Hi Andreas, I'm trying to implement multilib support for ARC port of Glibc and for that we seem to need to have unique slibdir/rtlddir pair per each machine flavor. In our case these are at least: - ARC700 (legacy ARCompact architecture) - ARC HS38 (new gen ARCv2 architecture) - ARC HS38 with hardware floating-point - ARC HS48 (binary-compatible with HS38 but with different pipeline so compiler schedules instructions differently) - eventually there'll be newer generations like ARCv3/v4 etc Given we have in GCC a dedicated "-mcpu" value for each of items above my first thought was to "automatically" setup slibdir/rtlddir based on "-mcpu" value passed in CC during configuration. Something like that: ---------------------------------->8------------------------------------ +++ b/sysdeps/unix/sysv/linux/arc/configure.ac @@ -2,3 +2,10 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/unix/sysv/linux/arc. arch_minimum_kernel=3.9.0 + +# Extract "-mcpu=xxx" value from CC to install libs in a separate folder +arc_mcpu=[`echo $CC | grep -Po '\-mcpu=\K[^ ]+'`] + +if test "$arc_mcpu" != "" ; then + LIBC_SLIBDIR_RTLDDIR([lib/${arc_mcpu}], [lib/${arc_mcpu}]) +fi ---------------------------------->8------------------------------------ But apparently that doesn't work due to your change [1] in commit 128c43a2d630 ("LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes"). I guess mentioned change is not supposed to be reverted but then how do you think it's possible [if at all] to implement that kind of "automatic" setup of slibdir/rtlddir? [1] https://sourceware.org/git/?p=glibc.git;a=commit;h=128c43a2d630 -Alexey _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc