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Revision 1.144, Wed Mar 9 23:10:06 2011 UTC (13 years ago) by joerg
Branch: MAIN
Changes since 1.143: +2 -1 lines

Add TLS support infrastructure. For dynamic binaries, ld.elf_so exports
_rtld_tls_allocate and _rtld_tls_free. libpthread uses this functions to
setup the thread private area of all new threads. ld.elf_so is
responsible for setting up the private area for the initial thread.
Similar functions are called from _libc_init for static binaries, using
dl_iterate_phdr to access the ELF Program Header.

Add test cases to exercise the different TLS storage models. Test cases
are compiled and installed on all platforms, but are skipped on
platforms not marked for TLS support.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

It is inspired by the TLS support in FreeBSD by Doug Rabson and the
clean ups of the DragonFly port of the original FreeBSD modifications.

#	$NetBSD: Makefile,v 1.144 2011/03/09 23:10:06 joerg Exp $
#	@(#)Makefile	8.2 (Berkeley) 2/3/94
#
# All library objects contain sccsid strings by default; they may be
# excluded as a space-saving measure.  To produce a library that does
# not contain these strings, delete -DLIBC_SCCS and -DSYSLIBC_SCCS
# from CPPFLAGS below.  To remove these strings from just the system call
# stubs, remove just -DSYSLIBC_SCCS from CPPFLAGS.
#
# The NLS (message catalog) functions are always in libc.  To choose that
# strerror(), perror(), strsignal(), psignal(), etc. actually call the NLS
# functions, put -DNLS on the CPPFLAGS line below.
#
# The YP functions are always in libc. To choose that getpwent() and friends
# actually call the YP functions, put -DYP on the CPPFLAGS line below.
#
# The Hesiod functions are always in libc. To choose that getpwent() and friends
# actually call the Hesiod functions, put -DHESIOD on the CPPFLAGS line below.

.include "Makefile.inc"

LIB=		c
CPPFLAGS+=	-I${.CURDIR}/include -I${.CURDIR}

LIBCDIR=	${.CURDIR}

.if exists (${ARCHDIR}/Makefile.inc)
.PATH:	${ARCHDIR}
.include "${ARCHDIR}/Makefile.inc"
.endif

.if exists (${ARCHDIR}/genassym.cf)
DPSRCS+=	assym.h
CLEANFILES+=	assym.h assym.h.tmp

assym.h: ${ARCHDIR}/genassym.cf
	${_MKTARGET_CREATE}
	${TOOL_GENASSYM} -- ${CC} ${CFLAGS} \
		${CPPFLAGS} ${CPPFLAGS.assym.h} ${PROF} \
		< ${ARCHDIR}/genassym.cf > assym.h.tmp && \
	mv -f assym.h.tmp assym.h
.endif

# The following controls how to build compatibility code for old NetBSD
# binaries. If BUILDCOLD is yes, then we build a separate library; otherwise
# we include the code in libc.
BUILDCOLD?= no
.if "${BUILDCOLD}" == "yes"
SUBDIR=compat
.include <bsd.subdir.mk>
.else
COMPATDIR=${.CURDIR}/compat
.include "${.CURDIR}/compat/Makefile.inc"
.endif

.include "${.CURDIR}/../../common/lib/libc/Makefile.inc"
.include "${.CURDIR}/atomic/Makefile.inc"
.include "${.CURDIR}/cdb/Makefile.inc"
.include "${.CURDIR}/db/Makefile.inc"
.if (${CITRUS} == "yes")
.include "${.CURDIR}/citrus/Makefile.inc"
.endif
.include "${.CURDIR}/compat-43/Makefile.inc"
.include "${.CURDIR}/dlfcn/Makefile.inc"
.include "${.CURDIR}/gdtoa/Makefile.inc"
.include "${.CURDIR}/gen/Makefile.inc"
.include "${.CURDIR}/gmon/Makefile.inc"
.include "${.CURDIR}/hash/Makefile.inc"
.include "${.CURDIR}/iconv/Makefile.inc"
.include "${.CURDIR}/inet/Makefile.inc"
.include "${.CURDIR}/isc/Makefile.inc"
.include "${.CURDIR}/locale/Makefile.inc"
.include "${.CURDIR}/md/Makefile.inc"
.include "${.CURDIR}/misc/Makefile.inc"
.include "${.CURDIR}/net/Makefile.inc"
.include "${.CURDIR}/nameser/Makefile.inc"
.include "${.CURDIR}/nls/Makefile.inc"
.if (${MACHINE_ARCH} != "alpha") && (${MACHINE_ARCH} != "sparc64")
.include "${.CURDIR}/quad/Makefile.inc"
.endif
.if (${USE_LIBTRE} == "yes")
.include "${NETBSDSRCDIR}/external/bsd/tre/Makefile.inc"
.else
.include "${.CURDIR}/regex/Makefile.inc"
.endif
.include "${.CURDIR}/resolv/Makefile.inc"
.include "${.CURDIR}/rpc/Makefile.inc"
.include "${.CURDIR}/ssp/Makefile.inc"
.include "${.CURDIR}/stdio/Makefile.inc"
.include "${.CURDIR}/stdlib/Makefile.inc"
.include "${.CURDIR}/string/Makefile.inc"
.include "${.CURDIR}/termios/Makefile.inc"
.include "${.CURDIR}/thread-stub/Makefile.inc"
.include "${.CURDIR}/time/Makefile.inc"
.include "${.CURDIR}/tls/Makefile.inc"
.include "${.CURDIR}/sys/Makefile.inc"
.include "${.CURDIR}/uuid/Makefile.inc"
.if (${MKYP} != "no")
.include "${.CURDIR}/yp/Makefile.inc"
.endif

# Remove from SRCS the .c files for any .S files added by the MD makefiles,
# also remove from SRCS the .c files for the .S and .c files in NO_SRCS.
# Add the .c file for .S files (in both variables) to LSRCS so that the
# 'normal' .c file for assembly files is used for the lint librray.
#
# Usage:
# Add .S files to NO_SRSC when another .S file provides the entry points.
# Add .c files to NO_SRSC when another .c file provides the entry points.
# (lint is run on all .c files in SRCS)

.for check_file in ${SRCS:M*.S} ${NO_SRCS}
unwanted_file := ${SRCS:M${check_file:.S=.c}}
.if "${unwanted_file}" != ""
SRCS := ${SRCS:N${unwanted_file}}
.if "${unwanted_file}" != "${check_file}"
LSRCS := ${LSRCS} ${unwanted_file}
.endif
.endif
.endfor

NLS=	C.msg Pig.msg ca.msg cs.msg de.msg es.msg fi.msg fr.msg nl.msg \
	no.msg pl.msg sk.msg sv.msg

realall: tags
tags: ${.OBJDIR}/tags
${.OBJDIR}/tags: ${SRCS}
	${_MKTARGET_CREATE}
	-${TOOL_CTAGS} -w ${.ALLSRC:M*.c}
	-egrep "^ENTRY(.*)|^FUNC(.*)|^SYSCALL(.*)" /dev/null ${.ALLSRC:M*.S} | \
	    sed "s;\([^:]*\):\([^(]*\)(\([^, )]*\)\(.*\);\3 \1 /^\2(\3\4$$/;" \
	    >> ${.TARGET}; sort -o ${.TARGET} ${.TARGET}

FILES=		${.OBJDIR}/tags
FILESNAME=	libc.tags
FILESDIR=	/var/db


# workaround for I18N stuffs: build singlebyte setlocale() for libc.a,
# multibyte for libc.so.  the quirk should be removed when we support
# dlopen() from within statically linked binaries.
.if (${CITRUS} == "yes")
CSHLIBFLAGS+=	-D_I18N_DYNAMIC
.endif

.include <bsd.lib.mk>

# force the dynamic linker to initialize libc first
SHLIB_SHFLAGS+=	-Wl,-z,initfirst