Ubuntu has a few cross compile toolchains available, for example:<\/p>\n
sudo apt install gcc-arm-linux-gnueabi # for arm chips\r\nsudo apt install gcc-arm-linux-gnueabihf # for arm chips with floating point registers<\/code><\/pre>\nCrosstool-NG is a great help in getting the tougher cross compile toolchains built. I was targeting a specific ARM 926EJ-S chipset, and the vendor had their own toolchain<\/a>.<\/p>\nTrying to cross compile on newer versions of ubuntu was a headache though. I would get “FATAL: kernel tool old” errors from the executable on the target system, and the autotools configure option to limit kernel version (–enable-kernel=…) did not fix it.<\/p>\n
In the end, I was able to build zlib and openssl and libwebsockets statically, with a Crosstool-NG toolchain on an older ubuntu, but had to deal with this glibc bug<\/a> by explicitly specifying the system lib folder, or getaddrinfo, gethostbyname, and all other NSS based functions just plain old failed (lost some hair to that fine feature – cmon RMS and Drepper, get along better so your code doesn’t stink…):<\/p>\nLD_LIBRARY_PATH=\/lib .\/my_static_app<\/code><\/pre>\n