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On Thu, 2007-11-01 at 07:25 -0400, Jason wrote: |
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> Jean-Claude Gervais wrote: |
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> > On Wed, 2007-10-31 at 20:43 +0100, Pal Szasz wrote: |
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> >> Just a little addition: there is another flag which might be involved: |
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> >> |
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> >> -mfloat-abi=softfp |
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> >> |
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> > |
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> > How do I pass those flags to the compiler by using crossedev? |
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> > |
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> > Here's the shell script I am currently using. |
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> > I changed it to go with Jason's recommended toolset versions but I am |
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> > still getting the same linking errors about floating-point |
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> > incompatibilities... |
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> > |
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> > .-.-.-.-.-.-.- |
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> > |
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> > #!/bin/bash |
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> > |
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> > CBUILD="i686-pc-linux-gnu" |
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> > |
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> > CHOST=$CBUILD |
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> > |
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> > CTARGET="arm-softfloat-linux-uclibc" |
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> > |
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> > #export ROOT="/usr/arm-softfloat-linux-uclibc" |
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> > |
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> > PORTAGE_CONFIGROOT="/usr/arm-softfloat-linux-uclibc" |
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> > |
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> > UCLIBC_CPU="ARM920T" USE="-*" crossdev -v --binutils 2.17 --gcc 3.4.6-r2 |
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> > --kernel 2.6.19-r2 --libc 0.9.28.3 --ex-gdb --target |
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> > arm-softfloat-linux-uclibc |
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> |
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> before you tried this command, did you delete the old attempt? eg |
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> |
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> crossdev -C arm-softfloat-linux-uclibc |
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> |
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> Chances are you have stale uclibc files installed from a previous |
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> attempt that are conflicting with the current attempt. |
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You are correct, unmerging the gcc did the trick. |
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> |
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> Also, make sure you unset PORTAGE_CONFIGROOT, CTARGET, CHOST, and |
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> CBUILD. Those may foul up crossdev (You're not cross-compiling a |
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> cross-compiling toolchain are you?). Those variable assignments are for |
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> _after_ the toolchain is built when you want to use it. |
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I'm a bit confused. I had those defined while crossdev was running. It |
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might explain some of the problems I've had. |
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>From your description, it appears generating the toolset is SIMPLER than |
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I thought. |
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|
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Just to be clear; I am executing the following, is it OK? |
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|
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-.-.-.-.-.-.-.-.-.-.-.-.- |
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SYSROOT="/usr/arm-softfloat-linux-uclibc" |
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UCLIBC_CPU="ARM920T" USE="-*" crossdev -v -S --gcc 3.4.6-r2 --ex-gdb |
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--target arm-softfloat-linux-uclibc |
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|
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-.-.-.-.-.-.-.-.-.-.-.-.- |
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|
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Apart from having to create an empty |
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$SYSROOT/usr/include/asm/page.h |
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the toolchain builds. |
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|
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I came to a erroneous conclusion of setting CBUILD, CHOST, CTARGET and |
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PORTAGE_CONFIGROOT during crossdev execution from (mis)reading this |
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documentation: |
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http://www.gentoo.org/proj/en/base/embedded/cross-development.xml |
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|
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Is this document out of date? It mentions setting the ROOT variable, but |
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crossdev complained that ROOT was not supported... Maybe ROOT is not |
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intended to be used with crossedev, in which case it's another |
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misunderstanding on my part. |
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|
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Is there a document I should read that might help? |
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|
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Thank you very much for your help, Jason. |
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PS - About the top-posting, it was a mistake on my part, thanks to those |
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who pointed it out. |
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-- |
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