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Date: Sat, 17 Feb 2018 03:38:49 +0900
From: Masahiro Yamada <yamada.masahiro@...ionext.com>
To: linux-kbuild@...r.kernel.org,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Arnd Bergmann <arnd@...db.de>, Kees Cook <keescook@...omium.org>,
Randy Dunlap <rdunlap@...radead.org>,
Ulf Magnusson <ulfalizer@...il.com>, Sam Ravnborg <sam@...nborg.org>,
Michal Marek <michal.lkml@...kovi.net>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
linux-kernel@...r.kernel.org, Paul Mackerras <paulus@...ba.org>,
kernel-hardening@...ts.openwall.com, linuxppc-dev@...ts.ozlabs.org,
Emese Revfy <re.emese@...il.com>
Subject: [PATCH 21/23] gcc-plugins: move GCC version check for PowerPC to Kconfig
For PowerPC, GCC 5.2 is the requirement for GCC plugins. Move the
version check to Kconfig, and remove the ugly checker.
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---
arch/powerpc/Kconfig | 2 +-
scripts/Makefile.gcc-plugins | 8 --------
2 files changed, 1 insertion(+), 9 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 73ce5dd..b8474c2 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -195,7 +195,7 @@ config PPC
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_TRACER
- select HAVE_GCC_PLUGINS
+ select HAVE_GCC_PLUGINS if GCC_VERSION >= 50200
select HAVE_GENERIC_GUP
select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
select HAVE_IDE
diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins
index b0f9108..25da4c0 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -56,14 +56,6 @@ gcc-plugins-check: FORCE
ifdef CONFIG_GCC_PLUGINS
ifeq ($(PLUGINCC),)
ifneq ($(GCC_PLUGINS_CFLAGS),)
- # Various gccs between 4.5 and 5.1 have bugs on powerpc due to missing
- # header files. gcc <= 4.6 doesn't work at all, gccs from 4.8 to 5.1 have
- # issues with 64-bit targets.
- ifeq ($(ARCH),powerpc)
- ifeq ($(call cc-ifversion, -le, 0501, y), y)
- @echo "Cannot use CONFIG_GCC_PLUGINS: plugin support on gcc <= 5.1 is buggy on powerpc, please upgrade to gcc 5.2 or newer" >&2 && exit 1
- endif
- endif
$(Q)$(srctree)/scripts/gcc-plugin.sh --show-error $(HOSTCXX) $(CC) || true
@echo "Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?" >&2 && exit 1
endif
--
2.7.4
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