commit 67d1c836b46dfaa271f1fca802c5fc4a01f74cb2
author Etienne Carriere <etienne.carriere@linaro.org> Mon May 10 15:58:41 2021 +0200
committer Jerome Forissier <jerome.forissier@linaro.org> Tue Sep 13 13:46:33 2022 +0200
tree 0b7294c782d15da36c01457a557818f03c3f0d71
parent 82826342c694eb884061a804328998a27e1577ac

core: zlib: fix build warning when _LFS64_LARGEFILE is not defined

In zlib, _LFS64_LARGEFILE is expected to be a boolean directive, either
1 (true) or 0 (false). Depending on toolchain version and directives
build may produces warnings (as shown below with gcc 9.3) when the macro
is not defined hence this change to default it to value 0 (false).

core/lib/zlib/zutil.h:196:39: warning: "_LFS64_LARGEFILE" is not defined, evaluates to 0 [-Wundef]
  196 |     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
      |                                       ^~~~~~~~~~~~~~~~
In file included from core/lib/zlib/adler32.c:9:
core/lib/zlib/zutil.h:196:39: warning: "_LFS64_LARGEFILE" is not defined, evaluates to 0 [-Wundef]
  196 |     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
      |                                       ^~~~~~~~~~~~~~~~
  CC      out/core/lib/zlib/zutil.o
In file included from core/lib/zlib/inftrees.c:7:
core/lib/zlib/zutil.h:196:39: warning: "_LFS64_LARGEFILE" is not defined, evaluates to 0 [-Wundef]
  196 |     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
      |                                       ^~~~~~~~~~~~~~~~
In file included from core/lib/zlib/inflate.c:84:
core/lib/zlib/zutil.h:196:39: warning: "_LFS64_LARGEFILE" is not defined, evaluates to 0 [-Wundef]
  196 |     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
      |                                       ^~~~~~~~~~~~~~~~
In file included from core/lib/zlib/zutil.c:9:
core/lib/zlib/zutil.h:196:39: warning: "_LFS64_LARGEFILE" is not defined, evaluates to 0 [-Wundef]
  196 |     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
      |                                       ^~~~~~~~~~~~~~~~

Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>