[OpenWrt-Devel] BB SDKs are too lean (no libffi, etc.)

[Jo-Philipp Wich]

Hi Paul,

the trick is to add the OpenWrt source as package feed, this way you 
gain access to libffi and any other core packages:

$ wget https://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2.tar.bz2
[...]
$ tar -xjf OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2.tar.bz2 
$ cd OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2/
$ echo "src-git base git://git.openwrt.org/14.07/openwrt.git" >> feeds.conf.default
$ ./scripts/feeds update
[...]
$ ./scripts/feeds install -d m libffi
[...]
$ make package/libffi/compile
$ ls -l bin/ar71xx/packages/*/
bin/ar71xx/packages/base/:
total 568
-rw-r--r-- 1 jow jow   9340 Oct  7 10:49 ldconfig_0.9.33.2-1_ar71xx.ipk
-rw-r--r-- 1 jow jow   5375 Oct  7 10:49 ldd_0.9.33.2-1_ar71xx.ipk
-rw-r--r-- 1 jow jow 224825 Oct  7 10:49 libc_0.9.33.2-1_ar71xx.ipk
-rw-r--r-- 1 jow jow  32424 Oct  7 10:49 libgcc_4.8-linaro-1_ar71xx.ipk
-rw-r--r-- 1 jow jow  31823 Oct  7 10:49 libpthread_0.9.33.2-1_ar71xx.ipk
-rw-r--r-- 1 jow jow   5578 Oct  7 10:49 librt_0.9.33.2-1_ar71xx.ipk
-rw-r--r-- 1 jow jow 256572 Oct  7 10:49 libstdcpp_4.8-linaro-1_ar71xx.ipk
-rw-r--r-- 1 jow jow    755 Oct  7 10:49 libthread-db_0.9.33.2-1_ar71xx.ipk

bin/ar71xx/packages/packages/:
total 8
-rw-r--r-- 1 jow jow 6161 Oct  7 10:49 libffi_3.0.13-1_ar71xx.ipk


~ Jow
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