On 18 July 2017 at 07:01, Dengke Du <dengke...@windriver.com> wrote: > using getrandom syscall on linux 3.17+, so when we compiling expat > -native > on the kernel older than 3.17, that would be failed. >
It's failing on Debian 8, which is kernel 4.9.0: | ../expat-2.2.2/lib/xmlparse.c:56:3: error: #error You do not have support for any sources of high quality entropy enabled. For end user security, that is probably not what you want. Your options include: * Linux + glibc >=2.25 (getrandom): HAVE_GETRANDOM, * Linux + glibc <2.25 (syscall SYS_getrandom): HAVE_SYSCALL_GETRANDOM, * BSD / macOS (arc4random_buf): HAVE_ARC4RANDOM_BUF, * libbsd (arc4random_buf): HAVE_ARC4RANDOM_BUF + HAVE_LIBBSD, * Windows (RtlGenRandom): _WIN32. If insist on not using any of these, bypass this error by defining XML_POOR_ENTROPY; you have been warned. For CMake, one way to pass the define is: cmake -DCMAKE_C_FLAGS="-pipe -O2 -DHAVE_SYSCALL_GETRANDOM" . If you have reasons to patch this detection code away or need changes to the build system, please open a bug. Thank you! ( https://autobuilder.yocto.io/builders/nightly-ppc/builds/379/steps/BuildImages/logs/stdio ) I suspect the detection code is well and truly broken. Ross
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