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Makefile
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#############################################
## Makefile for shmfile
#
#
# TARGETS:
#
# all (default) - Builds libshmfile.so, and the example programs: owner and guest
#
# debug - Build libshmfile.so with debug flags
#
# static - Build libshmfile.so as a static lib
#
# install - Installs libshmfile.so into $DESTDIR/$PREFIX/lib . So default is /usr/lib,
# to install to /usr/local instead, do: make install PREFIX="/usr/local"
#
# To install to a package, do: make install DESTDIR="${pkgdir}"
#
# Also installs include headers and man pages
#
# install_static - Installs libshmfile.a into $DESTDIR/$PREFIX/lib
#
# clean - Remove all compiled stuff
#
# distclean - Return to a completely fresh state
#
# INFLUENIAL VARIABLES:
#
# CFLAGS - Defines the CFLAGS to be used for compiling
#
# LDFLAGS - Appended to CFLAGS for compiling.
#
# DESTDIR - For installing, this should either be blank, or an alternate root (like $RPM_BUILD_ROOT or $pkgdir)
#
# PREFIX - The prefix, default "/usr". Maybe you want "/usr/local", or "$HOME" for a local install.
#
#############################################
.PHONY: all install clean distclean debug static
# _LIB_PATH - Used as a hack so owner/guest programs work without doing an install
_LIB_PATH = $(shell pwd)
##############
## Variables
###########
CFLAGS ?= -O2 -s
LDFLAGS ?= -Wl,-O1,--sort-common
DEBUG_CFLAGS = -Og -ggdb3
USE_CFLAGS = ${CFLAGS} -Wall -std=gnu99 ${LDFLAGS}
USE_CFLAGS_EXEC = ${USE_CFLAGS} -L "${_LIB_PATH}" -Wl,-rpath="${_LIB_PATH}" -lshmfile
USE_CFLAGS_LIB = ${USE_CFLAGS} -fPIC -lrt -shared
DESTDIR ?=
PREFIX ?= /usr
EXAMPLES_ADDITIONAL_FLAGS = -I "${_LIB_PATH}" -Wl,-rpath="${_LIB_PATH}"
INSTALLPREFIX = $(shell echo "${DESTDIR}/${PREFIX}" | sed 's|//|/|g')
SHARED_LIB_FILES = libshmfile.so
STATIC_LIB_FILES = libshmfile.a
MAN3_FILES = man/fshm_open.3.gz
# ALL_FILES - The "all" standard build (shared lib and man page)
# static is handled separate
ALL_FILES = ${SHARED_LIB_FILES} ${MAN3_FILES}
EXAMPLE_FILES = examples/owner examples/guest
##############
## Targets
##########
all: ${ALL_FILES}
debug: ${ALL_FILES}
make clean; make CFLAGS="${DEBUG_CFLAGS}" LDFLAGS=""
static: ${STATIC_LIB_FILES}
clean:
rm -f ${SHARED_LIB_FILES} ${STATIC_LIB_FILES} ${MAN3_FILES} examples/owner examples/guest shmfile.o
distclean: clean
install: ${ALL_FILES}
# Install shared lib
mkdir -p "${INSTALLPREFIX}/lib"
install -m 775 libshmfile.so "${INSTALLPREFIX}/lib"
# Install include headers
mkdir -p "${INSTALLPREFIX}/include"
install -m 664 shmfile.h "${INSTALLPREFIX}/include"
# Install man pages
mkdir -p "${INSTALLPREFIX}/share/man/man3"
install -m 644 man/fshm_open.3.gz "${INSTALLPREFIX}/share/man/man3"
# Symlink alternate names for fshm_open.3.gz man page
ln -sf fshm_open.3.gz fshm_create.3.gz
ln -sf fshm_open.3.gz fshm_guest_open.3.gz
ln -sf fshm_open.3.gz fshm_force_destroy.3.gz
mv fshm_create.3.gz fshm_guest_open.3.gz fshm_force_destroy.3.gz "${INSTALLPREFIX}/share/man/man3"
install_static: ${STATIC_LIB_FILES}
mkdir -p "${INSTALLPREFIX}/lib"
install -m 644 libshmfile.a "${INSTALLPREFIX}/lib"
examples: ${SHARED_LIB_FILES} ${EXAMPLE_FILES}
examples_debug: ${SHARED_LIB_FILES} ${EXAMPLE_FILES}
make clean; make CFLAGS="${DEBUG_CFLAGS}" LDFLAGS="" examples
libshmfile.a: shmfile.o
ar rcs libshmfile.a shmfile.o
libshmfile.so: shmfile.o
gcc shmfile.o ${USE_CFLAGS_LIB} -shared -o libshmfile.so
shmfile.o: shmfile.c shmfile.h
gcc shmfile.c ${USE_CFLAGS_LIB} -c -o shmfile.o
examples/owner: examples/owner.c examples/owner_guest_private.h shmfile.h
gcc examples/owner.c ${USE_CFLAGS_EXEC} ${EXAMPLES_ADDITIONAL_FLAGS} -o examples/owner
examples/guest: examples/guest.c examples/owner_guest_private.h shmfile.h
gcc examples/guest.c ${USE_CFLAGS_EXEC} ${EXAMPLES_ADDITIONAL_FLAGS} -o examples/guest
man/fshm_open.3.gz: man/fshm_open.3
cat man/fshm_open.3 | gzip -c > man/fshm_open.3.gz
# vim: set ts=4 sw=4 st=4 noexpandtab: