-# Copyright (C) 1991-2014 Free Software Foundation, Inc.
+# Copyright (C) 1991-2015 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
LDFLAGS-rtld += $(hashstyle-LDFLAGS)
endif
+# Command to run after every final link (executable or shared object).
+# This is invoked with $(call after-link,...), so it should operate on
+# the file $1. This can be set to do some sort of post-processing on
+# binaries, or to perform some sort of static sanity check.
+ifndef after-link
+after-link =
+endif
+
# Command for linking PIE programs with the C library.
ifndef +link-pie
+link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
$(common-objpfx)libc% $(+postinit),$^) \
$(link-extra-libs)
+link-pie-after-libc = $(+postctorS) $(+postinit)
-+link-pie = $(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) \
- $(+link-pie-after-libc)
-+link-pie-tests = $(+link-pie-before-libc) $(rtld-tests-LDFLAGS) \
- $(link-libc-tests) $(+link-pie-after-libc)
+define +link-pie
+$(+link-pie-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-pie-after-libc)
+$(call after-link,$@)
+endef
+define +link-pie-tests
+$(+link-pie-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
+ $(+link-pie-after-libc)
+$(call after-link,$@)
+endef
endif
# Command for statically linking programs with the C library.
ifndef +link-static
$(common-objpfx)libc% $(+postinit),$^) \
$(link-extra-libs-static)
+link-static-after-libc = $(+postctorT) $(+postinit)
-+link-static = $(+link-static-before-libc) $(link-libc-static) \
- $(+link-static-after-libc)
-+link-static-tests = $(+link-static-before-libc) $(link-libc-static-tests) \
- $(+link-static-after-libc)
+define +link-static
+$(+link-static-before-libc) $(link-libc-static) $(+link-static-after-libc)
+$(call after-link,$@)
+endef
+define +link-static-tests
+$(+link-static-before-libc) $(link-libc-static-tests) $(+link-static-after-libc)
+$(call after-link,$@)
+endef
endif
# Commands for linking programs with the C library.
ifndef +link
$(common-objpfx)libc% $(+postinit),$^) \
$(link-extra-libs)
+link-after-libc = $(+postctor) $(+postinit)
-+link = $(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) \
- $(+link-after-libc)
-+link-tests = $(+link-before-libc) $(rtld-tests-LDFLAGS) \
- $(link-libc-tests) $(+link-after-libc)
+define +link
+$(+link-before-libc) $(rtld-LDFLAGS) $(link-libc) $(+link-after-libc)
+$(call after-link,$@)
+endef
+define +link-tests
+$(+link-before-libc) $(rtld-tests-LDFLAGS) $(link-libc-tests) \
+ $(+link-after-libc)
+$(call after-link,$@)
+endef
else
+link = $(+link-static)
+link-tests = $(+link-static-tests)
ifndef test-wrapper-env
test-wrapper-env = $(test-wrapper) env
endif
+# Likewise, but the program's environment will be empty except for any
+# explicit <variable>=<value> assignments preceding the program name.
+ifndef test-wrapper-env-only
+test-wrapper-env-only = $(test-wrapper) env -i
+endif
# Whether to run test programs built for the library's host system.
ifndef run-built-tests
+gccwarn := -Wall -Wwrite-strings -Winline
endif
+gccwarn += -Wundef
-+gccwarn-c = -Wstrict-prototypes -Werror=implicit-function-declaration
+ifeq ($(enable-werror),yes)
++gccwarn += -Werror -Wno-error=undef
+endif
++gccwarn-c = -Wstrict-prototypes
# We do not depend on the address of constants in different files to be
# actually different, so allow the compiler to merge them all.
# of many little headers in the include directory.
libio-include = -I$(..)libio
+# List of non-library modules that we build.
+built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
+ libSegFault libpcprofile librpcsvc locale-programs \
+ memusagestat nonlib nscd extramodules libnldbl
+
+# We don't include libc-modules.h when these targets are being built. These
+# targets don't (and will likely never need to) use the IS_IN facility. In
+# fact, shlib-versions should not use it because that will create a circular
+# dependency as libc-modules.h is generated from shlib-versions.
+skip-module-cppflags = shlib-versions.v.i Versions.v.i
+
in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
$(libof-$(<F)) \
$(libof-$(@F)) \
libc))
+module-cppflags-real = -include $(common-objpfx)libc-modules.h \
+ -DMODULE_NAME=$(in-module)
+
+# We don't need libc-modules.h and the MODULE_NAME definition for
+# shlib-version.v.i.
+module-cppflags = $(if $(filter $(@F),$(skip-module-cppflags)), \
+ ,$(module-cppflags-real))
+
# These are the variables that the implicit compilation rules use.
# Note that we can't use -std=* in CPPFLAGS, because it overrides
# the implicit -lang-asm and breaks cpp behavior for .S files--notably
# it causes cpp to stop predefining __ASSEMBLER__.
CPPFLAGS = $(config-extra-cppflags) $(CPPUNDEFS) $(CPPFLAGS-config) \
$($(subdir)-CPPFLAGS) \
- $(+includes) $(defines) \
+ $(+includes) $(defines) $(module-cppflags) \
-include $(..)include/libc-symbols.h $(sysdep-CPPFLAGS) \
- $(CPPFLAGS-$(suffix $@)) -DIN_MODULE=MODULE_$(in-module) \
+ $(CPPFLAGS-$(suffix $@)) \
$(foreach lib,$(libof-$(basename $(@F))) \
$(libof-$(<F)) $(libof-$(@F)),$(CPPFLAGS-$(lib))) \
$(CPPFLAGS-$(<F)) $(CPPFLAGS-$(@F)) $(CPPFLAGS-$(basename $(@F)))
ifndef ASFLAGS
ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
endif
-ASFLAGS += $(ASFLAGS-config) $(asflags-cpu)
+ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
ifndef BUILD_CC
BUILD_CC = $(CC)
postclean-generated += soversions.mk soversions.i \
shlib-versions.v shlib-versions.v.i
+before-compile += $(common-objpfx)libc-modules.h
+ifeq ($(soversions.mk-done),t)
+# Generate a header with macro definitions for use with the IS_IN macro.
+# These are the possible values for the MODULE_NAME macro defined when building
+# sources, to identify which module the translation unit is going to be built
+# into.
+$(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @:
+$(common-objpfx)libc-modules.stmp: $(..)scripts/gen-libc-modules.awk \
+ $(common-objpfx)soversions.i
+ $(AWK) -v buildlist="$(subst -,_,$(built-modules))" -f $^ > ${@:stmp=T}
+ $(move-if-change) ${@:stmp=T} ${@:stmp=h}
+ touch $@
+
+endif
+
+common-generated += libc-modules.h libc-modules.stmp
+
# The name under which the run-time dynamic linker is installed.
# We are currently going for the convention that `/lib/ld.so.1'
# names the SVR4/ELF ABI-compliant dynamic linker.
projects / thirdparty / glibc.git / blobdiff