Hello Again, And sorry to insist. Editing the KBUILD_CFLAGS and KBUILD_AFLAGS from the build_dir/linux-arm/linux/arch/arm/Makefile and removing the -msoft-float I can bypass the error.
My I happiness did not last any longer.. as I'm getting this next error: arm-hardfp-linux-gnueabi-ld: unrecognised emulation mode: uclibc Supported emulations: armelf_linux_eabi armelfb_linux_eabi If I try to compile the same kernel tree (which is in a local git repo), with the toolchain (based on glibc) I can do it with no problems (also without the -mfloat-abi=soft and -mfloat-abi=hard error). Also using a demo .c and manually passing the -muclibc to the gcc compiler I'm able to compile it with any complains from the compiler. When using an external toolchain, openwrt asked me for a file in include/site/arm-hardfp-linux-gnueabi. I created one as a clone of the arm-openwrt-linux-gnueabi. I think I'm missing something. Can anyone helpme? thanks! On Sun, Feb 17, 2013 at 3:16 PM, Alberich de megres <alberich...@gmail.com>wrote: > Hello Florian, > > Thanks for your quick reply. > > I had the fpu feature for my target Makefile, and Also I disabled the > SOFT_FLOAT. > Also, I did a quick hack into rules.mk to ensure msoft-float is never > activated, > > ifeq ($(CONFIG_SOFT_FLOAT),y) > # SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft > # TARGET_CFLAGS+= -msoft-float > SOFT_FLOAT_CONFIG_OPTION:= > else > SOFT_FLOAT_CONFIG_OPTION:= > endif > > But i'm still getting the same error. > Maybe am I looking at the wrong place? > > Thanks once again, > Alberich > > > > > > > > On Sun, Feb 17, 2013 at 2:32 PM, Florian Fainelli <flor...@openwrt.org>wrote: > >> Hello Alberich, >> >> Le 17/02/2013 14:26, Alberich de megres a écrit : >> >> Hello, >>> >>> I'm trying to compile openwrt for an ARM using an external toolchain >>> with hardfp. >>> >>> When openwrt buildroot is compiling the kernel, at the oldconfig prepare >>> scripts i'm getting this error: >>> >>> arm-hardfp-linux-gnueabi-gcc: error: -mfloat-abi=soft and >>> -mfloat-abi=hard may not be used together >>> >>> In the openwrt menuconfig, >>> In advanced (developers ) -> target options -> use softhp is disabled >>> with this flags (for both: TARGET_OPTIMIZATION, >>> DEFAULT_TARGET_OPTIMIZATION): >>> -O2 -pipe -mfloat-abi=hard -mfpu=vfp >>> >>> Also I checked the kernel_menuconfig for FPU, which is enabled. >>> >>> At some point the -mfloat-abi=soft compiler flags is added to the flags, >>> but I could not find where is it added. fgrep for mfloat-abi=soft or >>> msoft-float didn't show anything relevant. >>> >>> Can anyone help me? >>> >> >> This is specifically passed to the GCC configure script here: >> https://dev.openwrt.org/**browser/trunk/toolchain/gcc/**common.mk#L125<https://dev.openwrt.org/browser/trunk/toolchain/gcc/common.mk#L125> >> >> you can disable the use of software floating point for your binaries from >> here: >> https://dev.openwrt.org/**browser/trunk/Config.in#L670<https://dev.openwrt.org/browser/trunk/Config.in#L670> >> >> software floating point is enabled by default for ARM little and big >> endian toolchains. Alternatively you can set the "fpu" feature flag in your >> target Makefile in target/linux/<target>/Makefile if you want to disable >> software floating point for your specific target/platform. >> -- >> Florian >> >> >
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