On Tue, 17 May 2016 16:28:05 +0200 Michal Marek <mma...@suse.com> wrote:
> Dne 13.5.2016 v 01:57 Emese Revfy napsal(a): > > --- /dev/null > > +++ b/scripts/Makefile.gcc-plugins > > @@ -0,0 +1,21 @@ > > +ifdef CONFIG_GCC_PLUGINS > > + __PLUGINCC := $(call cc-ifversion, -ge, 0408, $(HOSTCXX), $(HOSTCC)) > > + PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh > > "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)") > > + > > + GCC_PLUGINS_CFLAGS := $(addprefix > > -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) > > + > > + ifeq ($(PLUGINCC),) > > + ifneq ($(GCC_PLUGINS_CFLAGS),) > > + ifeq ($(call cc-ifversion, -ge, 0405, y), y) > > + PLUGINCC := $(shell $(CO, NFIG_SHELL) -x > > $(srctree)/scripts/gcc-plugin.sh "$(__PLUGINCC)" "$(HOSTCXX)" "$(CC)") > > + $(error error, your gcc installation does not support plugins, > > perhaps the necessary headers are missing?) > > + else > > + $(error error, your gcc version does not support plugins, you > > should upgrade it to gcc 4.5 at least) > > + endif > > + endif > > + endif > > + > > + KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS) > > + GCC_PLUGIN := $(gcc-plugin-y) > > + > > +endif > > Hi Emese, > > sorry for the late feedback. A problem I ran into now is that if you > have a compiler that is either too old or built with plugin support > disabled, scripts/Makefile.gcc-plugins errors out immediately. This is > going to be an issue with allmodconfig/allyesconfig test builds. A > solution would either be to make the respective options depend on > !COMPILE_TEST, or turn the errors into warnings and do nothing if the > compiler lacks plugin support. We are handling CONFIG_CC_STACKPROTECTOR > on x86 this way already. Hi, I'll change the errors to warnings in the next patch set. -- Emese
