driver.makefile: Cleanup support for older base versions

require-ess/tools/driver.makefile

@@ -114,16 +114,6 @@ HEADERS=
 BASH_ENV=
 ENV=
 
-# There is no 64 bit support before 3.14.12
-ifneq ($(filter %_64,$(EPICS_HOST_ARCH)),)
-ifeq ($(wildcard $(EPICS_BASE)/lib/$(EPICS_HOST_ARCH)),)
-EPICS_HOST_ARCH:=$(patsubst %_64,%,$(EPICS_HOST_ARCH))
-USR_CFLAGS_$(EPICS_HOST_ARCH) += -m32
-USR_CXXFLAGS_$(EPICS_HOST_ARCH) += -m32
-USR_LDFLAGS_$(EPICS_HOST_ARCH) += -m32
-endif
-endif
-
 # Default target is "build" for all versions.
 # Don't install anything (different from default EPICS make rules).
 default: build
@@ -194,13 +184,7 @@ USR_CPPFLAGS+=-DUSE_TYPED_RSET
 endif
 
 SHRLIB_VERSION=
-# do not link *everything* with readline (and curses)
-COMMANDLINE_LIBRARY =
-# Relax (3.13) cross compilers (default is STRICT) to allow sloppier syntax.
-CMPLR=STD
-GCC_STD = $(GCC)
-CXXCMPLR=ANSI
-G++_ANSI = $(G++) -ansi
+
 OBJ=.o
 
 COMMON_DIR = O.${EPICSVERSION}_Common