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HI Community: |
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I'm trying to cross compile a stage1 base system for Openpandora. All the |
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steps can be followed in this wiki [1]. |
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I prefer to take cross compile way,because I think it's more considerable |
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for embedded development. Since not all the embedded devices |
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are that powerful as TI's OMAP3 chip. Gentoo-openpandora-dev already took |
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the native way to compile out most packages : ) Great! |
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Actually the upstream provide two scripts [2] to setup the building |
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environment. Which one is crossdev_set_environment.sh, it set SYSROOT same |
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with ROOT, another is set_environment.sh, which make ROOT different from |
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SYSROOT. Since SYSROOT is the cross |
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toolchain's environment, and ROOT is the target rootfs. I perfer to take |
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set_set_environment.sh's way, It would seperate toolchains and target |
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rootfs. So it will make the finanal rootfs more neat and clean, also will |
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avoid potential file confliction. That could be possible, for example |
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the linux-headers, both cross toolchain and target rootfs will emerge. Also |
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maybe simply mark it as provided would solve this problem. |
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The upstream's default embedded's make.conf only look for header files |
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and library from ROOT's path. So if some lowlevel package |
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looking for header file or library located at the toolchain's path, will |
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fail at complile stage. I come cross and idea, maybe it's possible to add |
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both SYSROOT and ROOT's path into compiler's looking path.So I just tweaked |
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the CFLAGS and LDFLAGS[3]. I have no idea whill there be |
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any problem with this. Still struggling and so far I got here. |
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Any idea about how to make embedded people's life easy would be great. |
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We may share the same problem. So I put the thread here, hope can drag |
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people's attention |
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|
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Best Regards |
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|
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Dennis 'Openfree' Yxun |
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|
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[1] |
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http://gentoo.openpandora.org/wiki/index.php/Create_Image/Installing_Crossdev_Tools |
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[2] |
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http://bazaar.launchpad.net/~gentoo-pandora-devs/gentoo-arm-pandora/main/files |
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[3] LDFLAGS=" -L${ROOT}/lib -L/${ROOT}/usr/lib \ |
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-L${SYSROOT}usr/lib -L${SYSROOT}lib \ |
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" |
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CFLAGS="-Os -pipe ${MARCH_TUNE} -fomit-frame-pointer \ |
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-I${SYSROOT}/usr/include \ |
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-I${SYSROOT}/include \ |
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-I${ROOT}usr/include/ \ |
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-I${ROOT}include/ \ |
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" |
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