[Xen-devel] Clang/LLVM version requirements

[Jeffrey Karrels <karrelsj@xxxxxxxxx>]

Is there a required Clang and LLVM version one needs to do a 'make
xen-dist clang=y'?

I recently tried and the process failed. I haven't begun debugging as
I figured I would ask the obvious first. The build failed with the
following:

...
make[4]: Entering directory `/home/builder/xen-unstable/xen/drivers'
make -f /home/builder/xen-unstable/xen/Rules.mk -C char built_in.o
make[5]: Entering directory `/home/builder/xen-unstable/xen/drivers/char'
clang -O1 -fno-omit-frame-pointer -m64 -g -fno-strict-aliasing
-std=gnu99 -Wall -Wstrict-prototypes -Wdeclaration-after-statement
-fno-builtin -fno-common -Wredundant-decls -iwithprefix include
-Werror -Wno-pointer-arith -pipe
-I/home/builder/xen-unstable/xen/include
-I/home/builder/xen-unstable/xen/include/asm-x86/mach-generic
-I/home/builder/xen-unstable/xen/include/asm-x86/mach-default
-msoft-float -fno-stack-protector -fno-exceptions -Wnested-externs
-mno-red-zone -mno-sse -fpic -fno-asynchronous-unwind-tables
-DGCC_HAS_VISIBILITY_ATTRIBUTE -Wno-parentheses -Wno-format
-Wno-unused-value -g -D__XEN__ -include
/home/builder/xen-unstable/xen/include/xen/config.h -DVERBOSE
-DHAS_ACPI -DHAS_GDBSX -DHAS_PASSTHROUGH -fno-omit-frame-pointer
-DCONFIG_FRAME_POINTER -MMD -MF .console.o.d -c console.c -o console.o
...
"error in backend: Invalid operand for inline asm constraint 'i'!"

Here are my details:
[builder@xenbuild1 xen-unstable]$ uname -a
Linux xenbuild1.cyberlab 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6
19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux

[builder@xenbuild1 xen-unstable]$ hg summary
parent: 25813:9dc729b75595 tip

[builder@xenbuild1 char]$ clang -v
clang version 2.8 (branches/release_28)
Target: x86_64-redhat-linux-gnu
Thread model: posix

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