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AK+Everywhere: Add AK_COMPILER_{GCC,CLANG} and use them most places

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Doesn't use them in libc headers so that those don't have to pull in
AK/Platform.h.

AK_COMPILER_GCC is set _only_ for gcc, not for clang too. (__GNUC__ is
defined in clang builds as well.) Using AK_COMPILER_GCC simplifies
things some.

AK_COMPILER_CLANG isn't as much of a win, other than that it's
consistent with AK_COMPILER_GCC.
This commit is contained in:
Nico Weber 2022-10-04 15:04:13 -04:00 • committed by Linus Groh
parent ff4b912b7c
commit 2af028132a
35 changed files with 64 additions and 49 deletions
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2
Kernel/StdLib.cpp
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@ -206,7 +206,7 @@ ErrorOr<void> memset_user(void* dest_ptr, int c, size_t n)
return {};
}
#if defined(__clang__) && defined(ENABLE_KERNEL_LTO)
#if defined(AK_COMPILER_CLANG) && defined(ENABLE_KERNEL_LTO)
// Due to a chicken-and-egg situation, certain linker-defined symbols that are added on-demand (like the GOT)
// need to be present before LTO bitcode files are compiled. And since we don't link to any native object files,
// the linker does not know that _GLOBAL_OFFSET_TABLE_ is needed, so it doesn't define it, so linking as a PIE fails.