diff mbox series

[v4,28/31] gcc-plugins: move GCC version check for PowerPC to Kconfig

Message ID 1526537830-22606-29-git-send-email-yamada.masahiro@socionext.com
State Superseded
Headers show
Series kconfig: move compiler capability tests to Kconfig | expand

Commit Message

Masahiro Yamada May 17, 2018, 6:17 a.m. UTC 
For PowerPC, GCC 5.2 is the requirement for GCC plugins.  Move the
version check to Kconfig so that the GCC plugin menus will be hidden
if an older compiler is in use.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>

---

Changes in v4: None
Changes in v3:
  - Move comment to Kconfig as well

Changes in v2: None

 arch/powerpc/Kconfig         | 2 +-
 scripts/Makefile.gcc-plugins | 8 --------
 2 files changed, 1 insertion(+), 9 deletions(-)

-- 
2.7.4

Comments

Kees Cook May 17, 2018, 6:29 a.m. UTC | #1 
On Wed, May 16, 2018 at 11:17 PM, Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
> For PowerPC, GCC 5.2 is the requirement for GCC plugins.  Move the

> version check to Kconfig so that the GCC plugin menus will be hidden

> if an older compiler is in use.

>

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>


Reviewed-by: Kees Cook <keescook@chromium.org>


-Kees

-- 
Kees Cook
Pixel Security
diff mbox series

Patch

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c32a181..17e53e6 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   # plugin support on gcc <= 5.1 is buggy on PPC
 	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 0ce3802..1e92353 100644
--- a/scripts/Makefile.gcc-plugins
+++ b/scripts/Makefile.gcc-plugins
@@ -53,14 +53,6 @@  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
       ifeq ($(call cc-ifversion, -ge, 0405, y), y)
 	$(Q)$(srctree)/scripts/gcc-plugin.sh --show-error "$(__PLUGINCC)" "$(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