diff options
Diffstat (limited to 'zstd/common/zstd_trace.h')
| -rw-r--r-- | zstd/common/zstd_trace.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/zstd/common/zstd_trace.h b/zstd/common/zstd_trace.h index 2da56407..f9121f7d 100644 --- a/zstd/common/zstd_trace.h +++ b/zstd/common/zstd_trace.h @@ -17,10 +17,19 @@ extern "C" { #include <stddef.h> -/* weak symbol support */ -#if !defined(ZSTD_HAVE_WEAK_SYMBOLS) && defined(__GNUC__) && \ +/* weak symbol support + * For now, enable conservatively: + * - Only GNUC + * - Only ELF + * - Only x86-64 and i386 + * Also, explicitly disable on platforms known not to work so they aren't + * forgotten in the future. + */ +#if !defined(ZSTD_HAVE_WEAK_SYMBOLS) && \ + defined(__GNUC__) && defined(__ELF__) && \ + (defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || defined(_M_IX86)) && \ !defined(__APPLE__) && !defined(_WIN32) && !defined(__MINGW32__) && \ - !defined(__CYGWIN__) + !defined(__CYGWIN__) && !defined(_AIX) # define ZSTD_HAVE_WEAK_SYMBOLS 1 #else # define ZSTD_HAVE_WEAK_SYMBOLS 0 |