Re: [Xen-devel] Intermittent issues compiling Xen kernel after d4ae1c

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 26.04.16 at 16:34, <roger.pau@xxxxxxxxxx> wrote:
> I seem to be having some issues compiling the Xen kernel after d4ae1c, those 
> 
> are intermittent AFAICT, and sometimes I manage to finish compiling Xen just 
> fine, but others I get the following error:

So far reports like this were always due to CFLAGS being defined in
the environment before invoking make.

Jan

> gmake[5]: Leaving directory '/root/xen-dis/xen/arch/x86/boot'
> clang -B/usr/local/bin -D__ASSEMBLY__ -include 
> /root/xen-dis/xen/include/xen/config.h -no-integrated-as -O1 
> -fno-omit-frame-pointer -m64 -g -fno-strict-aliasing -Wall 
> -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-local-typedefs 
> -I/root/xen-dis/xen/include -I/root/xen-dis/xen/include/asm-x86/mach-generic 
> -I/root/xen-dis/xen/include/asm-x86/mach-default 
> '-D__OBJECT_LABEL__=ooten_disenooten_disenen' -msoft-float 
> -fno-stack-protector -fno-exceptions -Wnested-externs -DHAVE_GAS_VMX 
> -DHAVE_GAS_EPT -DHAVE_GAS_FSGSBASE -U__OBJECT_LABEL__ -DHAVE_GAS_QUOTED_SYM 
> '-D__OBJECT_LABEL__=/root/xen-dis/xen//root/xen-dis/xen/xen' -mno-red-zone 
> -mno-sse -fpic -fno-asynchronous-unwind-tables 
> -DGCC_HAS_VISIBILITY_ATTRIBUTE -nostdinc -fno-builtin -fno-common -Werror 
> -Wredundant-decls -Wno-pointer-arith -pipe -g -D__XEN__ -include 
> /root/xen-dis/xen/include/xen/config.h 
> '-D__OBJECT_FILE__="/root/xen-dis/xen/xen"' -Wno-parentheses -Wno-format 
> -Wno-unused-value -DVERBOSE -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER 
> -MMD -MF /root/xen-dis/xen/.xen.d -Wno-parentheses -Wno-format 
> -Wno-unused-value -O1 -fno-omit-frame-pointer -m64 -g -fno-strict-aliasing 
> -Wall -Wstrict-prototypes -Wdeclaration-after-statement 
> -Wno-unused-local-typedefs -D__ASSEMBLY__ -include 
> /root/xen-dis/xen/include/xen/config.h -no-integrated-as -O1 
> -fno-omit-frame-pointer -m64 -g -fno-strict-aliasing -Wall 
> -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-local-typedefs 
> -I/root/xen-dis/xen/include -I/root/xen-dis/xen/include/asm-x86/mach-generic 
> -I/root/xen-dis/xen/include/asm-x86/mach-default 
> '-D__OBJECT_LABEL__=arch86$rooten_disenrch86ootuilt_in.o' -msoft-float 
> -fno-stack-protector -fno-exceptions -Wnested-externs -DHAVE_GAS_VMX 
> -DHAVE_GAS_EPT -DHAVE_GAS_FSGSBASE -U__OBJECT_LABEL__ -DHAVE_GAS_QUOTED_SYM 
> '-D__OBJECT_LABEL__=arch/x86//root/xen-dis/xen/arch/x86/boot/built_in.o' 
> -mno-red-zone -mno-sse -fpic -fno-asynchronous-unwind-tables 
> -DGCC_HAS_VISIBILITY_ATTRIBUTE -nostdinc -fno-builtin -fno-common -Werror 
> -Wredundant-decls -Wno-pointer-arith -pipe -g -D__XEN__ -include 
> /root/xen-dis/xen/include/xen/config.h 
> '-D__OBJECT_FILE__="/root/xen-dis/xen/arch/x86/boot/built_in.o"' 
> -Wno-parentheses -Wno-format -Wno-unused-value -DVERBOSE 
> -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER -MMD -MF 
> /root/xen-dis/xen/arch/x86/boot/.built_in.o.d -D__ASSEMBLY__ -include 
> /root/xen-dis/xen/include/xen/config.h -no-integrated-as -O1 
> -fno-omit-frame-pointer -m64 -g -fno-strict-aliasing -Wall 
> -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-local-typedefs 
> -I/root/xen-dis/xen/include -I/root/xen-dis/xen/include/asm-x86/mach-generic 
> -I/root/xen-dis/xen/include/asm-x86/mach-default 
> '-D__OBJECT_LABEL__=arch$x86$boot$head.o' -msoft-float -fno-stack-protector 
> -fno-exceptions -Wnested-externs -DHAVE_GAS_VMX -DHAVE_GAS_EPT 
> -DHAVE_GAS_FSGSBASE -U__OBJECT_LABEL__ -DHAVE_GAS_QUOTED_SYM 
> '-D__OBJECT_LABEL__=arch/x86/boot/head.o' -mno-red-zone -mno-sse -fpic 
> -fno-asynchronous-unwind-tables -DGCC_HAS_VISIBILITY_ATTRIBUTE -nostdinc 
> -fno-builtin -fno-common -Werror -Wredundant-decls -Wno-pointer-arith -pipe 
> -g -D__XEN__ -include /root/xen-dis/xen/include/xen/config.h 
> '-D__OBJECT_FILE__="head.o"' -Wno-parentheses -Wno-format -Wno-unused-value 
> -DVERBOSE -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER -MMD -MF 
> ./.head.o.d -c head.S -o head.o
> <built-in>:328:9: error: '__OBJECT_LABEL__' macro redefined 
> [-Werror,-Wmacro-redefined]
> #define __OBJECT_LABEL__ arch86$rooten_disenrch86ootuilt_in.o
>         ^
> <built-in>:321:9: note: previous definition is here
> #define __OBJECT_LABEL__ /root/xen-dis/xen//root/xen-dis/xen/xen
>         ^
> <built-in>:337:9: error: '__OBJECT_FILE__' macro redefined 
> [-Werror,-Wmacro-redefined]
> #define __OBJECT_FILE__ "/root/xen-dis/xen/arch/x86/boot/built_in.o"
>         ^
> <built-in>:324:9: note: previous definition is here
> #define __OBJECT_FILE__ "/root/xen-dis/xen/xen"
>         ^
> <built-in>:341:9: error: '__OBJECT_LABEL__' macro redefined 
> [-Werror,-Wmacro-redefined]
> #define __OBJECT_LABEL__ arch$x86$boot$head.o
>         ^
> <built-in>:334:9: note: previous definition is here
> #define __OBJECT_LABEL__ arch/x86//root/xen-dis/xen/arch/x86/boot/built_in.o
>         ^
> <built-in>:350:9: error: '__OBJECT_FILE__' macro redefined 
> [-Werror,-Wmacro-redefined]
> #define __OBJECT_FILE__ "head.o"
>         ^
> <built-in>:337:9: note: previous definition is here
> #define __OBJECT_FILE__ "/root/xen-dis/xen/arch/x86/boot/built_in.o"
>         ^
> 4 errors generated.
> /root/xen-dis/xen/Rules.mk:176: recipe for target 'head.o' failed
> gmake[4]: *** [head.o] Error 1
> gmake[4]: Leaving directory '/root/xen-dis/xen/arch/x86/boot'
> /root/xen-dis/xen/Rules.mk:161: recipe for target 
> '/root/xen-dis/xen/arch/x86/boot/built_in.o' failed
> gmake[3]: *** [/root/xen-dis/xen/arch/x86/boot/built_in.o] Error 2
> gmake[3]: Leaving directory '/root/xen-dis/xen/arch/x86'
> Makefile:124: recipe for target '/root/xen-dis/xen/xen' failed
> gmake[2]: *** [/root/xen-dis/xen/xen] Error 2
> gmake[2]: Leaving directory '/root/xen-dis/xen'
> Makefile:45: recipe for target 'install' failed
> gmake[1]: *** [install] Error 2
> gmake[1]: Leaving directory '/root/xen-dis/xen'
> Makefile:97: recipe for target 'install-xen' failed
> gmake: *** [install-xen] Error 2
> 
> The compiler command line in this case is clearly wrong, but I'm not able to 
> 
> spot why this happens (and why it's intermittent). In this case the 
> compilation was performed with clang, but I've seen the same when using gcc, 
> 
> and I believe this is somehow related to GNU make itself rather than the 
> compiler used. The version of GNU make used is 4.1.
> 
> I've also tried with -j1 and -j4, all leading to the same results.
> 
> Roger.



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