Re: [Xen-devel] Xen 4.1.0 RC2 released,

[Nathan March <nathan@xxxxxx>]

On 1/29/2011 2:45 AM, Ian Campbell wrote:
> I just built Xen with the following patch and it didn't break on a
> Debian system (i.e. without as-needed enabled by default). Can you try
> it in your environment?
Initially failed with:

ld -Wl,--no-as-needed   -melf_x86_64 -r -o built_in.o head.o
ld: unrecognized option '-Wl,--no-as-needed'
ld: use the --help option for usage information

Adjusted the patch to have a space instead of a comma between params and 
I get:
gcc -D__ASSEMBLY__ -O1 -fno-omit-frame-pointer 
-fno-optimize-sibling-calls -m64 -g -fno-strict-aliasing -Wall 
-Wstrict-prototypes -Wno-unused-value -Wdeclaration-after-statement 
-nostdinc -fno-builtin -fno-common -Wredundant-decls -iwithprefix 
include -Werror -Wno-pointer-arith -pipe 
-I/var/home/xen41/xen-unstable.hg/xen/include 
-I/var/home/xen41/xen-unstable.hg/xen/include/asm-x86/mach-generic 
-I/var/home/xen41/xen-unstable.hg/xen/include/asm-x86/mach-default 
-msoft-float -fno-stack-protector -fno-exceptions -mno-red-zone -fpic 
-fno-asynchronous-unwind-tables -DGCC_HAS_VISIBILITY_ATTRIBUTE -g 
-D__XEN__ -DVERBOSE -fno-omit-frame-pointer -DCONFIG_FRAME_POINTER -MMD 
-MF .head.o.d -c head.S -o head.o
ld -Wl --no-as-needed   -melf_x86_64 -r -o built_in.o head.o
ld: unrecognized option '-Wl'
ld: use the --help option for usage information

xen5 xen-unstable.hg # ld -v
GNU ld (GNU Binutils) 2.19.1

If I drop the -Wl out, it bails on:

gcc -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls -m64 -g 
-fno-strict-aliasing -std=gnu99 -Wall -Wstrict-prototypes 
-Wno-unused-value -Wdeclaration-after-statement  -D__XEN_TOOLS__ -MMD 
-MF .xen-tmem-list-parse.d  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE  
-Werror -I ../../tools/python/xen/lowlevel/xc -I ../../tools/libxc -I 
../../tools/include  --no-as-needed     xen-tmem-list-parse.c   -o 
xen-tmem-list-parse
cc1: error: unrecognized command line option "-fno-as-needed"

the --no-as-needed is valid for ld according to the man, but not for gcc 
as far as I can see.
- Nathan

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