.2.0/src/corelib
QMAKE_PRL_TARGET = libQt6Core.so
QMAKE_PRL_CONFIG = shared
QMAKE_PRL_VERSION = 6.2.0
QMAKE_PRL_LIBS = -latomic
QMAKE_PRL_LIBS_FOR_CMAKE = -latomic

QMAKE_PRL_BUILD_DIR = /tmp/firmware/build-sml723x/qtbase-6.2.0/src/network
QMAKE_PRL_TARGET = libQt6Network.so
QMAKE_PRL_CONFIG = shared
QMAKE_PRL_VERSION = 6.2.0
QMAKE_PRL_LIBS = $$[QT_INSTALL_LIBS]/libQt6Core.so -latomic
QMAKE_PRL_LIBS_FOR_CMAKE = $$[QT_INSTALL_LIBS]/libQt6Core.so;-latomic

QT.core_private.VERSION = 6.2.0
QT.core_private.name = QtCore
QT.core_private.module =
QT.core_private.libs = $$QT_MODULE_LIB_BASE
QT.core_private.includes = $$QT_MODULE_INCLUDE_BASE/QtCore/6.2.0 $$QT_MODULE_INCLUDE_BASE/QtCore/6.2.0/QtCore
QT.core_private.frameworks = 
QT.core_private.depends = core
QT.core_private.uses = 
QT.core_private.module_config = v2 internal_module
QT.core_private.enabled_features = clock-gettime doubleconversion futimens glibc inotify linkat mimetype-database system-pcre2 poll_ppoll sha3-fast hijricalendar datetimeparser forkfd_pidfd pcre2 reduce_exports posix_fallocate alloca_h alloca system-zlib gui network printsupport sql testlib widgets xml dlopen relocatable cross_compile force_debug_info largefile enable_new_dtags
QT.core_private.disabled_features = system-doubleconversion futimes getauxval getentropy glib icu journald system-libb2 poll_pollts poll_poll poll_select qqnx_pps renameat2 slog2 statx syslog backtrace lttng etw android-style-assets gc_binaries use_bfd_linker use_gold_linker use_lld_linker private_tests debug reduce_relocations sse2 sse3 ssse3 sse4_1 sse4_2 avx f16c avx2 avx512f avx512er avx512cd avx512pf avx512dq avx512bw avx512vl avx512ifma avx512vbmi aesni rdrnd rdseed shani mips_dsp mips_dspr2 neon arm_crc32 arm_crypto alloca_malloc_h stack-protector-strong zstd dbus dbus-linked libudev intelcet
QMAKE_LIBS_LIBATOMIC = atomic
QMAKE_LIBS_LIBRT = 
QMAKE_INCDIR_PCRE2 = /tmp/firmware/staging_sml723x/usr/include
QMAKE_LIBS_PCRE2 = -L"/tmp/firmware/staging_sml723x/usr/lib" -lpcre2-16

$ find toolchain/mipsel-rtk-linux-uclibc/ -name *atomic.so*
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/lib/libatomic.so
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/lib/libatomic.so.1.2.0
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/lib/libatomic.so.1
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/sysroot/lib/libatomic.so
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/sysroot/lib/libatomic.so.1.2.0
toolchain/mipsel-rtk-linux-uclibc/mipsel-rtk-linux-uclibc/sysroot/lib/libatomic.so.1

sed 's/atomic/-latomic/' --in-place=.org $(QT_INSTALL_DIR)/mkspecs/modules/qt_lib_core_private.pri