On Thu, 2009-10-15 at 13:58 +0200, Vladimir 'phcoder' Serbinenko wrote:
> The methods discussed in this thread are good but aren't for release. So
> I just reverted Pavel's commit
My cross-build for sparc64 fails now:
__bswapsi2 in fat is not defined
This can be traced to the following part of config.log:
configure:7314: checking for __bswapsi2
configure:7370: sparc64-linux-uclibc-gcc -o conftest -Wall -W -Wshadow
-Wpointer-arith -Wmissing-prototypes -Wundef
-Wstrict-prototypes -g -Os -m64 -fno-stack-protector -Werror -nostdlib
-Wl,--defsym,___main=0x8100 -m64 conftest.c >&5
In file included
from
/opt/sparc/usr/lib/gcc/sparc64-linux-uclibc/4.3.3/include-fixed/syslimits.h:7,
from
/opt/sparc/usr/lib/gcc/sparc64-linux-uclibc/4.3.3/include-fixed/limits.h:11,
from conftest.c:38:
/opt/sparc/usr/lib/gcc/sparc64-linux-uclibc/4.3.3/include-fixed/limits.h:122:61:
error: no include path in which to search for limits.h
cc1: warnings being treated as errors
conftest.c:51: error: function declaration isn't a prototype
configure:7377: $? = 1
The reason limits.h is missing is because I failed to compile uClibc for
sparc64 using buildroot.
But even if I create an empty /opt/sparc/usr/include/limits.h, the test
fails:
configure:7314: checking for __bswapsi2
configure:7370: gcc -o conftest -Wall -W -Wshadow -Wpointer-arith
-Wmissing-prototypes -Wundef -Wstrict-prototypes -g -Os
-fno-dwarf2-cfi-asm -m64 -fno-stack-protector -mno-stack-arg-probe
-Werror -nostdlib -Wl,--defsym,___main=0x8100 -m64 conftest.c >&5
cc1: warnings being treated as errors
conftest.c:51: error: function declaration isn't a prototype
configure:7377: $? = 1
I'm afraid it's a real bug that would affect native compilation. We
should move adding -Werror to TARGET_CFLAGS after all checks.
Even after I do that, I still get:
configure:7305: checking for __bswapsi2
configure:7361: gcc -o conftest -Wall -W -Wshadow -Wpointer-arith
-Wmissing-prototypes -Wundef -Wstrict-prototypes -g -Os
-fno-dwarf2-cfi-asm -m64 -fno-stack-protector -mno-stack-arg-probe
-nostdlib -Wl,--defsym,___main=0x8100 -m64 conftest.c >&5
conftest.c:51: warning: function declaration isn't a prototype
/usr/bin/ld: warning: cannot find entry symbol _start; defaulting to
0000000000400144
/tmp/ccoCvQMe.o: In function `main':
/home/proski/src/grub2.git/build-ieee1275-sparc64-linux-uclibc/conftest.c:62:
undefined reference to `__bswapsi2'
collect2: ld returned 1 exit status
configure:7368: $? = 1
That may or may not be due to the lack of the libc. I tried checking
for __ashldi3, which is exported unconditionally on PowerPC, and the
check fails, even though I have libc for PowerPC. That's also a
cross-compiler, but I can test it on a PowerMac if necessary.
This makes me think that checks for __bswapsi2 and __bswapdi2 will fail
on Sparc64, even if those functions are present and even if
--disable-werror is used.
--
Regards,
Pavel Roskin
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