now supports build with gnu compilers

config/CONFIG.Unix.sun4

@@ -6,7 +6,7 @@
 # Compiler and utility invocation (supply path to compiler here)
 #   (with warning flags built in)
 #  Paths to compilers
-GCC = gcc
+GCC = gcc 
 ACC = /usr/lang/acc
 SUNCC = cc
 AR = ar
@@ -26,10 +26,10 @@ ACC_STRICT_INVOKE_W_NO = $(ACC) -Xc -w
 ACC_STRICT_INVOKE_W_YES = $(ACC) -Xc -vc
 SUNCC_TRAD_INVOKE_W_NO = $(SUNCC) -w
 SUNCC_TRAD_INVOKE_W_YES = $(SUNCC)
-GCC_ANSI_INVOKE_W_NO = $(GCC) -ansi -w
-GCC_ANSI_INVOKE_W_YES = $(GCC) -ansi
-GCC_STRICT_INVOKE_W_NO = $(GCC) -ansi -pedantic
-GCC_STRICT_INVOKE_W_YES = $(GCC) -ansi -Wall -pedantic
+GCC_ANSI_INVOKE_W_NO = $(GCC) -ansi -w -D__USE_FIXED_PROTOTYPES__
+GCC_ANSI_INVOKE_W_YES = $(GCC) -ansi -D__USE_FIXED_PROTOTYPES__
+GCC_STRICT_INVOKE_W_NO = $(GCC) -ansi -pedantic -D__USE_FIXED_PROTOTYPES__
+GCC_STRICT_INVOKE_W_YES = $(GCC) -ansi -Wall -pedantic -D__USE_FIXED_PROTOTYPES__
 GCC_TRAD_INVOKE_W_NO = $(GCC) -traditional -w
 GCC_TRAD_INVOKE_W_YES = $(GCC) -traditional
  
@@ -67,8 +67,21 @@ ifdef SPECIAL_LANG
 SPECIAL_LDFLAGS = -L$(SPECIAL_LANG)
 endif
 UNIX_LDFLAGS = -L$(EPICS_BASE_LIB)
+
+#
+# The three nested if stmnts here document the fact that current
+# organization here requires that we must use gcc for
+# all compilation or not at all (no mixed compiler compilation)
+#
 UNIX_LDLIBS = -lm
- 
+#ifeq ($(ANSI), GCC)
+#ifeq ($(STANDARD), GCC)
+#ifeq ($(CPLUSPLUS), G++)
+UNIX_LDLIBS += -liberty
+#endif
+#endif
+#endif
+
 ARCH_DEP_CFLAGS = -DSUNOS4
 ARCH_DEP_CCFLAGS = $(ARCH_DEP_CFLAGS)
 UNIX_CFLAGS = $(UNIX_SFLAGS) $(USR_INCLUDES) $(UNIX_INCLUDES) $(OP_SYS_FLAGS)