Makefile

# Copyright (c) 2020 Marek Benc <dusxmt@gmx.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

# This Makefile is written in a way to be POSIX compliant.  It optionally
# supports gcc-generated dependency information, which can be generated
# by invoking "make CC=gcc depend-update" and enabled by uncommenting
# the `include Makefile.deps' line near the end of the file.
#

# Operate in POSIX mode:
#
.POSIX:

# Support .o (object files), .c (C code files), and .dep (dependency files):
#
.SUFFIXES:
.SUFFIXES:	.o .c .dep

# Global settings:
#
CC		= cc
CPPFLAGS	=
CFLAGS		= -std=c89 -pedantic -Wall -Wextra -W
LDFLAGS		=
LIBS		=

# Argument library demo:
#
ARGS_DEMO	= dooshki_args_demo
ARGS_DEMO_LIBS	=

ARGS_DEMO_SRCS	= dooshki_args.c dooshki_args_demo.c
ARGS_DEMO_OBJS	= $(ARGS_DEMO_SRCS:.c=.o)

$(ARGS_DEMO): $(ARGS_DEMO_OBJS)
	$(CC) $(LDFLAGS) -o $@ $(ARGS_DEMO_OBJS) $(ARGS_DEMO_LIBS) $(LIBS)


# Build folder clean-up rule:
#
clean:
	rm -f $(ARGS_DEMO_OBJS) $(ARGS_DEMO)


# C file compilation rule:
#
.c.o:
	$(CC) $(CPPFLAGS) $(CFLAGS) -c $<


# Header dependency information generated by gcc:
#
#
# Uncomment the following line to enable the use of gcc-generated dependency
# information, which is useful mainly when working on the code, as it ensures
# that whenever the header files are modified, any code files that use them
# are automatically re-compiled upon "make" being invoked, and that those code
# files that aren't affected aren't needlessly re-compiled.
#
# This dependency information has to be manually updated whenever #include<>
# statements are changed in the code by invoking "make CC=gcc depend-update",
# to make sure the dependency information used by make is up-to-date.
#
# This file is intentionally not deleted by "make clean", as it's indended
# to fulfill the role of the hand-written dependency information traditionally
# present in Makefiles, providing a less error-prone alternative.
#
#include Makefile.deps


# Intermediate dependency files:
#
DEPFILES	= $(ARGS_DEMO_SRCS:.c=.dep)

# Generation rule for the intermediate dependency files from C code files:
#
.c.dep:
	$(CC) $(CPPFLAGS) $(CFLAGS) -MM $< -MF $@

# Dependency file update rule:
#
depend-update: $(DEPFILES)
	cat $(DEPFILES) > Makefile.deps
	rm -f $(DEPFILES)