freebsd-dev/lib/Makefile
Dimitry Andric 54ff5d7323 Add a SUBDIR_PARALLEL option to bsd.subdir.mk, to allow make to process
all the SUBDIR entries in parallel, instead of serially.  Apply this
option to a selected number of Makefiles, which can greatly speed up the
build on multi-core machines, when using make -j.

This can be extended to more Makefiles later on, whenever they are
verified to work correctly with parallel building.

I tested this on a 24-core machine, with make -j48 buildworld (N = 6):

                before    stddev       after    stddev
                =======   ======       =======  ======
real time        1741.1     16.5         959.8     2.7
user time       12468.7     16.4       14393.0    16.8
sys  time        1825.0     54.8        2110.6    22.8

(user+sys)/real     8.2                   17.1

E.g. the build was approximately 45% faster in real time.  On machines
with less cores, or with lower -j settings, the speedup will not be as
impressive.  But at least you can now almost max out a machine with
buildworld!

Submitted by:	jilles
MFC after:	2 weeks
2014-03-26 22:30:38 +00:00

284 lines
4.9 KiB
Makefile

# @(#)Makefile 8.1 (Berkeley) 6/4/93
# $FreeBSD$
.include <bsd.own.mk>
# To satisfy shared library or ELF linkage when only the libraries being
# built are visible:
#
# csu must be built before all shared libaries for ELF.
# libc must be built before all other shared libraries.
# libbsm must be built before libauditd.
# libcom_err must be built before libpam.
# libcrypt must be built before libpam.
# libkvm must be built before libdevstat.
# libldns must be built before libunbound.
# msun must be built before libg++ and libstdc++.
# libmd must be built before libatm, libopie, libradius, and libtacplus.
# ncurses must be built before libdialog, libedit and libreadline.
# libnetgraph must be built before libbsnmp/modules/snmp_netgraph.
# libopie must be built before libpam.
# libradius must be built before libpam.
# librpcsvc must be built before libpam.
# libsbuf must be built before libcam.
# libtacplus must be built before libpam.
# libutil must be built before libpam.
# libypclnt must be built before libpam.
# libgssapi must be built before librpcsec_gss
#
# Otherwise, the SUBDIR list should be in alphabetical order.
#
# Except it appears bind needs to be compiled last
SUBDIR_ORDERED= ${_csu} \
libc \
libc_nonshared \
libbsm \
libauditd \
libutil \
libpjdlog \
libnv \
${_libcapsicum} \
libcompiler_rt \
libcrypt \
libelf \
${_libiconv_modules} \
libkvm \
${_libldns} \
msun \
libmd \
ncurses \
${_libnetgraph} \
libradius \
librpcsvc \
libsbuf \
libtacplus \
${_libypclnt} \
${_libcxxrt} \
${_libcplusplus}
.if ${MK_KERBEROS_SUPPORT} != "no"
SUBDIR_ORDERED+= libcom_err
.endif
SUBDIR= ${SUBDIR_ORDERED} \
libalias \
libarchive \
${_libatm} \
libbegemot \
libblocksruntime \
${_libbluetooth} \
${_libbsnmp} \
libbsdstat \
libbz2 \
libcalendar \
libcam \
${_libcasper} \
libcompat \
libdevinfo \
libdevstat \
libdwarf \
libedit \
${_libefi} \
libexecinfo \
libexpat \
libfetch \
libgeom \
${_libgpib} \
${_libgssapi} \
${_librpcsec_gss} \
libipsec \
libjail \
libkiconv \
liblzma \
libmagic \
libmandoc \
libmemstat \
${_libmilter} \
${_libmp} \
${_libnandfs} \
libnetbsd \
${_libngatm} \
libnv \
libopie \
libpam \
libpcap \
${_libpmc} \
${_libproc} \
libprocstat \
librt \
${_librtld_db} \
${_libsdp} \
${_libsm} \
${_libsmb} \
${_libsmdb} \
${_libsmutil} \
libstand \
libstdbuf \
libstdthreads \
${_libtelnet} \
${_libthr} \
libthread_db \
libucl \
libufs \
libugidfw \
libulog \
${_libunbound} \
${_libusbhid} \
${_libusb} \
${_libvgl} \
${_libvmmapi} \
libwrap \
liby \
libz \
${_atf} \
${_clang} \
${_tests}
.if exists(${.CURDIR}/csu/${MACHINE_ARCH}-elf)
_csu=csu/${MACHINE_ARCH}-elf
.elif exists(${.CURDIR}/csu/${MACHINE_ARCH})
_csu=csu/${MACHINE_ARCH}
.elif exists(${.CURDIR}/csu/${MACHINE_CPUARCH}/Makefile)
_csu=csu/${MACHINE_CPUARCH}
.else
_csu=csu
.endif
# NB: keep these sorted by MK_* knobs
.if ${MK_ATM} != "no"
_libngatm= libngatm
.endif
.if ${MK_BLUETOOTH} != "no"
_libbluetooth= libbluetooth
_libsdp= libsdp
.endif
.if ${MK_BSNMP} != "no"
_libbsnmp= libbsnmp
.endif
.if ${MK_CASPER} != "no"
_libcapsicum= libcapsicum
_libcasper= libcasper
.endif
.if ${MK_CLANG} != "no" && !defined(COMPAT_32BIT)
_clang= clang
.endif
.if ${MK_GPIB} != "no"
_libgpib= libgpib
.endif
.if ${MK_GSSAPI} != "no"
_libgssapi= libgssapi
_librpcsec_gss= librpcsec_gss
.endif
.if ${MK_ICONV} != "no"
_libiconv_modules= libiconv_modules
.endif
.if ${MK_LDNS} != "no"
_libldns= libldns
.endif
.if ${MK_LIBCPLUSPLUS} != "no"
_libcxxrt= libcxxrt
_libcplusplus= libc++
.endif
.if ${MK_LIBTHR} != "no"
_libthr= libthr
.endif
.if ${MK_NAND} != "no"
_libnandfs= libnandfs
.endif
.if ${MK_NETGRAPH} != "no"
_libnetgraph= libnetgraph
.endif
.if ${MK_NIS} != "no"
_libypclnt= libypclnt
.endif
.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
_libsmb= libsmb
_libvgl= libvgl
_libproc= libproc
_librtld_db= librtld_db
.endif
.if ${MACHINE_CPUARCH} == "amd64"
_libvmmapi= libvmmapi
.endif
.if ${MACHINE_CPUARCH} == "ia64"
_libefi= libefi
_libsmb= libsmb
.endif
.if ${MACHINE_CPUARCH} == "mips"
_libproc= libproc
_librtld_db= librtld_db
.endif
.if ${MACHINE_CPUARCH} == "powerpc"
_libproc= libproc
_librtld_db= librtld_db
_libsmb= libsmb
.endif
.if ${MACHINE_CPUARCH} == "sparc64"
_libsmb= libsmb
.endif
.if ${MK_OPENSSL} != "no"
_libmp= libmp
.endif
.if ${MK_PMC} != "no"
_libpmc= libpmc
.endif
.if ${MK_SENDMAIL} != "no"
_libmilter= libmilter
_libsm= libsm
_libsmdb= libsmdb
_libsmutil= libsmutil
.endif
.if ${MK_TELNET} != "no"
_libtelnet= libtelnet
.endif
.if ${MK_TESTS} != "no"
_atf= atf
_tests= tests
.endif
.if ${MK_UNBOUND} != "no"
_libunbound= libunbound
.endif
.if ${MK_USB} != "no"
_libusbhid= libusbhid
_libusb= libusb
.endif
.if !defined(LIBRARIES_ONLY)
afterinstall:
${INSTALL_SYMLINK} ../include ${DESTDIR}/usr/lib/include
.endif
.if !make(install)
SUBDIR_PARALLEL=
.endif
.include <bsd.subdir.mk>