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build: Update to reflect minimum clang version 8.0

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After doing some validation with clang from versions 3.8 and up, the
builds prior to version 8.0.0 fail due to the use of safemath functions
at link time.

Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Darren Kenny authored and Daniel Kiper committed 2022-10-27 16:29:46 +02:00
1 parent 30641d4501
commit 59022ae263
2 files changed
+4 -4
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include/grub/safemath.h
+3 -3
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@@ -23,15 +23,15 @@
#include <grub/compiler.h>
/* These appear in gcc 5.1 and clang 3.8. */
#if GNUC_PREREQ(5, 1) || CLANG_PREREQ(3, 8)
/* These appear in gcc 5.1 and clang 8.0. */
#if GNUC_PREREQ(5, 1) || CLANG_PREREQ(8, 0)
#define grub_add(a, b, res) __builtin_add_overflow(a, b, res)
#define grub_sub(a, b, res) __builtin_sub_overflow(a, b, res)
#define grub_mul(a, b, res) __builtin_mul_overflow(a, b, res)
#else
#error gcc 5.1 or newer or clang 3.8 or newer is required
#error gcc 5.1 or newer or clang 8.0 or newer is required
#endif
#endif /* GRUB_SAFEMATH_H */