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powerpc64: make clang cross-build friendly

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ARCH_USING_PATCHABLE_FUNCTION_ENTRY depends on toolchain support for
-fpatchable-function-entry option. The current script that checks
for this support only handles GCC. Rename the script and extend it
to detect support for -fpatchable-function-entry with Clang as well,
allowing clean cross-compilation with Clang toolchains.

Signed-off-by: Hari Bathini <[email protected]>
Tested-by: Venkat Rao Bagalkote <[email protected]>
Signed-off-by: Madhavan Srinivasan <[email protected]>
Link: https://patch.msgid.link/[email protected]
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Hari Bathini authored and Madhavan Srinivasan committed 2026-03-07 16:02:25 +05:30
1 parent 04e707cb77
commit 73cdf24e81
2 files changed
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arch/powerpc/Kconfig
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@@ -573,8 +573,8 @@ config ARCH_USING_PATCHABLE_FUNCTION_ENTRY
depends on FUNCTION_TRACER && (PPC32 || PPC64_ELF_ABI_V2)
depends on $(cc-option,-fpatchable-function-entry=2)
def_bool y if PPC32
def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN
def_bool $(success,$(srctree)/arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN
def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) $(CLANG_FLAGS) -mlittle-endian) if PPC64 && CPU_LITTLE_ENDIAN
def_bool $(success,$(srctree)/arch/powerpc/tools/check-fpatchable-function-entry.sh $(CC) -mbig-endian) if PPC64 && CPU_BIG_ENDIAN
config PPC_FTRACE_OUT_OF_LINE
def_bool PPC64 && ARCH_USING_PATCHABLE_FUNCTION_ENTRY
arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh → arch/powerpc/tools/check-fpatchable-function-entry.sh
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