[qt6-static] needs -Wl,--start-group to link successfully

[pitti98]

Description / Steps to reproduce the issue

Try to do a qt6-static build of a (non-trivial) Qt application that builds fine with qt5-static (after #21612 has been fixed) and dynamically with qt5 and 6.

Expected behavior

Compiles and links successfully.

Actual behavior

Link step fails with unresolved externals:

D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/qt6-static/share/qt6/plugins/networkinformation/libqnetworklistmanager.a(qnetworklistmanagerevents.cpp.obj):(.text$_ZN25QNetworkListManagerEvents24checkBehindCaptivePortalEv+0x9b): undefined reference to `__imp_VariantInit'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/qt6-static/share/qt6/plugins/networkinformation/libqnetworklistmanager.a(qnetworklistmanagerevents.cpp.obj):(.text$_ZN25QNetworkListManagerEvents24checkBehindCaptivePortalEv+0xb1): undefined reference to `__imp_VariantClear'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/qt6-static/share/qt6/plugins/networkinformation/libqnetworklistmanager.a(qnetworklistmanagerevents.cpp.obj):(.text$_ZN25QNetworkListManagerEvents24checkBehindCaptivePortalEv+0x209): undefined reference to `__imp_VariantClear'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/qt6-static/share/qt6/plugins/networkinformation/libqnetworklistmanager.a(qnetworklistmanagerevents.cpp.obj):(.text$_ZN25QNetworkListManagerEvents24checkBehindCaptivePortalEv+0x27b): undefined reference to `__imp_VariantClear'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x18c): undefined reference to `gr_make_face_with_ops'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x226): undefined reference to `gr_face_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x386): undefined reference to `gr_face_featureval_for_lang'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x3a6): undefined reference to `gr_face_find_fref'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x3ba): undefined reference to `gr_fref_set_feature_value'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x45a): undefined reference to `gr_make_seg'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x472): undefined reference to `gr_seg_n_slots'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x5c7): undefined reference to `gr_seg_first_slot'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x617): undefined reference to `gr_slot_before'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x621): undefined reference to `gr_slot_after'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x62d): undefined reference to `gr_slot_gid'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x688): undefined reference to `gr_slot_can_insert_before'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x6ee): undefined reference to `gr_slot_origin_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x774): undefined reference to `gr_slot_next_in_segment'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x847): undefined reference to `gr_seg_first_slot'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x881): undefined reference to `gr_slot_advance_Y'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x89b): undefined reference to `gr_slot_next_in_segment'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x8af): undefined reference to `gr_slot_origin_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x8d2): undefined reference to `gr_slot_origin_Y'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x966): undefined reference to `gr_seg_advance_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0x9d6): undefined reference to `gr_slot_origin_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xa04): undefined reference to `gr_featureval_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xa0e): undefined reference to `gr_seg_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xacf): undefined reference to `gr_seg_advance_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xae3): undefined reference to `gr_seg_first_slot'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xb21): undefined reference to `gr_slot_advance_Y'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xb3b): undefined reference to `gr_slot_origin_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xb78): undefined reference to `gr_slot_origin_Y'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xb9b): undefined reference to `gr_slot_next_in_segment'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc19): undefined reference to `gr_featureval_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc31): undefined reference to `gr_featureval_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc3b): undefined reference to `gr_seg_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc55): undefined reference to `gr_seg_first_slot'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc5d): undefined reference to `gr_slot_origin_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc72): undefined reference to `gr_seg_advance_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xc94): undefined reference to `gr_seg_first_slot'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xcd0): undefined reference to `gr_featureval_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xcda): undefined reference to `gr_seg_destroy'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-graphite2.cc.obj):(.text+0xcf0): undefined reference to `gr_seg_advance_X'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libharfbuzz.a(hb-uniscribe.cc.obj):(.text+0x79d): undefined reference to `__imp_UuidCreate'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libfreetype.a(src_bzip2_ftbzip2.c.obj):(.text+0x6c): undefined reference to `BZ2_bzDecompressEnd'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libfreetype.a(src_bzip2_ftbzip2.c.obj):(.text+0x11d): undefined reference to `BZ2_bzDecompress'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libfreetype.a(src_bzip2_ftbzip2.c.obj):(.text+0x32a): undefined reference to `BZ2_bzDecompressEnd'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libfreetype.a(src_bzip2_ftbzip2.c.obj):(.text+0x380): undefined reference to `BZ2_bzDecompressInit'
D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/14.2.0/../../../../lib\libfreetype.a(src_bzip2_ftbzip2.c.obj):(.text+0x5fe): undefined reference to `BZ2_bzDecompressInit'
collect2.exe: error: ld returned 1 exit status

The project links fine if you add "QMAKE_LFLAGS += -Wl,--start-group" (except for the "missing --end-group;" warning)

I have only tested this on MINGW64, but it's possibly the same for the other subsystems.

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MINGW64_NT-10.0-19045

MINGW environments affected

• MINGW64
• MINGW32
• UCRT64
• CLANG64
• CLANG32
• CLANGARM64

Are you willing to submit a PR?

No response