sys.mk - This Makefile defines a set of rules for compiling…

/share/mk/sys.mk

https://bitbucket.org/freebsd/freebsd-head/ · Makefile · 348 lines · 233 code · 72 blank · 43 comment · 11 complexity · 0120a583d0e43c0ea8825f860a27c457 MD5 · raw file


#	from: @(#)sys.mk	8.2 (Berkeley) 3/21/94
# $FreeBSD$

unix		?=	We run FreeBSD, not UNIX.
.FreeBSD	?=	true

.if !defined(%POSIX)
#
# MACHINE_CPUARCH defines a collection of MACHINE_ARCH.  Machines with
# the same MACHINE_ARCH can run each other's binaries, so it necessarily
# has word size and endian swizzled in.  However, support files for
# these machines often are shared amongst all combinations of size
# and/or endian.  This is called MACHINE_CPU in NetBSD, but that's used
# for something different in FreeBSD.
#
MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb)?/arm/:C/powerpc64/powerpc/}
.endif

# Set any local definitions first. Place this early, but it needs
# MACHINE_CPUARCH to be defined.
.sinclude <local.sys.mk>

# If the special target .POSIX appears (without prerequisites or
# commands) before the first noncomment line in the makefile, make shall
# process the makefile as specified by the Posix 1003.2 specification.
# make(1) sets the special macro %POSIX in this case (to the actual
# value "1003.2", for what it's worth).
#
# The rules below use this macro to distinguish between Posix-compliant
# and default behaviour.

.if defined(%POSIX)
.SUFFIXES:	.o .c .y .l .a .sh .f
.else
.SUFFIXES:	.out .a .ln .o .c .cc .cpp .cxx .C .m .F .f .e .r .y .l .S .asm .s .cl .p .h .sh
.endif

AR		?=	ar
.if defined(%POSIX)
ARFLAGS		?=	-rv
.else
ARFLAGS		?=	rl
.endif
RANLIB		?=	ranlib

AS		?=	as
AFLAGS		?=
ACFLAGS		?=

.if defined(%POSIX)
CC		?=	c89
CFLAGS		?=	-O
.else
CC		?=	cc
.if ${MACHINE_CPUARCH} == "arm" || ${MACHINE_CPUARCH} == "mips"
CFLAGS		?=	-O -pipe
.else
CFLAGS		?=	-O2 -pipe
.endif
.if defined(NO_STRICT_ALIASING)
CFLAGS		+=	-fno-strict-aliasing
.endif
.endif
PO_CFLAGS	?=	${CFLAGS}

# C Type Format data is required for DTrace
CTFFLAGS	?=	-L VERSION

CTFCONVERT	?=	ctfconvert
CTFMERGE	?=	ctfmerge
DTRACE		?=	dtrace
.if defined(CFLAGS) && (${CFLAGS:M-g} != "")
CTFFLAGS	+=	-g
.else
# XXX: What to do here? Is removing the CFLAGS part completely ok here?
# For now comment it out to not compile with -g unconditionally.
#CFLAGS		+=	-g
.endif

CXX		?=	c++
CXXFLAGS	?=	${CFLAGS:N-std=*:N-Wnested-externs:N-W*-prototypes:N-Wno-pointer-sign:N-Wold-style-definition}
PO_CXXFLAGS	?=	${CXXFLAGS}

CPP		?=	cpp

.if empty(.MAKEFLAGS:M-s)
ECHO		?=	echo
ECHODIR		?=	echo
.else
ECHO		?=	true
.if ${.MAKEFLAGS:M-s} == "-s"
ECHODIR		?=	echo
.else
ECHODIR		?=	true
.endif
.endif

.if !empty(.MAKEFLAGS:M-n) && ${.MAKEFLAGS:M-n} == "-n"
_+_		?=
.else
_+_		?=	+
.endif

.if defined(%POSIX)
FC		?=	fort77
FFLAGS		?=	-O 1
.else
FC		?=	f77
FFLAGS		?=	-O
.endif
EFLAGS		?=

INSTALL		?=	install

LEX		?=	lex
LFLAGS		?=

LD		?=	ld
LDFLAGS		?=

LINT		?=	lint
LINTFLAGS	?=	-cghapbx
LINTKERNFLAGS	?=	${LINTFLAGS}
LINTOBJFLAGS	?=	-cghapbxu -i
LINTOBJKERNFLAGS?=	${LINTOBJFLAGS}
LINTLIBFLAGS	?=	-cghapbxu -C ${LIB}

MAKE		?=	make

.if !defined(%POSIX)
NM		?=	nm
.endif

OBJC		?=	cc
OBJCFLAGS	?=	${OBJCINCLUDES} ${CFLAGS} -Wno-import

PC		?=	pc
PFLAGS		?=

RC		?=	f77
RFLAGS		?=

SHELL		?=	sh

YACC		?=	yacc
.if defined(%POSIX)
YFLAGS		?=
.else
YFLAGS		?=	-d
.endif

.if defined(%POSIX)

# Posix 1003.2 mandated rules
#
# Quoted directly from the Posix 1003.2 draft, only the macros
# $@, $< and $* have been replaced by ${.TARGET}, ${.IMPSRC}, and
# ${.PREFIX}, resp.

# SINGLE SUFFIX RULES
.c:
	${CC} ${CFLAGS} ${LDFLAGS} -o ${.TARGET} ${.IMPSRC}
	${CTFCONVERT_CMD}

.f:
	${FC} ${FFLAGS} ${LDFLAGS} -o ${.TARGET} ${.IMPSRC}
	${CTFCONVERT_CMD}

.sh:
	cp -f ${.IMPSRC} ${.TARGET}
	chmod a+x ${.TARGET}

# DOUBLE SUFFIX RULES

.c.o:
	${CC} ${CFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.f.o:
	${FC} ${FFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.y.o:
	${YACC} ${YFLAGS} ${.IMPSRC}
	${CC} ${CFLAGS} -c y.tab.c
	rm -f y.tab.c
	mv y.tab.o ${.TARGET}
	${CTFCONVERT_CMD}

.l.o:
	${LEX} ${LFLAGS} ${.IMPSRC}
	${CC} ${CFLAGS} -c lex.yy.c
	rm -f lex.yy.c
	mv lex.yy.o ${.TARGET}
	${CTFCONVERT_CMD}

.y.c:
	${YACC} ${YFLAGS} ${.IMPSRC}
	mv y.tab.c ${.TARGET}

.l.c:
	${LEX} ${LFLAGS} ${.IMPSRC}
	mv lex.yy.c ${.TARGET}

.c.a:
	${CC} ${CFLAGS} -c ${.IMPSRC}
	${AR} ${ARFLAGS} ${.TARGET} ${.PREFIX}.o
	rm -f ${.PREFIX}.o

.f.a:
	${FC} ${FFLAGS} -c ${.IMPSRC}
	${AR} ${ARFLAGS} ${.TARGET} ${.PREFIX}.o
	rm -f ${.PREFIX}.o

.else

# non-Posix rule set

.sh:
	cp -fp ${.IMPSRC} ${.TARGET}
	chmod a+x ${.TARGET}

.c.ln:
	${LINT} ${LINTOBJFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC} || \
	    touch ${.TARGET}

.cc.ln .C.ln .cpp.ln .cxx.ln:
	${LINT} ${LINTOBJFLAGS} ${CXXFLAGS:M-[DIU]*} ${.IMPSRC} || \
	    touch ${.TARGET}

.c:
	${CC} ${CFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
	${CTFCONVERT_CMD}

.c.o:
	${CC} ${CFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.cc .cpp .cxx .C:
	${CXX} ${CXXFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}

.cc.o .cpp.o .cxx.o .C.o:
	${CXX} ${CXXFLAGS} -c ${.IMPSRC}

.m.o:
	${OBJC} ${OBJCFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.p.o:
	${PC} ${PFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.e .r .F .f:
	${FC} ${RFLAGS} ${EFLAGS} ${FFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} \
	    -o ${.TARGET}

.e.o .r.o .F.o .f.o:
	${FC} ${RFLAGS} ${EFLAGS} ${FFLAGS} -c ${.IMPSRC}

.S.o:
	${CC} ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.asm.o:
	${CC} -x assembler-with-cpp ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC}
	${CTFCONVERT_CMD}

.s.o:
	${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
	${CTFCONVERT_CMD}

# XXX not -j safe
.y.o:
	${YACC} ${YFLAGS} ${.IMPSRC}
	${CC} ${CFLAGS} -c y.tab.c -o ${.TARGET}
	rm -f y.tab.c
	${CTFCONVERT_CMD}

.l.o:
	${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
	${CC} ${CFLAGS} -c ${.PREFIX}.tmp.c -o ${.TARGET}
	rm -f ${.PREFIX}.tmp.c
	${CTFCONVERT_CMD}

# XXX not -j safe
.y.c:
	${YACC} ${YFLAGS} ${.IMPSRC}
	mv y.tab.c ${.TARGET}

.l.c:
	${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.TARGET}

.s.out .c.out .o.out:
	${CC} ${CFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
	${CTFCONVERT_CMD}

.f.out .F.out .r.out .e.out:
	${FC} ${EFLAGS} ${RFLAGS} ${FFLAGS} ${LDFLAGS} ${.IMPSRC} \
	    ${LDLIBS} -o ${.TARGET}
	rm -f ${.PREFIX}.o
	${CTFCONVERT_CMD}

# XXX not -j safe
.y.out:
	${YACC} ${YFLAGS} ${.IMPSRC}
	${CC} ${CFLAGS} ${LDFLAGS} y.tab.c ${LDLIBS} -ly -o ${.TARGET}
	rm -f y.tab.c
	${CTFCONVERT_CMD}

.l.out:
	${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
	${CC} ${CFLAGS} ${LDFLAGS} ${.PREFIX}.tmp.c ${LDLIBS} -ll -o ${.TARGET}
	rm -f ${.PREFIX}.tmp.c
	${CTFCONVERT_CMD}

# FreeBSD build pollution.  Hide it in the non-POSIX part of the ifdef.
__MAKE_CONF?=/etc/make.conf
.if exists(${__MAKE_CONF})
.include "${__MAKE_CONF}"
.endif

.if defined(__MAKE_SHELL) && !empty(__MAKE_SHELL)
SHELL=	${__MAKE_SHELL}
.SHELL: path=${__MAKE_SHELL}
.endif

# Default executable format
# XXX hint for bsd.port.mk
OBJFORMAT?=	elf

# Tell bmake to expand -V VAR by default
.MAKE.EXPAND_VARIABLES= yes

.if !defined(.PARSEDIR)
# We are not bmake, which is more aggressive about searching .PATH
# It is sometime necessary to curb its enthusiasm with .NOPATH
# The following allows us to quietly ignore .NOPATH when not using bmake.
.NOTMAIN: .NOPATH
.NOPATH:

# Toggle on warnings
.WARN: dirsyntax
.endif

.endif

.include <bsd.compat.mk>
.include <bsd.cpu.mk>

Summary ✨

This Makefile defines a set of rules for compiling and linking various types of source files into executable programs, including C, C++, assembler, and Fortran code. It also handles dependencies, object file formats, and warnings. The rules are organized to accommodate different platforms, including BSD systems. The Makefile is designed to be flexible and adaptable to various build environments.

Alerts (1)

Complexity hotspot; line 55 (total complexity: 3)
55