Remove the setting of the FC and F77 environment variables, instead sed the COMMON_OPT in Makefile.rule to include the $(get_abi_CFLAGS). Add get_openblas_abi_cflags and get_openblas_abi_fflags, call them to create the pkg-config ${profname}.pc files. Call get_openblas_abi_cflags to obtain the defines, then remove the OPENBLAS_ at the start, and sed these into COMMON_OPT in Makefile.rule, as USE64BITINT was removed by the patch openblas-0.2.11-openblas_config_header_same_between_ABIs.patch that is required to ensure the openblas_config.h header file is the same between ABIs.