linux-kernel - Re: [PATCH 01/12] selftests/x86: Extend Makefile to allow 64-bit only tests

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Date:	Tue, 8 Dec 2015 10:34:07 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Andy Lutomirski <luto@...nel.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Brian Gerst <brgerst@...il.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 01/12] selftests/x86: Extend Makefile to allow 64-bit
 only tests

On Mon, Dec 07, 2015 at 01:51:26PM -0800, Andy Lutomirski wrote:
> There aren't any yet, but there might be a few some day.
> 
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> ---
>  tools/testing/selftests/x86/Makefile | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
> index 389701f59940..a460fe7c5365 100644
> --- a/tools/testing/selftests/x86/Makefile
> +++ b/tools/testing/selftests/x86/Makefile
> @@ -8,8 +8,9 @@ TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs ldt_gdt syscall_nt ptr
>  TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn test_syscall_vdso unwind_vdso
>  
>  TARGETS_C_32BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_32BIT_ONLY)
> +TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHBITS) $(TARGETS_C_64BIT_ONLY)
>  BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
> -BINARIES_64 := $(TARGETS_C_BOTHBITS:%=%_64)
> +BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
>  
>  CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
>  
> @@ -37,7 +38,7 @@ clean:
>  $(TARGETS_C_32BIT_ALL:%=%_32): %_32: %.c
>  	$(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
>  
> -$(TARGETS_C_BOTHBITS:%=%_64): %_64: %.c
> +$(TARGETS_C_64BIT_ALL:%=%_64): %_64: %.c
>  	$(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl
>  
>  # x86_64 users should be encouraged to install 32-bit libraries
> -- 

It doesn't build some of the tests here if I run make in the x86 dir.
This is unrelated but maybe for the future we should add some feature
testing like perf tool does to warn people if stuff is missing on the
system...

$ cd tools/testing/selftests/x86
$ make
gcc -m32 -o single_step_syscall_32 -O2 -g -std=gnu99 -pthread -Wall  single_step_syscall.c -lrt -ldl -lm
gcc -m32 -o sysret_ss_attrs_32 -O2 -g -std=gnu99 -pthread -Wall  sysret_ss_attrs.c -lrt -ldl -lm
gcc -m32 -o ldt_gdt_32 -O2 -g -std=gnu99 -pthread -Wall  ldt_gdt.c -lrt -ldl -lm
gcc -m32 -o syscall_nt_32 -O2 -g -std=gnu99 -pthread -Wall  syscall_nt.c -lrt -ldl -lm
gcc -m32 -o ptrace_syscall_32 -O2 -g -std=gnu99 -pthread -Wall  ptrace_syscall.c raw_syscall_helper_32.S -lrt -ldl -lm
gcc -m32 -o entry_from_vm86_32 -O2 -g -std=gnu99 -pthread -Wall  entry_from_vm86.c -lrt -ldl -lm
gcc -m32 -o syscall_arg_fault_32 -O2 -g -std=gnu99 -pthread -Wall  syscall_arg_fault.c -lrt -ldl -lm
gcc -m32 -o sigreturn_32 -O2 -g -std=gnu99 -pthread -Wall  sigreturn.c -lrt -ldl -lm
gcc -m32 -o test_syscall_vdso_32 -O2 -g -std=gnu99 -pthread -Wall  test_syscall_vdso.c thunks_32.S -lrt -ldl -lm
In file included from ptrace_syscall.c:6:0:
/usr/include/sys/syscall.h:24:24: fatal error: asm/unistd.h: No such file or directory
compilation terminated.
In file included from entry_from_vm86.c:14:0:
/usr/include/sys/syscall.h:24:24: fatal error: asm/unistd.h: No such file or directory
compilation terminated.
...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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