In this version I receive errors like
/usr/bin/ld: librevolvercoin_common.a(librevolvercoin_common_a-blake.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
I tried to write string
HARDENING+=-fPIC
in makefile.unix , but it didn't help, error is the same
This looks like cross-compiling problem. It seems it can't compile on 64bit machine that runs ubuntu.
However, you can try to change makefile.unix file - line 99 to:
xCXXFLAGS=-O2 $(EXT_OPTIONS) -pthread -fPIC -Wall -Wextra -Wno-ignored-qualifiers -Wformat -Wformat-security -Wno-unused-parameter \
And try again