Hey All, I'm trying to install MPICH on a set of National Instruments myRIOs. They run the angstrom kernel. Currently when I run the configuration for the build it errors at the AR interface because the ar function is missing -r for replacement in archives. This is a busy box implementation of ar. It doesn't look like busy box has a new implementation. So i'm looking at two options avoiding the archiver if that is an option or download a new ar function. The myRIO uses a armv7a processor. Can I get by with disabling the archiver interface? skiming readme looks like no option to do so Can I disable the check on the archiver interface with --disable-ar interface? Another ar function? Snippet of config.log below configure:6603: checking whether to enable maintainer-specific portions of Makefiles configure:6612: result: yes configure:6676: checking for ar configure:6692: found /usr/bin/ar configure:6703: result: ar configure:6729: checking the archiver (ar) interface configure:6745: gcc -c conftest.c >&5 configure:6745: $? = 0 configure:6747: ar cru libconftest.a conftest.o >&5 ar: invalid option -- 'r' BusyBox v1.19.4 (2013-06-20 07:58:10 CDT) multi-call binary. Usage: ar [-o] [-v] [-p] [-t] [-x] ARCHIVE FILES configure:6750: $? = 1 configure:6756: ar -NOLOGO -OUT:conftest.lib conftest.o >&5 ar: invalid option -- 'N' BusyBox v1.19.4 (2013-06-20 07:58:10 CDT) multi-call binary. Usage: ar [-o] [-v] [-p] [-t] [-x] ARCHIVE FILES configure:6759: $? = 1 configure:6778: result: unknown configure:6794: error: could not determine ar interface ## ---------------- ## ## Cache variables. ## ## ---------------- ## ac_cv_c_compiler_gnu=yes