Re: [Bug 1885827] Re: building plugin failed on Windows with mingw

[Alex Bennée]

Xiaolei <1885827@bugs.launchpad.net> writes:

> If I keep "-Wl,-soname,$@" in the command , I got similar linking errors.
>  
> makefile: 
> SONAMES := $(addsuffix .dll,$(addprefix lib,$(NAMES)))
>
> QEMU_CFLAGS += -fPIC -fno-stack-protector -DBUILDING_DLL
> QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu
>
> all: $(SONAMES)
> lib%.dll: %.o
>     $(CC) -shared -Wl,-soname,$@ -o $@ $^ $(LDLIBS)
>
> output:
> x86_64-w64-mingw32-gcc -shared -Wl,-soname,libbb.dll -o libbb.dll bb.o
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  bb.o: in function `g_autoptr_cleanup_generic_gfree':
> C:/msys64/mingw64/include/glib-2.0/glib/glib-autocleanups.h:28: undefined 
> reference to `g_free'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  bb.o: in function `plugin_exit':
> C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:27: undefined reference to 
> `g_strdup_printf'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:29: undefined reference 
> to `qemu_plugin_outs'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  bb.o: in function `vcpu_tb_trans':
> C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:42: undefined reference to 
> `qemu_plugin_tb_n_insns'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:45: undefined reference 
> to `qemu_plugin_register_vcpu_tb_exec_inline'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:47: undefined reference 
> to `qemu_plugin_register_vcpu_tb_exec_inline'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:50: undefined reference 
> to `qemu_plugin_register_vcpu_tb_exec_cb'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  bb.o: in function `qemu_plugin_install':
> C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:64: undefined reference to 
> `qemu_plugin_register_vcpu_tb_trans_cb'
> C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
>  C:/QRS_Project/simdsp/qemu-4.2.0/tests/plugin/bb.c:65: undefined reference 
> to `qemu_plugin_register_atexit_cb'
> collect2.exe: error: ld returned 1 exit status

Cc'ing Emilio as he wrote the initial code so I assume built it at one point.

-- 
Alex Bennée