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lib: avoid redefinition of _AC() macro

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The kernel already provides the same macro as does the zt_common.h file,
thus check for its availability first.

  CC      zconf/qeth/lsqeth.o
In file included from ../../include/lib/util_base.h:17,
                 from lsqeth.c:30:
../../include/lib/zt_common.h:27: warning: "_AC" redefined
   27 | #define _AC(X, TYPE)    X##TYPE
      |
In file included from /usr/include/linux/ethtool.h:17,
                 from lsqeth.c:12:
/usr/include/linux/const.h:21: note: this is the location of the previous definition
   21 | #define _AC(X,Y)        __AC(X,Y)
      |

GitHub-ID: https://github.com/ibm-s390-linux/s390-tools/pull/137
Signed-off-by: Dan Horák <dan@danny.cz>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Dan Horák
2022-06-06 08:04:59 +00:00
committed by Jan Höppner
parent b4648ec4bd
commit 2285b9527b
1 changed files with 2 additions and 0 deletions
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2
include/lib/zt_common.h
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@@ -21,11 +21,13 @@
* Usage example:
* #define IMAGE_ENTRY _AC(0x10000, UL)
*/
#ifndef _AC
#ifdef __ASSEMBLER__
#define _AC(X, TYPE) X
#else
#define _AC(X, TYPE) X##TYPE
#endif
#endif
#ifndef __ASSEMBLER__