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On 03/20/16 12:20, Sean Bruno wrote: > aarch64 targets are now failing to build on i386 hosts due to > missing __atomic_load_8() calls since this commit: > > https://github.com/qemu/qemu/commit/a0aa44b488b3601415d55041e4619aef5f 3a4ba8#diff-c143d686899ae51d7b927d9c682e12fd > > I'm unsure if Linux is disabling aarch64 targets for i386 hosts or > if this commit works "just fine" on Linux hosts right now, as it > doesn't work with clang or gcc. > > More or less, the code in question ends up looking like this bit > of test code: > > #include <stdio.h> #include <sys/types.h> #include > <machine/atomic.h> > > #define atomic_read(ptr) \ ({ > \ typeof(*ptr) _val; \ > __atomic_load(ptr, &_val, __ATOMIC_RELAXED); \ _val; > \ }) > > int main () { int foo; int64_t foo64; > > atomic_read(&foo); atomic_read(&foo64); > > return(0); } > > > This test code will manifest the same issue as the aarch64 target > building on FreeBSD i386 with the error: > > undefined reference to `__atomic_load_8' > > This seems to be fixed with the latest commits. Thanks! sean -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJXBTUqXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRCQUFENDYzMkU3MTIxREU4RDIwOTk3REQx MjAxRUZDQTFFNzI3RTY0AAoJEBIB78oecn5kAoYH/3Ai7IdpyxyIiRtgYDWJQcg8 GLmbu1NL5Xrh0af5DU933kCqkDlKK8qKYs89DzHMfay8TIyZFkqKF5pYy66JJAQ2 qAB9eGTL567q3QPk9iYkRLju4Y4exmBL1ZSW1fUpPKjjjBlLR7VrHjEA/Ze0zYsM +MvRJcHSf8tNawr8WfOzVgFPf8pc2K0Ix8/VZCFEdf4FcATHj2nYXTmzQmTQuWSo tqDWe02TIov0BSBaA4uG6n02F4KWglGBE+bdsuTiwxxAjkcmHLgg28h7Wupkmatj 5zarlSLIhvv7j3KAS/r8aKtQ04ydXybTo0HnPLJ9JV/xz3bAbvvKDYLMZijpm0M= =OSgq -----END PGP SIGNATURE-----
