switch-l4t-atf/make_helpers/windows.mk
Sandrine Bailleux 403973c95d Give user's compiler flags precedence over default ones
The user can provide additional CFLAGS to use when building TF.
However, these custom CFLAGS are currently prepended to the
standard CFLAGS that are hardcoded in the TF build system. This
is an issue because when providing conflicting compiler flags
(e.g. different optimisations levels like -O1 and -O0), the last
one on the command line usually takes precedence. This means that
the user flags get overriden.

To address this problem, this patch separates the TF CFLAGS from
the user CFLAGS. The former are now stored in the TF_CFLAGS make
variable, whereas the CFLAGS make variable is untouched and reserved
for the user. The order of the 2 sets of flags is enforced when
invoking the compiler.

Fixes ARM-Software/tf-issues#350

Change-Id: Ib189f44555b885f1dffbec6015092f381600e560
2016-04-14 16:16:37 +01:00

110 lines
4.0 KiB
Makefile

#
# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# Neither the name of ARM nor the names of its contributors may be used
# to endorse or promote products derived from this software without specific
# prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# OS specific parts for builds in a Windows_NT environment. The
# environment variable OS is set to Windows_NT on all modern Windows platforms
# Include generic windows command definitions.
ifndef WINDOWS_MK
WINDOWS_MK := $(lastword $(MAKEFILE_LIST))
ECHO_BLANK_LINE := @cmd /c echo.
DIR_DELIM := $(strip \)
BIN_EXT := .exe
PATH_SEP := ;
# For some Windows native commands there is a problem with the directory delimiter.
# Make uses / (slash) and the commands expect \ (backslash)
# We have to provide a means of translating these, so we define local functions.
# ${1} is the file to be copied.
# ${2} is the destination file name.
define SHELL_COPY
$(eval tmp_from_file:=$(subst /,\,${1}))
$(eval tmp_to_file:=$(subst /,\,${2}))
copy "${tmp_from_file}" "${tmp_to_file}"
endef
# ${1} is the directory to be copied.
# ${2} is the destination directory path.
define SHELL_COPY_TREE
$(eval tmp_from_dir:=$(subst /,\,${1}))
$(eval tmp_to_dir:=$(subst /,\,${2}))
xcopy /HIVE "${tmp_from_dir}" "${tmp_to_dir}"
endef
# ${1} is the file to be deleted.
define SHELL_DELETE
$(eval tmp_del_file:=$(subst /,\,${*}))
-@if exist $(tmp_del_file) del /Q $(tmp_del_file)
endef
# ${1} is a space delimited list of files to be deleted.
define SHELL_DELETE_ALL
$(eval $(foreach filename,$(wildcard ${1}),$(call DELETE_IF_THERE,${filename})))
endef
# ${1} is the directory to be generated.
# ${2} is optional, and allows prerequisites to be specified.
define MAKE_PREREQ_DIR
${1} : ${2}
$(eval tmp_dir:=$(subst /,\,${1}))
-@if not exist "$(tmp_dir)" mkdir "${tmp_dir}"
endef
# ${1} is the directory to be removed.
define SHELL_REMOVE_DIR
$(eval tmp_dir:=$(subst /,\,${1}))
-@if exist "$(tmp_dir)" rd /Q /S "$(tmp_dir)"
endef
endif
# Because git is not available from CMD.EXE, we need to avoid
# the BUILD_STRING generation which uses git.
# For now we use "development build".
# This can be overridden from the command line or environment.
BUILD_STRING ?= development build
# The DOS echo shell command does not strip ' characters from the command
# parameters before printing. We therefore use an alternative method invoked
# by defining the MAKE_BUILD_STRINGS macro.
BUILT_TIME_DATE_STRING = const char build_message[] = "Built : "${BUILD_MESSAGE_TIMESTAMP};
VERSION_STRING_MESSAGE = const char version_string[] = "${VERSION_STRING}";
define MAKE_BUILD_STRINGS
@echo $$(BUILT_TIME_DATE_STRING) $$(VERSION_STRING_MESSAGE) | \
$$(CC) $$(TF_CFLAGS) $$(CFLAGS) -x c - -o $1
endef