freebsd-skq/share/mk/sys.mk
jb e7efc3c9a8 Add support for the Compact C Type (CTF) conversions throughout FreeBSD's
system makefiles.

Note that the CTF conversion defaults to off. We may choose to change this
default later if DTrace proves popular and people are prepared to wear
the compilation performance impact of compiling with debug symbols all the
time.

Setting NO_CTF in the make args or user environment turns off CTF conversion.
Even if we choose to default CTF generation to on later, we still need
NO_CTF so that the buildworld process can bootstrap the tools without
needlessly generating CTF data for temporary tools.

Setting WITH_CTF in the make args or user environment (and _NOT_ in
/etc/make.conf) is the only way to enable CTF data conversion. Nore that
this can't be implemented the same way that the WITH_ and WITHOUT_ stuff
is implemented throughout the buildworld because the CTF conversion needs
to work when building a simple object without a Makefile, using the
default rules in sys.mk.

Typing 'make test.o' with no makefile and just a source file test.c
should work. Also, typing 'make WITH_CTF=1 test.o without a makefile and
just a source file test.c should work and produce an object with a CTF
elf section. Typing 'make WITH_CTF=1 CFLAGS=-g test.o' without a makefile
and just a source file test.c should produce an object with both a CTF
elf section and the debug elf sections.

In the FreeBSD build where more .mk files are used than just sys.mk
which is included my make by default, the use of DEBUG_FLAGS is the
correct way to enable a debug build. The important thing to note here
is that it is the DEBUG_FLAGS setting that prevents libraries and
programs from being stripped on installation. So, for the addition of
CTF data conversion, setting DEBUG_FLAGS to contain -g, without NO_CTF,
will cause the ctfconvert and ctfmerge build programs to be executed
also with the -g arg so that debug symbols are retained rather than
being removed after the CTF data elf section has been added.

Add DTrace libraries to the list of libnames.
2008-05-22 01:14:43 +00:00

358 lines
6.8 KiB
Makefile

# from: @(#)sys.mk 8.2 (Berkeley) 3/21/94
# $FreeBSD$
unix ?= We run FreeBSD, not UNIX.
.FreeBSD ?= true
# 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 ?=
.if defined(%POSIX)
CC ?= c89
CFLAGS ?= -O
.else
CC ?= cc
.if ${MACHINE_ARCH} == "arm" || ${MACHINE_ARCH} == "mips"
CFLAGS ?= -O -pipe
.else
CFLAGS ?= -O2 -pipe
.endif
.if defined(NO_STRICT_ALIASING)
CFLAGS += -fno-strict-aliasing
.endif
.endif
# Turn CTF conversion off by default for now. This default could be
# changed later if DTrace becomes popular.
.if !defined(WITH_CTF)
NO_CTF = 1
.endif
# C Type Format data is required for DTrace
CTFFLAGS ?= -L VERSION
.if !defined(NO_CTF)
CTFCONVERT ?= ctfconvert
CTFMERGE ?= ctfmerge
.if defined(CFLAGS) && (${CFLAGS:M-g} != "")
CTFFLAGS += -g
.else
CFLAGS += -g
.endif
.endif
CXX ?= c++
CXXFLAGS ?= ${CFLAGS:N-std=*:N-Wnested-externs:N-W*-prototypes:N-Wno-pointer-sign}
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
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}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.f:
${FC} ${FFLAGS} ${LDFLAGS} -o ${.TARGET} ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.sh:
cp ${.IMPSRC} ${.TARGET}
chmod a+x ${.TARGET}
# DOUBLE SUFFIX RULES
.c.o:
${CC} ${CFLAGS} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.f.o:
${FC} ${FFLAGS} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.y.o:
${YACC} ${YFLAGS} ${.IMPSRC}
${CC} ${CFLAGS} -c y.tab.c
rm -f y.tab.c
mv y.tab.o ${.TARGET}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.l.o:
${LEX} ${LFLAGS} ${.IMPSRC}
${CC} ${CFLAGS} -c lex.yy.c
rm -f lex.yy.c
mv lex.yy.o ${.TARGET}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.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 -p ${.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}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.c.o:
${CC} ${CFLAGS} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.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}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.p.o:
${PC} ${PFLAGS} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.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} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.asm.o:
${CC} -x assembler-with-cpp ${CFLAGS} -c ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.s.o:
${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
# XXX not -j safe
.y.o:
${YACC} ${YFLAGS} ${.IMPSRC}
${CC} ${CFLAGS} -c y.tab.c -o ${.TARGET}
rm -f y.tab.c
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.l.o:
${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
${CC} ${CFLAGS} -c ${.PREFIX}.tmp.c -o ${.TARGET}
rm -f ${.PREFIX}.tmp.c
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
# 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}
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.f.out .F.out .r.out .e.out:
${FC} ${EFLAGS} ${RFLAGS} ${FFLAGS} ${LDFLAGS} ${.IMPSRC} \
${LDLIBS} -o ${.TARGET}
rm -f ${.PREFIX}.o
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
# XXX not -j safe
.y.out:
${YACC} ${YFLAGS} ${.IMPSRC}
${CC} ${CFLAGS} ${LDFLAGS} y.tab.c ${LDLIBS} -ly -o ${.TARGET}
rm -f y.tab.c
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
.l.out:
${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
${CC} ${CFLAGS} ${LDFLAGS} ${.PREFIX}.tmp.c ${LDLIBS} -ll -o ${.TARGET}
rm -f ${.PREFIX}.tmp.c
.if defined(CTFCONVERT)
${CTFCONVERT} ${CTFFLAGS} ${.TARGET}
.endif
# FreeBSD build pollution. Hide it in the non-POSIX part of the ifdef.
__MAKE_CONF?=/etc/make.conf
.if exists(${__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
# Toggle on warnings
.WARN: dirsyntax
.endif
.include <bsd.compat.mk>
.include <bsd.cpu.mk>