| Message ID | 514AADAD.1060503@synopsys.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Mar 21, 2013 at 12:20:21PM +0530, Vineet Gupta wrote: > Hi, > > We do cross compile builds for ARC Linux. To avoid the env var set, we have a > defconfig entry for CONFIG_CROSS_COMPILE. > This worked fine so far (host gcc 4.4 i.e.). When switched to a new host distro > (gcc 4.7), a defconfig build spews out the warning. > > ------------------->8-------------------------- > mymake defconfig > gcc: error: unrecognized command line option '-marc600' > gcc: error: unrecognized command line option '-mA7' > gcc: error: unrecognized command line option '-mno-sdata' > gcc: error: unrecognized command line option '-mno-mpy' > *** Default configuration is based on 'fpga_defconfig' > # > # configuration written to .config > ------------------->8-------------------------- > > While the following trivial fix seems to fix this, it seems that the spew is > coming due to LIBGCC definition line, which is strange to be called for defconfig > generation. Any thoughts ? > > ----------------> > diff --git a/arch/arc/Makefile b/arch/arc/Makefile > index 4232d4e..97e6c20 100644 > --- a/arch/arc/Makefile > +++ b/arch/arc/Makefile > @@ -8,6 +8,10 @@ > > UTS_MACHINE := arc > > +ifeq ($(CROSS_COMPILE),) > +#CROSS_COMPILE := arc-elf32- > +endif > + > KBUILD_DEFCONFIG := fpga_defconfig You could try to use LIBGCC = $(shell ... for assignment. Use "=" and not ":=". Like this: -LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) +LIBGCC = $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) This would defer the evaluation until we actually reference the variable, and thus I think it will not trigger for a defconfig build. I could not reproduce the problem here so I am not sure this has any effect though... Sam -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Sam, On 04/01/2013 05:42 PM, Sam Ravnborg wrote: > On Thu, Mar 21, 2013 at 12:20:21PM +0530, Vineet Gupta wrote: >> Hi, >> >> We do cross compile builds for ARC Linux. To avoid the env var set, we have a >> defconfig entry for CONFIG_CROSS_COMPILE. >> This worked fine so far (host gcc 4.4 i.e.). When switched to a new host distro >> (gcc 4.7), a defconfig build spews out the warning. >> >> ------------------->8-------------------------- >> mymake defconfig >> gcc: error: unrecognized command line option '-marc600' >> gcc: error: unrecognized command line option '-mA7' >> gcc: error: unrecognized command line option '-mno-sdata' >> gcc: error: unrecognized command line option '-mno-mpy' >> *** Default configuration is based on 'fpga_defconfig' >> # >> # configuration written to .config >> ------------------->8-------------------------- >> >> While the following trivial fix seems to fix this, it seems that the spew is >> coming due to LIBGCC definition line, which is strange to be called for defconfig >> generation. Any thoughts ? >> >> ----------------> >> diff --git a/arch/arc/Makefile b/arch/arc/Makefile >> index 4232d4e..97e6c20 100644 >> --- a/arch/arc/Makefile >> +++ b/arch/arc/Makefile >> @@ -8,6 +8,10 @@ >> >> UTS_MACHINE := arc >> >> +ifeq ($(CROSS_COMPILE),) >> +#CROSS_COMPILE := arc-elf32- >> +endif >> + >> KBUILD_DEFCONFIG := fpga_defconfig > > > You could try to use LIBGCC = $(shell ... for assignment. > Use "=" and not ":=". > > Like this: > > -LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) > +LIBGCC = $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) > > This would defer the evaluation until we actually reference the variable, > and thus I think it will not trigger for a defconfig build. > > I could not reproduce the problem here so I am not sure this has any effect though... Indeed the defconfig is fixed with your suggestion. However make ARCH=arc {clean,distclean} still show the same spew ! Thx, -Vineet -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 4232d4e..97e6c20 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -8,6 +8,10 @@ UTS_MACHINE := arc +ifeq ($(CROSS_COMPILE),) +#CROSS_COMPILE := arc-elf32- +endif + KBUILD_DEFCONFIG := fpga_defconfig Thx,