Bugzilla bug 335275: compile with the GCC flag

-Werror-implicit-function-declaration. r=nelsonb.
Modified files: Linux.mk SunOS5.mk

security/coreconf/Linux.mk

@@ -155,7 +155,7 @@ ifeq ($(USE_PTHREADS),1)
 OS_PTHREAD = -lpthread 
 endif
 
-OS_CFLAGS		= $(DSO_CFLAGS) $(OS_REL_CFLAGS) $(ARCHFLAG) -ansi -Wall -pipe -DLINUX -Dlinux -D_POSIX_SOURCE -D_BSD_SOURCE -DHAVE_STRERROR
+OS_CFLAGS		= $(DSO_CFLAGS) $(OS_REL_CFLAGS) $(ARCHFLAG) -ansi -Wall -Werror-implicit-function-declaration -pipe -DLINUX -Dlinux -D_POSIX_SOURCE -D_BSD_SOURCE -DHAVE_STRERROR
 OS_LIBS			= $(OS_PTHREAD) -ldl -lc
 
 ifdef USE_PTHREADS

security/coreconf/SunOS5.mk

@@ -94,7 +94,7 @@ DEFAULT_COMPILER = cc
 
 ifdef NS_USE_GCC
 	CC         = gcc
-	OS_CFLAGS += -Wall -Wno-format
+	OS_CFLAGS += -Wall -Wno-format -Werror-implicit-function-declaration
 	CCC        = g++
 	CCC       += -Wall -Wno-format
 	ASFLAGS	  += -x assembler-with-cpp