Andrei Borzenkov <arvidj...@gmail.com> writes:
> 13.09.2015 05:41, Mark H Weaver пишет:
>> I'm glad to report that with your new patch, GRUB successfully builds on
>> GuixSD mips64el with TARGET_CC=clang. I haven't yet tried booting it
>> though.
>>
>
> Did you have chance to test whether compiled grub actually work?
Not yet. I'll try to do it in the next few days.
>> The warning above makes me doubt the portability and future-proofness of
>> the link step of this test. This problem could be avoided entirely by
>> omitting the link step. The link step serves no purpose in this test,
>> and is a potential source of portability problems.
>>
>
> This step helped us to catch endianness mismatch; we want to ensure in
> this case that full toolchain works to produce final binary.
Okay, fair enough :)
> Please test two attached patches. They separate o32 test from
> endianness test. I compile-tested them using cross-binutils for mips
> and powerpc64le to compile for mipsel and powerpc. The first patch
> also adds additional _start and __start symbols to endianness tests to
> avoid compiler warnings.
The little-endian-option test fails with GCC 5.2.0. The relevant errors
from config.log are:
gcc: error: unrecognized command line option '-target'
gcc: error: unrecognized command line option '-mlittle-endian'
I guess the error messages above should be enough. Let me know if you
want more.
It succeeds with clang 3.6.0. See below for the relevant excerpts of
config.log.
Thanks,
Mark
--8<---------------cut here---------------start------------->8---
configure:24669: checking for options to get little-endian compilation
configure:24704:
/gnu/store/yjmchvkz0kmz4s1sxc0p89imfik68qzg-clang-3.6.0/bin/clang -o conftest
-Os -Wall -W -Wshadow -Wpointer-arith -Wundef -Wchar-subscripts -Wcomment
-Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal
-Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit
-Wimplicit-function-declaration -Wimplicit-int -Wmain -Wmissing-braces
-Wmissing-format-attribute -Wmultichar -Wparentheses -Wreturn-type
-Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs -Wunknown-pragmas
-Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value
-Wunused-variable -Wwrite-strings -Wnested-externs -Wstrict-prototypes -g
-Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -Wcast-align
-Wextra -Wattributes -Wendif-labels -Winit-self -Wint-to-pointer-cast
-Winvalid-pch -Wmissing-field-initializers -Wnonnull -Woverflow -Wvla
-Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -target mipsel -Wl,-EL
-Werror -Wall -W -DGRUB_CPU_MIPSEL=1 -DGRUB_MACHINE_MIPS_LOONGSON=1
-DGRUB_MACHINE=MIPS_LOONGSON -nostdlib -static conftest.c >&5
ld: /tmp/conftest-78445a.o: ABI is incompatible with that of the selected
emulation
ld: failed to merge target specific data of file /tmp/conftest-78445a.o
collect2: error: ld returned 1 exit status
clang-3.6: error: linker (via gcc) command failed with exit code 1 (use -v to
see invocation)
configure:24704: $? = 1
configure: failed program was:
[...]
configure:24704:
/gnu/store/yjmchvkz0kmz4s1sxc0p89imfik68qzg-clang-3.6.0/bin/clang -o conftest
-Os -Wall -W -Wshadow -Wpointer-arith -Wundef -Wchar-subscripts -Wcomment
-Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal
-Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit
-Wimplicit-function-declaration -Wimplicit-int -Wmain -Wmissing-braces
-Wmissing-format-attribute -Wmultichar -Wparentheses -Wreturn-type
-Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs -Wunknown-pragmas
-Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value
-Wunused-variable -Wwrite-strings -Wnested-externs -Wstrict-prototypes -g
-Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -Wcast-align
-Wextra -Wattributes -Wendif-labels -Winit-self -Wint-to-pointer-cast
-Winvalid-pch -Wmissing-field-initializers -Wnonnull -Woverflow -Wvla
-Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -target mipsel -Werror
-Wall -W -DGRUB_CPU_MIPSEL=1 -DGRUB_MACHINE_MIPS_LOONGSON=1
-DGRUB_MACHINE=MIPS_LOONGSON -nostdlib -static conftest.c >&5
ld: /tmp/conftest-66051b.o: ABI is incompatible with that of the selected
emulation
ld: failed to merge target specific data of file /tmp/conftest-66051b.o
collect2: error: ld returned 1 exit status
clang-3.6: error: linker (via gcc) command failed with exit code 1 (use -v to
see invocation)
configure:24704: $? = 1
configure: failed program was:
[...]
configure:24704:
/gnu/store/yjmchvkz0kmz4s1sxc0p89imfik68qzg-clang-3.6.0/bin/clang -o conftest
-Os -Wall -W -Wshadow -Wpointer-arith -Wundef -Wchar-subscripts -Wcomment
-Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal
-Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit
-Wimplicit-function-declaration -Wimplicit-int -Wmain -Wmissing-braces
-Wmissing-format-attribute -Wmultichar -Wparentheses -Wreturn-type
-Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs -Wunknown-pragmas
-Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value
-Wunused-variable -Wwrite-strings -Wnested-externs -Wstrict-prototypes -g
-Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -Wcast-align
-Wextra -Wattributes -Wendif-labels -Winit-self -Wint-to-pointer-cast
-Winvalid-pch -Wmissing-field-initializers -Wnonnull -Woverflow -Wvla
-Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -target mipsel-linux-gnu
-Wl,-EL -Werror -Wall -W -DGRUB_CPU_MIPSEL=1 -DGRUB_MACHINE_MIPS_LOONGSON=1
-DGRUB_MACHINE=MIPS_LOONGSON -nostdlib -static conftest.c >&5
configure:24704: $? = 0
configure:24712: result: -target mipsel-linux-gnu -Wl,-EL
configure:24728: checking for options to force MIPS o32 ABI
configure:24761:
/gnu/store/yjmchvkz0kmz4s1sxc0p89imfik68qzg-clang-3.6.0/bin/clang -o conftest
-Os -Wall -W -Wshadow -Wpointer-arith -Wundef -Wchar-subscripts -Wcomment
-Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal
-Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit
-Wimplicit-function-declaration -Wimplicit-int -Wmain -Wmissing-braces
-Wmissing-format-attribute -Wmultichar -Wparentheses -Wreturn-type
-Wsequence-point -Wshadow -Wsign-compare -Wswitch -Wtrigraphs -Wunknown-pragmas
-Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value
-Wunused-variable -Wwrite-strings -Wnested-externs -Wstrict-prototypes -g
-Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -Wcast-align
-Wextra -Wattributes -Wendif-labels -Winit-self -Wint-to-pointer-cast
-Winvalid-pch -Wmissing-field-initializers -Wnonnull -Woverflow -Wvla
-Wpointer-to-int-cast -Wstrict-aliasing -Wvariadic-macros
-Wvolatile-register-var -Wpointer-sign -Wmissing-include-dirs
-Wmissing-prototypes -Wmissing-declarations -Wformat=2 -target mipsel-linux-gnu
-Werror -Wall -W -DGRUB_CPU_MIPSEL=1 -DGRUB_MACHINE_MIPS_LOONGSON=1
-DGRUB_MACHINE=MIPS_LOONGSON -nostdlib -static conftest.c >&5
configure:24761: $? = 0
configure:24769: result:
--8<---------------cut here---------------end--------------->8---
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
