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libspl: Fix incorrect use of platform defines on sparc64 

libspl tries to detect sparc64 by checking whether __sparc64__
is defined. Unfortunately, this assumption is not correct as
sparc64 does not define __sparc64__ but it defines __sparc__
and __arch64__ instead. This leads to sparc64 being detected
as 32-Bit sparc and the build fails because both _ILP32 and
_LP64 are defined in this case.

To fix the problem, remove the checks for __sparc64__ and
just check __arch64__ if a sparc host was previously
detected with __sparc__.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Closes #5913
This commit is contained in:
John Paul Adrian Glaubitz 2017-03-23 01:55:00 +01:00 committed by Brian Behlendorf
parent 64fc776208
commit d48be524ce
1 changed files with 2 additions and 2 deletions
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4
lib/libspl/include/sys/isa_defs.h
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@ -130,7 +130,7 @@ extern "C" {
#define _SUNOS_VTOC_16
/* sparc arch specific defines */
#elif defined(__sparc) || defined(__sparc__) || defined(__sparc64__)
#elif defined(__sparc) || defined(__sparc__)
#if !defined(__sparc)
#define __sparc
@ -143,7 +143,7 @@ extern "C" {
#define _BIG_ENDIAN
#define _SUNOS_VTOC_16
#if defined(__sparc64__)
#if defined(__arch64__)
#if !defined(_LP64)
#define _LP64
#endif