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On 01/04/2011 07:59 PM, Mike Frysinger wrote: |
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> On Tuesday, January 04, 2011 04:02:59 Patrice Tisserand wrote: |
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>> Mike Frysinger wrote: |
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>>> On Monday, January 03, 2011 05:19:58 Kfir Lavi wrote: |
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>>>> when I try to cross compile sys-fs/e2fsprogs I get this error: |
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>>>> checking for blkid_get_cache in -lblkid... no |
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>>>> |
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>>>> copying the uuid and blkid files to the cross environment solve the |
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>>>> problem and the package compiles. |
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>>>> cp /tmp/target_root/usr/lib/libuuid.* |
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>>>> /usr/i686-gentoo-linux-gnu/usr/lib/ cp |
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>>>> /tmp/target_root/usr/lib/libblkid.* /usr/i686-gentoo-linux-gnu/usr/lib/ |
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>>>> cp /tmp/target_root/lib/libuuid.so.1* /usr/i686-gentoo-linux-gnu/lib/ |
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>>>> cp /tmp/target_root/lib/libblkid.so.1* /usr/i686-gentoo-linux-gnu/lib/ |
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>>>> |
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>>>> How can this problem be solved permanently? |
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>>> |
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>>> you should be emerging library packages into your SYSROOT (/usr/$CTARGET) |
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>>> before building/installing packages into your ROOT |
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>> |
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>> Does adding -L /tmp/target_root/lib -L /tmp/target_root/usr/lib |
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>> -Wl,-rpath-link,/tmp/target_root/lib |
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>> -Wl,-rpath-link,/tmp/target_root/usr/lib to LDFLAGS could not be an |
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>> alternative ? |
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> |
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> no. that's broken by design. |
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Thanks for your answer, I have found the following sentence in gentoo |
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embedded handbook: |
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"""The common convention is to use your /usr/CTARGET/ tree as your |
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sysroot as the include/library directories in this tree are already |
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encoded into the gcc cross-compiler for searching. You could use another |
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directory and then add custom -I/-L paths to your CPPFLAGS/LDFLAGS, but |
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this has historically proven to be problematic. Yes, it works most of |
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the time, but the corner cases are why this method is discouraged. In |
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the embedded handbook, we'll assume you're using the sysroot as your |
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development ROOT. |
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""" |
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Do you know where I can find references about these corner cases ? |
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|
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Also how can I handle creating 2 different target rootfs with different |
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libraries versions but using the same cross-compilation toolchain? |
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Do I need to duplicate environment or is there some tips ? |
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|
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Regards, |
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Patrice |
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