Clean up commands so that more extensions can be built.

config/CONFIG.Host.Darwin

@@ -18,20 +18,23 @@ ARCH_CLASS = Darwin
 include $(EPICS_BASE)/config/CONFIG.Host.UnixCommon
 
 #
-# The config files are a real mess.  The following set of definitions
-# seems to work for all the weird ways in which the extensions makefile
-# fragments use them.
+# The config files are a real mess.  The following definitions seem to work
+# for all the weird ways in which the extensions makefile fragments use them.
 #
-ANSI = GCC
-CPLUSPLUS = c++
-CC = cc
-CXX= c++
-GCC = cc
+AR = ar
+ARCMD = $(AR) -rc $@
+ARFLAGS = rcv
+RANLIB = ranlib
+
+ANSI=GCC
+CPLUSPLUS=G++
 
 OP_SYS_CFLAGS += -no-cpp-precomp
 OP_SYS_INCLUDES = -I/sw/include -I/usr/X11R6/include
 OP_SYS_LDFLAGS += -L/sw/lib -L/usr/X11R6/lib
 
+ARCH_DEP_LDLIBS += -lreadline
+
 #
 # Compiler/linker problems prevent the use of shared libraries at the moment
 #
@@ -41,8 +44,8 @@ SHARED_LIBRARIES_Darwin = NO
 # Something like this will be needed once shared libraries are built
 #
 SHRLIB_SUFFIX = .dylib$(SHARED_LIBRARIES)
-GCC_SHRLIB_LDFLAGS_YES += -dynamiclib -flat_namespace
-G++_SHRLIB_LDFLAGS_YES += -dynamiclib -flat_namespace
+GCC_SHRLIB_LDFLAGS_YES += -dynamiclib
+G++_SHRLIB_LDFLAGS_YES += -dynamiclib
 
 #
 # Java