You should then find out why libqemu_plugin.dll.a is not working. It is possible though that your linked is calling the import library something else, for instance adding a .dll extension to it.
You will have to run a few tests with your linker (I'd just use the examples from the stackoverflow links I posted above) to see the name of the import library that gets created. My assumption is that some library gets created, otherwise the linked should give you an error and AFAICT it does not. Once you find what the import library us, you should be in good shape to adapt the above for QEMU. Let us know how it goes! -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1885827 Title: building plugin failed on Windows with mingw Status in QEMU: New Bug description: I want to build QEMU 4.2.0's plugin module on Windows 7/10 with Mingw, but the building process faild. The step I follow is listed below: 1. create "dsp_build" diretory under source file folder 2. change directory to dsp_build , and run ../configure --target-list=dsp-softmmu --cross-prefix=x86_64-w64-mingw32- --enable-gtk --enable-sdl --enable-debug --enable-plugins 3. build qemu project 4. switch dir to /dsp_build, make -C tests/plugin, yeilds error: CC bb.o D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:17:24: error: variable 'qemu_plugin_version' definition is marked dllimport 17 | QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; | ^~~~~~~~~~~~~~~~~~~ D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:17:24: warning: 'qemu_plugin_version' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes] D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c: In function 'vcpu_tb_exec': D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:33:29: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 33 | unsigned long n_insns = (unsigned long)udata; | ^ D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c: In function 'vcpu_tb_trans': D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:51:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 51 | (void *)n_insns); 5. Then , I modified the QEMU_flags and the compilation command arguments($(CC) ..) in the makefile : BUILD_DIR := $(CURDIR)/../.. include $(BUILD_DIR)/config-host.mak include $(SRC_PATH)/rules.mak $(call set-vpath, $(SRC_PATH)/tests/plugin) NAMES := NAMES += bb NAMES += empty NAMES += insn NAMES += mem NAMES += hotblocks NAMES += howvec NAMES += hotpages SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES))) QEMU_CFLAGS += -fPIC -DBUILDING_DLL #added -DBUILDING_DLL QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu all: $(SONAMES) lib%.so: %.o $(CC) -fPIC -shared -o $@ $^ $(LDLIBS) -L /c/msys64/mingw64/lib/ -lglib-2.0 # original cmd: $(CC) -shared -Wl,-soname,$@ -o $@ $^ $(LDLIBS) clean: rm -f *.o *.so *.d rm -Rf .libs .PHONY: all clean 6. Executing make yeilds: make: enter “/d/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/build_dsp/tests/plugin” CC bb.o x86_64-w64-mingw32-gcc -fPIC -shared -o libbb.so bb.o -L /c/msys64/mingw64/lib/ -lglib-2.0 C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: bb.o: in function `plugin_exit': D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:28: undefined reference to `qemu_plugin_outs' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:29: undefined reference to `__stack_chk_fail' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: bb.o: in function `vcpu_tb_trans': D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:41: undefined reference to `qemu_plugin_tb_n_insns' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:44: undefined reference to `qemu_plugin_register_vcpu_tb_exec_inline' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:46: undefined reference to `qemu_plugin_register_vcpu_tb_exec_inline' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:49: undefined reference to `qemu_plugin_register_vcpu_tb_exec_cb' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: bb.o: in function `qemu_plugin_install': D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:63: undefined reference to `qemu_plugin_register_vcpu_tb_trans_cb' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/emu_devl/qemu_src/qemu-sr-dsp-a/qemu_tidsp_c3x/tests/plugin/bb.c:64: undefined reference to `qemu_plugin_register_atexit_cb' C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: bb.o:bb.c:(.rdata$.refptr.__stack_chk_guard[.refptr.__stack_chk_guard]+0x0): undefined reference to `__stack_chk_guard' collect2.exe: error: ld returned 1 exit status It looks like linking problem(fail to link functions defined in api.c, core.c...), but I have no idea what goes wrong. If I mannualy add api.o, core.o in the compilation command, still get error like undefined reference to '__stack_chk_guard'. My collegue can build 4.2.0 plugins on Ubuntu Linux without any problem. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1885827/+subscriptions