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########################################################################### ###
#@Title Define global variables
#@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
#@Description This file is read once at the start of the build, after reading
# in config.mk. It should define the non-MODULE_* variables used
# in commands, like ALL_CFLAGS
#@License Dual MIT/GPLv2
#
# The contents of this file are subject to the MIT license as set out below.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# Alternatively, the contents of this file may be used under the terms of
# the GNU General Public License Version 2 ("GPL") in which case the provisions
# of GPL are applicable instead of those above.
#
# If you wish to allow use of your version of this file only under the terms of
# GPL, and not to allow others to use your version of this file under the terms
# of the MIT license, indicate your decision by deleting the provisions above
# and replace them with the notice and other provisions required by GPL as set
# out in the file called "GPL-COPYING" included in this distribution. If you do
# not delete the provisions above, a recipient may use your version of this file
# under the terms of either the MIT license or GPL.
#
# This License is also included in this distribution in the file called
# "MIT-COPYING".
#
# EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
# PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
# BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
### ###########################################################################
ifeq ($(BUILD),debug)
COMMON_USER_FLAGS := -O0
else
OPTIM ?= -O2
COMMON_USER_FLAGS := $(OPTIM)
endif
# FIXME: We should probably audit the driver for aliasing
#
COMMON_USER_FLAGS += -fno-strict-aliasing
# We always enable debugging. Either the release binaries are stripped
# and the symbols put in the symbolpackage, or we're building debug.
#
COMMON_USER_FLAGS += -g
# These flags are used for kernel, User C and User C++
#
COMMON_FLAGS = -W -Wall
# Some GCC warnings are C only, so we must mask them from C++
#
COMMON_CFLAGS := $(COMMON_FLAGS) \
-Wdeclaration-after-statement -Wno-format-zero-length \
-Wmissing-prototypes -Wstrict-prototypes
# Additional warnings, and optional warnings.
#
WARNING_CFLAGS := \
-Wpointer-arith -Wunused-parameter \
-Wmissing-format-attribute \
$(call cc-option,-Wno-missing-field-initializers) \
$(call cc-option,-fdiagnostics-show-option)
ifeq ($(W),1)
WARNING_CFLAGS += \
$(call cc-option,-Wbad-function-cast) \
$(call cc-option,-Wcast-qual) \
$(call cc-option,-Wcast-align) \
$(call cc-option,-Wconversion) \
$(call cc-option,-Wdisabled-optimization) \
$(call cc-option,-Wlogical-op) \
$(call cc-option,-Wmissing-declarations) \
$(call cc-option,-Wmissing-include-dirs) \
$(call cc-option,-Wnested-externs) \
$(call cc-option,-Wold-style-definition) \
$(call cc-option,-Woverlength-strings) \
$(call cc-option,-Wpacked) \
$(call cc-option,-Wpacked-bitfield-compat) \
$(call cc-option,-Wpadded) \
$(call cc-option,-Wredundant-decls) \
$(call cc-option,-Wshadow) \
$(call cc-option,-Wswitch-default) \
$(call cc-option,-Wvla) \
$(call cc-option,-Wwrite-strings)
endif
WARNING_CFLAGS += \
$(call cc-optional-warning,-Wunused-but-set-variable)
HOST_WARNING_CFLAGS := \
-Wpointer-arith -Wunused-parameter \
-Wmissing-format-attribute \
$(call host-cc-option,-Wno-missing-field-initializers) \
$(call host-cc-option,-fdiagnostics-show-option)
ifeq ($(W),1)
HOST_WARNING_CFLAGS += \
$(call host-cc-option,-Wbad-function-cast) \
$(call host-cc-option,-Wcast-qual) \
$(call host-cc-option,-Wcast-align) \
$(call host-cc-option,-Wconversion) \
$(call host-cc-option,-Wdisabled-optimization) \
$(call host-cc-option,-Wlogical-op) \
$(call host-cc-option,-Wmissing-declarations) \
$(call host-cc-option,-Wmissing-include-dirs) \
$(call host-cc-option,-Wnested-externs) \
$(call host-cc-option,-Wold-style-definition) \
$(call host-cc-option,-Woverlength-strings) \
$(call host-cc-option,-Wpacked) \
$(call host-cc-option,-Wpacked-bitfield-compat) \
$(call host-cc-option,-Wpadded) \
$(call host-cc-option,-Wredundant-decls) \
$(call host-cc-option,-Wshadow) \
$(call host-cc-option,-Wswitch-default) \
$(call host-cc-option,-Wvla) \
$(call host-cc-option,-Wwrite-strings)
endif
HOST_WARNING_CFLAGS += \
$(call host-cc-optional-warning,-Wunused-but-set-variable)
KBUILD_WARNING_CFLAGS := \
-Wno-unused-parameter -Wno-sign-compare
KBUILD_WARNING_CFLAGS += \
$(call kernel-cc-optional-warning,-Wbad-function-cast) \
$(call kernel-cc-optional-warning,-Wcast-qual) \
$(call kernel-cc-optional-warning,-Wcast-align) \
$(call kernel-cc-optional-warning,-Wconversion) \
$(call kernel-cc-optional-warning,-Wdisabled-optimization) \
$(call kernel-cc-optional-warning,-Wlogical-op) \
$(call kernel-cc-optional-warning,-Wmissing-declarations) \
$(call kernel-cc-optional-warning,-Wmissing-include-dirs) \
$(call kernel-cc-optional-warning,-Wnested-externs) \
$(call kernel-cc-optional-warning,-Wno-missing-field-initializers) \
$(call kernel-cc-optional-warning,-Wold-style-definition) \
$(call kernel-cc-optional-warning,-Woverlength-strings) \
$(call kernel-cc-optional-warning,-Wpacked) \
$(call kernel-cc-optional-warning,-Wpacked-bitfield-compat) \
$(call kernel-cc-optional-warning,-Wpadded) \
$(call kernel-cc-optional-warning,-Wredundant-decls) \
$(call kernel-cc-optional-warning,-Wshadow) \
$(call kernel-cc-optional-warning,-Wswitch-default) \
$(call kernel-cc-optional-warning,-Wvla) \
$(call kernel-cc-optional-warning,-Wwrite-strings)
# User C only
#
ALL_CFLAGS := \
$(COMMON_USER_FLAGS) $(COMMON_CFLAGS) $(WARNING_CFLAGS) \
$(SYS_CFLAGS)
ALL_HOST_CFLAGS := \
$(COMMON_USER_FLAGS) $(COMMON_CFLAGS) $(HOST_WARNING_CFLAGS)
# User C++ only
#
ALL_CXXFLAGS := \
$(COMMON_USER_FLAGS) $(COMMON_FLAGS) \
-fno-rtti -fno-exceptions \
-Wpointer-arith -Wunused-parameter \
$(SYS_CXXFLAGS)
ALL_HOST_CXXFLAGS := \
$(COMMON_USER_FLAGS) $(COMMON_CFLAGS) -Wall
# User C and C++
#
# NOTE: ALL_HOST_LDFLAGS should probably be using -rpath-link too, and if we
# ever need to support building host shared libraries, it's required.
#
# We can't use it right now because we want to support non-GNU-compatible
# linkers like the Darwin 'ld' which doesn't support -rpath-link.
#
ALL_HOST_LDFLAGS := -L$(HOST_OUT)
ALL_LDFLAGS := -L$(TARGET_OUT) -Xlinker -rpath-link=$(TARGET_OUT)
ifneq ($(strip $(TOOLCHAIN)),)
ALL_LDFLAGS += -L$(TOOLCHAIN)/lib -Xlinker -rpath-link=$(TOOLCHAIN)/lib
endif
ifneq ($(strip $(LINKER_RPATH)),)
ALL_LDFLAGS += $(addprefix -Xlinker -rpath=,$(LINKER_RPATH))
endif
ALL_LDFLAGS += $(SYS_LDFLAGS)
# Kernel C only
#
ALL_KBUILD_CFLAGS := $(COMMON_CFLAGS) $(KBUILD_WARNING_CFLAGS) \
$(call kernel-cc-option,-Wno-type-limits) \
$(call kernel-cc-option,-Wno-pointer-arith) \
$(call kernel-cc-option,-Wno-aggregate-return) \
$(call kernel-cc-option,-Wno-unused-but-set-variable)
# This variable contains a list of all modules built by kbuild
ALL_KBUILD_MODULES :=
# This variable contains a list of all modules which contain C++ source files
ALL_CXX_MODULES :=
# Toolchain triple for cross environment
CROSS_TRIPLE := $(patsubst %-,%,$(CROSS_COMPILE))
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