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#-*- mode: makefile; indent-tabs-mode: t; coding: utf-8; show-trailing-whitespace: t -*-
# Makefile.global
# Copyright 2022 Angelo Rossi <angelo.rossi.homelab@gmail.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. 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.
#
# 3. Neither the name of the copyright holder 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.
#
# Get the operating system name. If this is Cygwin, the .d files will be
# munged to convert c: into /cygdrive/c so that "make" will be happy with the
# auto-generated dependencies.
#
# The command for calling the compiler.
ifeq (${shell uname},linux)
AS=${shell which as}
CC=${shell which gcc}
CXX=${shell which g++}
LD=${shell which ld}
OBJCOPY=${shell which objcopy}
OBJDUMP=${shell which objdump}
AR=${shell which ar}
NM=${shell which nm}
else
ifeq (${shell uname},OpenBSD)
AS=${shell which gas}
CC=${shell which egcc}
CXX=${shell which eg++}
LD=${shell which ld}
OBJCOPY=${shell which objcopy}
OBJDUMP=${shell which objdump}
AR=${shell which egcc-ar}
NM=${shell which egcc-nm}
endif
endif
LINKER=${CXX}
# The flags passed to the assembler.
AS_FLAGS=
ifdef ARCH
AS_FLAGS+=-march=${ARCH}
endif
# The flags passed to the c compiler.
CC_FLAGS=-O0 \
-Wall \
-std=c99 \
-pthread \
-c
# The flags passed to the c++ compiler.
CXX_FLAGS=-O0 \
-Wall \
-std=gnu++11 \
-pthread \
-c
ifdef WITH_OVER1
CXX_FLAGS+=-DWITH_OVER1
endif
ifdef WITH_OVER20
CXX_FLAGS+=-DWITH_OVER20
endif
ifdef WITH_OVER51
CXX_FLAGS+=-DWITH_OVER51
endif
# The flags passed to the linker.
LD_SCRIPT_FLAGS=
ifneq (${LINKER_SCRIPT},)
LD_SCRIPT_FLAGS+=-T ${SCRIPTS_PATH}/${LINKER_SCRIPT}.lnk
endif
# Specs files.
SPECS_FILES=
ifneq (${SPECS_FILES},)
SPECS_FLAGS=${patsubst %,--specs=%,${subst :, ,${SPECS_FILES}}}
else
SPECS_FLAGS=
endif
LD_FLAGS=
LD_FLAGS+=-Wl,--start-group \
${LD_SCRIPT_FLAGS} \
${SPECS_FLAGS} \
-Wl,-Map=${TOOLCHAIN}/${TARGET}.map \
-Wl,--end-group
# ar most common flags.
AR_FLAGS=-cr
# objdump most common flags.
OBJDUMP_FLAGS= -h \
-EL \
-s \
-S \
-d
# objcopy most common flags.
OBJCOPY_FLAGS= -S \
-R .data
# Get the location of libgcc.a, libc.a, libstdc++ and
# libm.a from the GCC front-end.
LIBGCC=${shell ${CC} ${CC_FLAGS} -print-libgcc-file-name}
LIBC=${shell ${CC} ${CC_FLAGS} -print-file-name=libc.a}
LIBM=${shell ${CC} ${CC_FLAGS} -print-file-name=libm.a}
LIBPTHREAD=${shell ${CC} ${CC_FLAGS} --print-file-name=libpthread.a}
LIBSTDCXX=${shell ${CXX} ${CXX_FLAGS} --print-file-name=libstdc++.a}
# Libraries to link.
LIBRARIES=pthread
# Tell the compiler to include debugging information if the DEBUG environment
# variable is set.
ifneq (${DEBUG},)
AS_FLAGS+=-ggdb3
CC_FLAGS+=-ggdb3 -DDEBUG
CXX_FLAGS+=-ggdb3 -DDEBUG
LD_FLAGS+=-ggdb3
endif
# Add the include file paths to AS_FLAGS, CC_FLAGS and CXX_FLAGS.
AS_FLAGS+=${patsubst %,-I%,${subst :, ,${INCLUDES_PATH}}}
CC_FLAGS+=${patsubst %,-I%,${subst :, ,${INCLUDES_PATH}}}
CXX_FLAGS+=${patsubst %,-I%,${subst :, ,${INCLUDES_PATH}}}
LD_FLAGS+=-pthread
ifneq (${LIBRARIES_PATH},)
LD_FLAGS+=${patsubst %,-L%,${subst :, ,${LIBRARIES_PATH}}}
endif
ifneq (${LIBRARIES},)
LD_FLAGS+=${patsubst %,-l%,${subst :, ,${LIBRARIES}}}
endif
# Rule for building the object file from each assembly source files.
${TOOLCHAIN}/%.o: %.S
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ AS ] ${<}"; \
else \
echo "${AS} ${AS_FLAGS} ${<} -o ${@}"; \
fi
@${AS} ${AS_FLAGS} ${<} -o ${@}
# Rule for building the object file from each C source file.
${TOOLCHAIN}/%.o: %.c
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ CC ] ${<}"; \
else \
echo ${CC} ${CC_FLAGS} -o ${@} ${<}; \
fi
@${CC} ${CC_FLAGS} -o ${@} ${<}
${TOOLCHAIN}/%.o: %.cpp
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ CPP ] ${<}"; \
else \
echo ${CXX} ${CXX_FLAGS} -o ${@} ${<}; \
fi
@${CXX} ${CXX_FLAGS} -o ${@} ${<}
# Rule for creating an object library.
${TOOLCHAIN}/%.a:
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ AR ] ${@}"; \
else \
echo ${AR} ${AR_FLAGS} ${@} ${^}; \
fi
@${AR} ${AR_FLAGS} ${@} ${^}
# Rule for linking the application.
${TOOLCHAIN}/%:
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ LD ] ${@}"; \
else \
echo ${LINKER} $(filter %.o %.a, ${^}) \
${LD_FLAGS} \
-o ${@}; \
fi
@${LINKER} $(filter %.o %.a, ${^}) \
${LD_FLAGS} \
-o ${@}
# Rule to create a .lst file.
${TOOLCHAIN}/%.lst:
@if [ 'x${VERBOSE}' = x ]; \
then \
echo " [ OBJDUMP ] ${@}"; \
else \
echo "${OBJDUMP} ${OBJDUMP_FLAGS} ${TOOLCHAIN}/${TARGET} > ${@}"; \
fi
@${OBJDUMP} ${OBJDUMP_FLAGS} ${TOOLCHAIN}/${TARGET} > ${@}
|
