link spec [1][2] is empty on x86_64-elf-gcc, i.e. -m32 is not propogated to the linker as "-m elf_i386" and that causes the error: /usr/local/opt/x86_64-elf-binutils/bin/x86_64-elf-ld: i386 architecture of input file `x86/realmode.o' is incompatible with i386:x86-64 output 1. https://gcc.gnu.org/onlinedocs/gcc/Spec-Files.html 2. https://gcc.gnu.org/onlinedocs/gccint/Driver.html Cc: Cameron Esfahani <dirty@xxxxxxxxx> Signed-off-by: Roman Bolshakov <r.bolshakov@xxxxxxxxx> --- x86/Makefile.common | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/x86/Makefile.common b/x86/Makefile.common index 2ea9c9f..8230ac0 100644 --- a/x86/Makefile.common +++ b/x86/Makefile.common @@ -66,7 +66,8 @@ test_cases: $(tests-common) $(tests) $(TEST_DIR)/%.o: CFLAGS += -std=gnu99 -ffreestanding -I $(SRCDIR)/lib -I $(SRCDIR)/lib/x86 -I lib $(TEST_DIR)/realmode.elf: $(TEST_DIR)/realmode.o - $(CC) -m32 -nostdlib -o $@ -Wl,-T,$(SRCDIR)/$(TEST_DIR)/realmode.lds $^ + $(CC) -m32 -nostdlib -o $@ -Wl,-m,elf_i386 \ + -Wl,-T,$(SRCDIR)/$(TEST_DIR)/realmode.lds $^ $(TEST_DIR)/realmode.o: bits = 32 -- 2.26.1
