On 12/04/12 20:10, Allen Martin wrote: > I have a cross toolchain I configured with "--with-arch=armv7-a > --with-cpu=cortex-a9 --with-tune=cortex-a9" and I want the linker to emit > armv4t compatible thumb interworking, but I can't seem to get it to. > > I noticed that if I create a armv4t toolchain with "--with-arch=armv4t > --with-cpu=arm7tdmi --with-tune=arm7tdmi" and then I pass "--use-blx" to the > linker it will emit armv7 thumb interworking. There doesn't seem to be any > inverse "--no-use-blx" type switch though. Is this a bug/limitation of the > linker or am I misunderstanding something? >
it's all in the friendly manual :-) The option you need is --fix-v4bx. BTW, taking a v7a toolchain and trying to use it to build v4 binaries is likely to be prolematic. For it to work you'll need to ensure that *all* your libraries are built to support back-conversion to v4, including those that are normally built as part of the toolchain (libgcc, etc). R. -- Richard Earnshaw Email: richard.earns...@arm.com Engineering Manager Phone: +44 1223 400569 (Direct + VoiceMail) OpenSource Tools Switchboard: +44 1223 400400 ARM Ltd Fax: +44 1223 400410 110 Fulbourn Rd Web: http://www.arm.com/ Cambridge, UK. CB1 9NJ -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
