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generated by cgit v1.2.2 (git 2.25.0) at 2025-05-06 04:06:55 -0400
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# figure out what kind of host we are running on
host-arch := $(shell uname -m | \
	sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e s/arm.*/arm/)

# ##############################################################################
# User variables

# user variables can be specified in the environment or in a .config file
-include .config

# ARCH -- what architecture are we compiling for?
ARCH ?= ${host-arch}

# LITMUS_KERNEL -- where to find the litmus kernel?
LITMUS_KERNEL ?= ../litmus2010


# ##############################################################################
# Internal configuration.

# compiler flags
flags-debug    = -Wall -Werror -g -Wdeclaration-after-statement
flags-api      = -D_XOPEN_SOURCE=600 -D_GNU_SOURCE

# architecture-specific flags
flags-i386     = -m32
flags-x86_64   = -m64
flags-sparc64  = -mcpu=v9 -m64
# default: none

# name of the directory that has the arch headers in the Linux source
include-i386     = x86
include-x86_64   = x86
include-sparc64  = sparc
# default: the arch name
include-${ARCH} ?= ${ARCH}

# name of the file(s) that holds the actual system call numbers
unistd-i386      = unistd.h unistd_32.h
unistd-x86_64    = unistd.h unistd_64.h
# default: unistd.h
unistd-${ARCH}  ?= unistd.h

# by default we use the local version
LIBLITMUS ?= .

# where to find header files
headers = -I${LIBLITMUS}/include -I${LIBLITMUS}/arch/${include-${ARCH}}/include

# combine options
CPPFLAGS = ${flags-api} ${flags-${ARCH}} -DARCH=${ARCH} ${headers}
CFLAGS   = ${flags-debug}
LDFLAGS  = ${flags-${ARCH}}

# how to link against liblitmus
liblitmus-flags = -L${LIBLITMUS} -llitmus

# Force gcc instead of cc, but let the user specify a more specific version if
# desired.
ifeq (${CC},cc)
CC = gcc
endif

# incorporate cross-compiler (if any)
CC  := ${CROSS_COMPILE}${CC}
LD  := ${CROSS_COMPILE}${LD}
AR  := ${CROSS_COMPILE}${AR}

# ##############################################################################
# Targets

all     = lib ${rt-apps}
rt-apps = cycles base_task rt_launch rtspin release_ts measure_syscall \
	  base_mt_task runtests

.PHONY: all lib clean dump-config TAGS tags

all: ${all} inc/config.makefile

# Write a distilled version of the flags for clients of the library. Ideally,
# this should depend on liblitmus.a, but that requires LIBLITMUS to be a
# private override. Private overrides are only supported starting with make
# 3.82, which is not yet in common use.
inc/config.makefile: LIBLITMUS = $${LIBLITMUS}
inc/config.makefile: Makefile
	@printf "%-15s= %-20s\n" \
		ARCH ${ARCH} \
		CFLAGS '${CFLAGS}' \
		LDFLAGS '${LDFLAGS}' \
		LDLIBS '${liblitmus-flags}' \
		CPPFLAGS '${CPPFLAGS}' \
		CC '${shell which ${CC}}' \
		LD '${shell which ${LD}}' \
		AR '${shell which ${AR}}' \
	> $@

dump-config:
	@echo Build configuration:
	@printf "%-15s= %-20s\n" \
		ARCH ${ARCH} \
		LITMUS_KERNEL "${LITMUS_KERNEL}" \
		CROSS_COMPILE "${CROSS_COMPILE}" \
		headers "${headers}" \
		"kernel headers" "${imported-headers}" \
		CFLAGS "${CFLAGS}" \
		LDFLAGS "${LDFLAGS}" \
		CPPFLAGS "${CPPFLAGS}" \
		CC "${CC}" \
		CPP "${CPP}" \
		LD "${LD}" \
		AR "${AR}" \
		obj-all "${obj-all}"

clean:
	rm -f ${rt-apps}
	rm -f *.o *.d *.a test_catalog.inc
	rm -f ${imported-headers}
	rm -f inc/config.makefile
	rm -f tags TAGS

# Emacs Tags
TAGS:
	@echo TAGS
	@find . -type f -and  -iname '*.[ch]' | xargs etags

# Vim Tags
tags:
	@echo tags
	@find . -type f -and  -iname '*.[ch]' | xargs ctags

# ##############################################################################
# Kernel headers.
# The kernel does not like being #included directly, so let's
# copy out the parts that we need.

# Litmus headers
include/litmus/%.h: ${LITMUS_KERNEL}/include/litmus/%.h
	@mkdir -p ${dir $@}
	cp $< $@

# asm headers
arch/${include-${ARCH}}/include/asm/%.h: \
	${LITMUS_KERNEL}/arch/${include-${ARCH}}/include/asm/%.h
	@mkdir -p ${dir $@}
	cp $< $@

litmus-headers = include/litmus/rt_param.h include/litmus/unistd_32.h \
	include/litmus/unistd_64.h

unistd-headers = \
  $(foreach file,${unistd-${ARCH}},arch/${include-${ARCH}}/include/asm/$(file))


imported-headers = ${litmus-headers} ${unistd-headers}

# Let's not copy these twice.
.SECONDARY: ${imported-headers}

# ##############################################################################
# liblitmus

lib: liblitmus.a

# all .c file in src/ are linked into liblitmus
vpath %.c src/
obj-lib = $(patsubst src/%.c,%.o,$(wildcard src/*.c))

liblitmus.a: ${obj-lib}
	${AR} rcs $@ $+

# ##############################################################################
# Tests suite.

# tests are found in tests/
vpath %.c tests/

src-runtests = $(wildcard tests/*.c)
obj-runtests = $(patsubst tests/%.c,%.o,${src-runtests})

# generate list of tests automatically
test_catalog.inc: $(filter-out tests/runner.c,${src-runtests})