x86: Makefile: Fix linkage of realmode on x86_64-elf binutils
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@apple.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20200901085056.33391-4-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/x86/Makefile.common b/x86/Makefile.common
index c3f7dc4..090ce22 100644
--- a/x86/Makefile.common
+++ b/x86/Makefile.common
@@ -69,7 +69,8 @@
$(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
