musl-1.2.4 no longer defines lseek64, and since off_t is always 64-bits, autoconf decides to not pass in -D_FILE_OFFSET_BITS=64 when compiling, and this results in a compilation failure.
Instead of checking _FILE_OFFSET_BITS=64, let's just check if SIZEOF_OFF_T is SIZEOF_LONG_LONG. Also, SIZEOF_LONG is irrelevant.
musl-1.2.4 no longer defines lseek64, and since off_t is always 64-bits, autoconf decides to not pass in -D_FILE_OFFSET_BITS=64 when compiling, and this results in a compilation failure.
Instead of checking _FILE_OFFSET_BITS=64, let's just check if SIZEOF_OFF_T is SIZEOF_LONG_LONG. Also, SIZEOF_LONG is irrelevant.