On Wed, Oct 16, 2013 at 10:23 AM, Sedat Dilek <sedat.di...@gmail.com> wrote: > On Wed, Oct 16, 2013 at 9:04 AM, Mike Frysinger <vap...@gentoo.org> wrote: >> On Tuesday 15 October 2013 15:00:40 Khem Raj wrote: >>> On Oct 15, 2013, at 10:30 AM, Steve Ellcey wrote: >>> > I have a question about endiness and uclibc. I am trying to build >>> > multiple versions of uclibc for MIPS, including big and little endian >>> > versions. What I notice is that in Rules.mak there are lines: >>> > >>> > CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN) += -Wl,-EL >>> > CPU_LDFLAGS-$(ARCH_BIG_ENDIAN) += -Wl,-EB >>> > >>> > to add -EL or -EB to linker commands (this seems to be generic for all >>> > architectures). >>> > >>> > What I do not see is any generic (or MIPS specific) code to add -EL or >>> > -EB to CPU_CFLAGS (or CPU_FLAGS-y to be exact). I am wondering if there >>> > is a specific reason for this? Right now the uclibc build seems to >>> > assume that the compiler I am using to build uclibc will always generate >>> > the correct endiness without any flags. >>> >>> That was consensus we had some time ago. Otherwise these flags were getting >>> too many and difficult to deal with. >> >> well, i think that was more focused on cpu/arch/tune flags. we still have >> endian flags in there for various targets. adding the right logic for mips >> would be OK imo. > > As the Freetz router project had to deal with BE/LE issues, we (yes, I > was more active these days) decided to define the Kconfig logic in: > > extra/Configs/Config.mips > > ...and added the the CPU_FLAGS-* (CPU optimization etc.) stuff to... > > Rules.mak > > Please see the patch in [1] for more details. > > - Sedat - > > [1] > http://freetz.org/browser/trunk/toolchain/make/target/uclibc/0.9.33.2/100-fritzbox_specific_arch_flags.freetz.patch
Just two details... Freetz supports mostly MIPS based router boxes. 2nd, check which minimum gcc-version supports certain CPU/arch flags (some projects still uses ancient gcc in their toolchains) :-)! - Sedat - _______________________________________________ uClibc mailing list uClibc@uclibc.org http://lists.busybox.net/mailman/listinfo/uclibc