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Hi Yan, List I am withdrawing my question about making -mthumb default compilation option, and here comes the the question - how to specify compilation/configuration options to the tools which are a part of toolchain, Suppose I want to build libstc++ using -mthumb, how can this be achieved ? I was trying to change manually Makefile.am in the targets/src/gcc-4.4.1/libstdc++-v3/src/Makefile.am but it does not copied the -mthumb to the generated Makefile in the build area. Regards, Lev > Hello Lev, All, > > On Thursday 31 December 2009 10:32:27 lev@lingnu.com wrote: >> I took the Mercurial snapshot a5020a1facff >> 1. ./configure --local >> Refused to accept local > > What's the exact message it printed ? > I was not able to reproduce it again >> 2. ./configure >> complains to the absebce of hg (mercurial) and stops > > Yes, it is expected that people that use a snapshot (or a clone) of > the repository will do changes in the code, and eventually submit those > changes, so it is expected they have Mercurial installed. > >> 3. ct-ng build with config set as >> CT_ARCH_ARM_MODE_THUMB=y >> CT_ARCH_ARM_INTERWORKING=y > > I guess if you want Thumb, you do not necessarily need Interworking. > And the other way around. > > It is to be noted, however, that the EABI mandates interworking support. > >> fails in >> DEBUG] ==> Executing: 'make -j1 >> CROSS=arm-unknown-linux-uclibcgnueabi- > > To my knowledge, neither glibc, eglibc nor uClibc builds in Thumb-only > mode. > You may have the best luck with eglibc, but that's not guaranteed. > > For now, you're stuck with building a bare-metal toolchain with newlib. > > I know the guys at ARM managed to build a Linux kernel using pure Thumb2, > and that it's now mainline, but so far I have not seen any 'Linux' libc > build in pure Thumb mode. > I am not sure , -mthumb produced Thumb2 assembly ? > Regards, > Yann E. MORIN. > > -- > .-----------------.--------------------.------------------.--------------------. > | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' > conspiracy: | > | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ > | > | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is > no | > | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v > conspiracy. | > `------------------------------^-------^------------------^--------------------' > > > -- For unsubscribe information see http://sourceware.org/lists.html#faq
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