mesa: 292c24ddac5acc35676424f05291c101fcd47b3e (master 17.1.0-devel) FreeBSD build error. CC libmesautil_la-build_id.lo build_id.c:36:20: error: unknown type name 'Elf_Nhdr' #define ElfW(type) Elf_##type ^ build_id.c:42:4: note: in expansion of macro 'ElfW' ElfW(Nhdr) nhdr; ^ build_id.c: In function 'build_id_find_nhdr_callback': build_id.c:71:24: error: request for member 'n_type' in something not a structure or union if (note->nhdr.n_type == NT_GNU_BUILD_ID && ^ build_id.c:72:23: error: request for member 'n_descsz' in something not a structure or union note->nhdr.n_descsz != 0 && ^ build_id.c:73:23: error: request for member 'n_namesz' in something not a structure or union note->nhdr.n_namesz == 4 && ^ build_id.c:36:20: error: 'Elf_Nhdr' undeclared (first use in this function) #define ElfW(type) Elf_##type ^ build_id.c:79:33: note: in expansion of macro 'ElfW' size_t offset = sizeof(ElfW(Nhdr)) + ^ build_id.c:36:20: note: each undeclared identifier is reported only once for each function it appears in #define ElfW(type) Elf_##type ^ build_id.c:79:33: note: in expansion of macro 'ElfW' size_t offset = sizeof(ElfW(Nhdr)) + ^ build_id.c:80:42: error: request for member 'n_namesz' in something not a structure or union ALIGN(note->nhdr.n_namesz, 4) + ^ build_id.c:39:35: note: in definition of macro 'ALIGN' #define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1)) ^ build_id.c:81:42: error: request for member 'n_descsz' in something not a structure or union ALIGN(note->nhdr.n_descsz, 4); ^ build_id.c:39:35: note: in definition of macro 'ALIGN' #define ALIGN(val, align) (((val) + (align) - 1) & ~((align) - 1)) ^ build_id.c: In function 'build_id_length': build_id.c:107:21: error: request for member 'n_descsz' in something not a structure or union return note->nhdr.n_descsz; ^ build_id.c:108:1: warning: control reaches end of non-void function [-Wreturn-type] } ^
Looking at the FreeBSD headers it appears they define Elf_Note not Elf_Nhdr. https://svnweb.freebsd.org/base/head/sys/sys/elf_common.h?revision=HEAD&view=co The OpenBSD headers define both at the moment to be compatible though the Elf_Note members on OpenBSD do not have the n_ prefix only the Elf_Nhdr structs do where as the FreeBSD Elf_Note has the n_ prefix.
Build error introduced with this commit. commit d4fa083e11fa71abd50e615d6f02b6da4ea34644 Author: Matt Turner <mattst88@gmail.com> Date: Tue Feb 14 07:29:56 2017 -0800 util: Add utility build-id code. Provides the ability to read the .note.gnu.build-id section of ELF binaries, which is inserted by the --build-id=... flag to ld. Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Chad Versace <chadversary@chromium.org>
Quick search showed the following handy website. In there you can see that things "broke" between FreeBSD 10 and 11 - former has Elf_Nhdr while latter does not. Not sure how to solve this - anyone having a platform like that feel free to send a patch to the mailing list :-) http://fxr.watson.org/fxr/ident?v=FREEBSD10;i=Elf_Nhdr
Vinson do check the said site. Alternatively you can see/work with the FreeBSD people - they seems to have some partial solution there [1] [1] https://github.com/freebsd/freebsd-ports-graphics/blob/master/graphics/mesa-dri/files/patch-src_util_build__id.c
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