From dbb7234b2a5e7d2cdb6658156de8d2d5b54033d7 Mon Sep 17 00:00:00 2001 From: Vasili Galka Date: Tue, 10 Jun 2014 16:14:56 +0300 Subject: x86: Enable 32-bit build using x86_64 multilib toolchain Until now building the x86 arch boards required 32-bit toolchain. As many x86_64 toolchains come with 32-bit support (multilib) that's a good idea to enable build with such toolchains. The change required was to specify the usage of 32-bit explicitly to the compiler and the linker (-m32 and -m elf_i386 flags) and locate the right libgcc path. Signed-off-by: Vasili Galka Acked-by: Simon Glass --- arch/x86/config.mk | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch/x86/config.mk') diff --git a/arch/x86/config.mk b/arch/x86/config.mk index 38cb7c93a5b..3106079c852 100644 --- a/arch/x86/config.mk +++ b/arch/x86/config.mk @@ -16,17 +16,18 @@ PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \ PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86) PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0 +PLATFORM_CPPFLAGS += -march=i386 -m32 # Support generic board on x86 __HAVE_ARCH_GENERIC_BOARD := y PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden -PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions +PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions -m elf_i386 LDFLAGS_FINAL += --gc-sections -pie LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3 -export NORMAL_LIBGCC = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +export NORMAL_LIBGCC = $(shell $(CC) $(PLATFORM_CPPFLAGS) -print-libgcc-file-name) CONFIG_USE_PRIVATE_LIBGCC := arch/x86/lib -- cgit v1.2.3