GCC：输入文件“ ../window.ui.o”的i386体系结构与i386：x86-64输出不兼容

Question

I'm trying to embed a file called window.ui into my C executable, with the goal to access the contents later from within the code:

objcopy --input binary \
        --output elf32-i386 \
        --binary-architecture i386 ../src/window.ui ../window.ui.o

gcc `pkg-config --cflags gtk+-3.0` \
    ../src/*.c \
    ../*.o \
    `pkg-config --libs gtk+-3.0` \
    -o ../a.out

When compiling, GCC fails with the following error:

/usr/bin/x86_64-linux-gnu-ld: i386 architecture of input file `../window.ui.o' is incompatible with i386:x86-64 output
collect2: error: ld returned 1 exit status

Is there any way to force GCC to still include the file?

I've also tried the objcopy with --output elf64-x86-64 , and this compiles correctly however the contents are garbled up when reading.

---

Original guide which inspired me

Answer 1

"solved" by using gnu-ld instead:

ld -r -b binary ../src/window.ui -o ../window.ui.o

Couldn't figure out why objcopy didn't work though.