From: Jeff Dike Date: Fri, 30 Jun 2006 08:55:58 +0000 (-0700) Subject: [PATCH] uml: fix biarch gcc build on x86_64 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ff23db5373f66a818c296f4d58adaaa10f515fd3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [PATCH] uml: fix biarch gcc build on x86_64 I run an x86_64 kernel with i386 userspace (Ubuntu Dapper) and decided to try out UML today. I found that UML wasn't quite aware of biarch compilers (which Ubuntu i386 ships). A fix similar to what was done for x86_64 should probably be committed (see http://marc.theaimsgroup.com/?l=linux-kernel&m=113425940204010&w=2). Without the FLAGS changes, the build will fail at a number of places and without the LINK change, the final link will fail. Signed-off-by: Nishanth Aravamudan Cc: Paolo 'Blaisorblade' Giarrusso Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64 index dfd88b652fb..dffd1184c95 100644 --- a/arch/um/Makefile-x86_64 +++ b/arch/um/Makefile-x86_64 @@ -6,9 +6,11 @@ START := 0x60000000 #We #undef __x86_64__ for kernelspace, not for userspace where #it's needed for headers to work! -CFLAGS += -U__$(SUBARCH)__ -fno-builtin -USER_CFLAGS += -fno-builtin +CFLAGS += -U__$(SUBARCH)__ -fno-builtin -m64 +USER_CFLAGS += -fno-builtin -m64 CHECKFLAGS += -m64 +AFLAGS += -m64 +LDFLAGS += -m elf_x86_64 ELF_ARCH := i386:x86-64 ELF_FORMAT := elf64-x86-64 @@ -16,3 +18,4 @@ ELF_FORMAT := elf64-x86-64 # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example. LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64 +LINK-y += -m64 diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S index 1660a769674..0a7d50ff9a4 100644 --- a/arch/um/kernel/vmlinux.lds.S +++ b/arch/um/kernel/vmlinux.lds.S @@ -1,4 +1,6 @@ #include +/* in case the preprocessor is a 32bit one */ +#undef i386 #ifdef CONFIG_LD_SCRIPT_STATIC #include "uml.lds.S" #else