| ifeq ($(filter no-error,$(DEVOPTS)),) | 
 | DEVELOPER_CFLAGS += -Werror | 
 | endif | 
 | ifneq ($(filter pedantic,$(DEVOPTS)),) | 
 | DEVELOPER_CFLAGS += -pedantic | 
 | # don't warn for each N_ use | 
 | DEVELOPER_CFLAGS += -DUSE_PARENS_AROUND_GETTEXT_N=0 | 
 | endif | 
 | DEVELOPER_CFLAGS += -Wall | 
 | DEVELOPER_CFLAGS += -Wdeclaration-after-statement | 
 | DEVELOPER_CFLAGS += -Wformat-security | 
 | DEVELOPER_CFLAGS += -Wno-format-zero-length | 
 | DEVELOPER_CFLAGS += -Wold-style-definition | 
 | DEVELOPER_CFLAGS += -Woverflow | 
 | DEVELOPER_CFLAGS += -Wpointer-arith | 
 | DEVELOPER_CFLAGS += -Wstrict-prototypes | 
 | DEVELOPER_CFLAGS += -Wunused | 
 | DEVELOPER_CFLAGS += -Wvla | 
 |  | 
 | ifndef COMPILER_FEATURES | 
 | COMPILER_FEATURES := $(shell ./detect-compiler $(CC)) | 
 | endif | 
 |  | 
 | ifneq ($(filter clang4,$(COMPILER_FEATURES)),) | 
 | DEVELOPER_CFLAGS += -Wtautological-constant-out-of-range-compare | 
 | endif | 
 |  | 
 | ifneq ($(or $(filter gcc6,$(COMPILER_FEATURES)),$(filter clang4,$(COMPILER_FEATURES))),) | 
 | DEVELOPER_CFLAGS += -Wextra | 
 | # if a function is public, there should be a prototype and the right | 
 | # header file should be included. If not, it should be static. | 
 | DEVELOPER_CFLAGS += -Wmissing-prototypes | 
 | ifeq ($(filter extra-all,$(DEVOPTS)),) | 
 | # These are disabled because we have these all over the place. | 
 | DEVELOPER_CFLAGS += -Wno-empty-body | 
 | DEVELOPER_CFLAGS += -Wno-missing-field-initializers | 
 | DEVELOPER_CFLAGS += -Wno-sign-compare | 
 | DEVELOPER_CFLAGS += -Wno-unused-parameter | 
 | endif | 
 | endif | 
 |  | 
 | # uninitialized warnings on gcc 4.9.2 in xdiff/xdiffi.c and config.c | 
 | # not worth fixing since newer compilers correctly stop complaining | 
 | ifneq ($(filter gcc4,$(COMPILER_FEATURES)),) | 
 | ifeq ($(filter gcc5,$(COMPILER_FEATURES)),) | 
 | DEVELOPER_CFLAGS += -Wno-uninitialized | 
 | endif | 
 | endif |