Date: Tue, 19 May 2015 12:41:28 -0700 From: Sean Bruno <sbruno@ignoranthack.me> To: Brooks Davis <brooks@freebsd.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Trying to use clang/head and XCC Message-ID: <555B91E8.2050803@ignoranthack.me> In-Reply-To: <20150519165332.GA36377@spindle.one-eyed-alien.net> References: <555B638E.4020405@ignoranthack.me> <20150519165332.GA36377@spindle.one-eyed-alien.net>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 05/19/15 09:53, Brooks Davis wrote: > On Tue, May 19, 2015 at 09:23:42AM -0700, Sean Bruno wrote: > Following the External Tool Chain instructions on the wiki seem to > not work: https://wiki.freebsd.org/ExternalToolchain > > I've gotten about this far: > https://people.freebsd.org/~sbruno/clang_head_build_log.txt > >> You need to delete >> /home/sbruno/bsd/clang/build/bin/../lib/clang/3.7.0/include/std* >> and possibly also limits.h (it's broken for libstand on mips). >> If you use the ports/pkgs they do this. This didn't seem to make any difference when xcompiling for AMD64, but I did run into a buildfailure which might mean I don't know what I'm doing: ===> lib/libstand (all) /home/sbruno/bsd/clang/build/bin/clang -target x86_64-unknown-freebsd11.0 - --sysroot=/var/tmp/home/sbruno/bsd/fbsd_head/tmp - -B/var/tmp/home/sbruno/bsd/fbsd_head/tmp/usr/ bin -O2 -pipe -ffreestanding -Wformat - -I/home/sbruno/bsd/fbsd_head/lib/libstand -mno-mmx -mno-3dnow -mno-sse - -mno-sse2 -mno-sse3 -msoft-float -fPIC -mno-red-zone -DB Z_NO_STDIO -DBZ_NO_COMPRESS -DHAVE_MEMCPY - -I/home/sbruno/bsd/fbsd_head/lib/libstand/../libz -std=gnu99 - -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unuse d-const-variable -Wno-tautological-compare -Wno-unused-value - -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion - -Wno-unused-local-typedef -Wno-switch - Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses - -Qunused-arguments -c /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c -o strcspn.o /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:46:31: error: use of undeclared identifier 'LONG_BIT' u_long tbl[(UCHAR_MAX + 1) / LONG_BIT]; ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:60:9: error: use of undeclared identifier 'LONG_BIT' idx = IDX(*charset); ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:34:31: note: expanded from macro 'IDX' #define IDX(c) ((u_char)(c) / LONG_BIT) ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:61:9: error: use of undeclared identifier 'LONG_BIT' bit = BIT(*charset); ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:35:45: note: expanded from macro 'BIT' #define BIT(c) ((u_long)1 << ((u_char)(c) % LONG_BIT)) ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:66:9: error: use of undeclared identifier 'LONG_BIT' idx = IDX(*s1); ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:34:31: note: expanded from macro 'IDX' #define IDX(c) ((u_char)(c) / LONG_BIT) ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:67:9: error: use of undeclared identifier 'LONG_BIT' bit = BIT(*s1); ^ /home/sbruno/bsd/fbsd_head/lib/libstand/../libc/string/strcspn.c:35:45: note: expanded from macro 'BIT' #define BIT(c) ((u_long)1 << ((u_char)(c) % LONG_BIT)) ^ 5 errors generated. *** Error code 1 > > Two items of note. -- The bootstrap bits *completely* ignore XCC > and build with the host cc/c++ > >> That's expected. In principle clang could be used as the cross >> compiler since it's multi-target, but gcc could never work unless >> the host and target are the same. > > -- No documentation of what CFLAGS are required to build and > ignore warnings. > >> It will change with every clang/gcc release. In practice you >> will need to either fix the warnings wack-a-mole style or set >> NO_WERROR in the environment. > >> -- Brooks > > > Anyone out there have success doing this? > > sean >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To >> unsubscribe, send any mail to >> "freebsd-hackers-unsubscribe@freebsd.org" >> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJVW5HgXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRCQUFENDYzMkU3MTIxREU4RDIwOTk3REQx MjAxRUZDQTFFNzI3RTY0AAoJEBIB78oecn5kXuIH/ia5UTjDxWfc6JdjkSbGgA1n JFsY/d0VpFdtXVtcSFQ6hYn2SMqhKCFSKxMkeByTclM0xJddljwHiyMBM4z692wv B9ozMK9sgiiuNFiVRTHELmcxbR5rFd2sP6g5WaafcBopvk/RpsRUpkrEWbe7uj9B n8Ox7AbNiG7oWK2ki1/ngl9HBe4Iml7E4Obj01tBegYIx6YeZ9LD4VRTLgXtpLDy 1ZeG+gFNQQ237+3VxS78mFXDZRkyxnrWH5ltQ9zcTjI5zOmSmMOngquoK/8Jin2y xCSgV4C/ce31JSSeW/AA3I6WixswjoKU9lTpKKK7aZgcIxBrN8oLN10I8E4NL8o= =Ro9f -----END PGP SIGNATURE-----
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