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| author | Ivan Maidanski <ivmai@mail.ru> | 2018-03-29 01:42:38 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2018-03-29 01:42:38 +0300 |
| commit | 759fa976432e4f09b4a436774fff7119da050042 (patch) | |
| tree | c54b517c99f19ad7f56faa7404ccdb44bb49f03a /src | |
| parent | 3c2f9fbf24cd52360a6c523ba35b009e66405ef5 (diff) | |
| download | libatomic_ops-759fa976432e4f09b4a436774fff7119da050042.tar.gz | |
Fix 'undefined reference to __atomic_load/store/cas_16' error (gcc-7/x64)
Issue #34 (libatomic_ops).
* src/atomic_ops/sysdeps/gcc/x86.h [!AO_DISABLE_GCC_ATOMICS
&& !__APPLE_CC__ && !__clang__ && AO_GNUC_PREREQ(7, 0)
&& !AO_PREFER_BUILTIN_ATOMICS && !AO_THREAD_SANITIZER
&& !__MINGW32__] (AO_SKIPATOMIC_double_compare_and_swap_ANY,
AO_SKIPATOMIC_DOUBLE_LOAD_STORE_ANY): Define macro; add comment.
Diffstat (limited to 'src')
| -rw-r--r-- | src/atomic_ops/sysdeps/gcc/x86.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/atomic_ops/sysdeps/gcc/x86.h b/src/atomic_ops/sysdeps/gcc/x86.h index d7c06c5..b4ca39f 100644 --- a/src/atomic_ops/sysdeps/gcc/x86.h +++ b/src/atomic_ops/sysdeps/gcc/x86.h @@ -67,7 +67,15 @@ # define AO_SKIPATOMIC_DOUBLE_LOAD_STORE_ANY # endif # endif /* __x86_64__ */ -# endif /* __clang__ */ + +# elif AO_GNUC_PREREQ(7, 0) && !defined(AO_PREFER_BUILTIN_ATOMICS) \ + && !defined(AO_THREAD_SANITIZER) && !defined(__MINGW32__) + /* gcc-7.x/x64 (gcc-7.2, at least) requires -latomic flag in case */ + /* of double-word atomic operations use (but not in case of TSan). */ + /* TODO: Revise it for the future gcc-7 releases. */ +# define AO_SKIPATOMIC_double_compare_and_swap_ANY +# define AO_SKIPATOMIC_DOUBLE_LOAD_STORE_ANY +# endif /* __GNUC__ && !__clang__ */ # ifdef AO_SKIPATOMIC_DOUBLE_LOAD_STORE_ANY # define AO_SKIPATOMIC_double_load |