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freebsd-src/share/mk/bsd.lib.mk
Bryan Drewery b03ca5c3ec FAST_DEPEND: Fix building of wrong source files in some cases. 
Similar to the original reason for these dependency hints to be added,
in r124637, the missing-dependency file case can lead to building of the
wrong source.

A clear example of this is in gnu/lib/libstdc++ where the .PATH contains
both contrib/gcc and contrib/libstdc++/src.

  contrib/gcc has a debug.c.
  contrib/libstdc++/src has a debug.cc.

  When building for the objects of debug.o, debug.So, and debug.po, it is
  ambiguous for which src file to use due to the suffix transformation
  rules, even though the proper one is listed first in .PATH.

  This was normally avoided due to these dependency hints for the initial
  build, and then mkdep would add an explicit 'debug.o: debug.cc'
  dependency into the .depend file.  WITH_FAST_DEPEND does not generate
  the .depend file with these, but puts them into .depend.debug.o instead.

Rather than extending the exists() check to each object's .depend.*
file, just enable the hint when when using WITH_FAST_DEPEND.  It fixes
the problem and seems to be safe enough to use since it is mapping SRCS
back to OBJS, rather than letting make make assumptions from OBJS to
SRCS.

A similar check mapping objects to headers is present in some mk files
but was not extended here for FAST_DEPEND since it has not yet been
found to be a problem.

X-MFC-With:	r290433
MFC after:	3 weeks
Sponsored by:	EMC / Isilon Storage Division
2015-11-09 23:37:04 +00:00

441 lines
12 KiB
Makefile
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# from: @(#)bsd.lib.mk 5.26 (Berkeley) 5/2/91
# $FreeBSD$
#
.include <bsd.init.mk>
.if defined(LIB_CXX)
LIB= ${LIB_CXX}
_LD= ${CXX}
.else
_LD= ${CC}
.endif
LIB_PRIVATE= ${PRIVATELIB:Dprivate}
# Set up the variables controlling shared libraries. After this section,
# SHLIB_NAME will be defined only if we are to create a shared library.
# SHLIB_LINK will be defined only if we are to create a link to it.
# INSTALL_PIC_ARCHIVE will be defined only if we are to create a PIC archive.
.if defined(NO_PIC)
.undef SHLIB_NAME
.undef INSTALL_PIC_ARCHIVE
.else
.if !defined(SHLIB) && defined(LIB)
SHLIB= ${LIB}
.endif
.if !defined(SHLIB_NAME) && defined(SHLIB) && defined(SHLIB_MAJOR)
SHLIB_NAME= lib${LIB_PRIVATE}${SHLIB}.so.${SHLIB_MAJOR}
.endif
.if defined(SHLIB_NAME) && !empty(SHLIB_NAME:M*.so.*)
SHLIB_LINK?= ${SHLIB_NAME:R}
.endif
SONAME?= ${SHLIB_NAME}
.endif
.if defined(CRUNCH_CFLAGS)
CFLAGS+= ${CRUNCH_CFLAGS}
.endif
.if ${MK_ASSERT_DEBUG} == "no"
CFLAGS+= -DNDEBUG
NO_WERROR=
.endif
.if defined(DEBUG_FLAGS)
CFLAGS+= ${DEBUG_FLAGS}
.if ${MK_CTF} != "no" && ${DEBUG_FLAGS:M-g} != ""
CTFFLAGS+= -g
.endif
.else
STRIP?= -s
.endif
.if ${MK_DEBUG_FILES} != "no" && empty(DEBUG_FLAGS:M-g) && \
empty(DEBUG_FLAGS:M-gdwarf*)
SHARED_CFLAGS+= -g
SHARED_CXXFLAGS+= -g
CTFFLAGS+= -g
.endif
.include <bsd.libnames.mk>
# prefer .s to a .c, add .po, remove stuff not used in the BSD libraries
# .So used for PIC object files
.SUFFIXES:
.SUFFIXES: .out .o .po .So .S .asm .s .c .cc .cpp .cxx .C .f .y .l .ln
.if !defined(PICFLAG)
.if ${MACHINE_CPUARCH} == "sparc64"
PICFLAG=-fPIC
.else
PICFLAG=-fpic
.endif
.endif
PO_FLAG=-pg
.c.o:
${CC} ${STATIC_CFLAGS} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.c.po:
${CC} ${PO_FLAG} ${STATIC_CFLAGS} ${PO_CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.c.So:
${CC} ${PICFLAG} -DPIC ${SHARED_CFLAGS} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.cc.o .C.o .cpp.o .cxx.o:
${CXX} ${STATIC_CXXFLAGS} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
.cc.po .C.po .cpp.po .cxx.po:
${CXX} ${PO_FLAG} ${STATIC_CXXFLAGS} ${PO_CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
.cc.So .C.So .cpp.So .cxx.So:
${CXX} ${PICFLAG} -DPIC ${SHARED_CXXFLAGS} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
.f.po:
${FC} -pg ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
${CTFCONVERT_CMD}
.f.So:
${FC} ${PICFLAG} -DPIC ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
${CTFCONVERT_CMD}
.s.po .s.So:
${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
${CTFCONVERT_CMD}
.asm.po:
${CC:N${CCACHE_BIN}} -x assembler-with-cpp -DPROF ${PO_CFLAGS} \
${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.asm.So:
${CC:N${CCACHE_BIN}} -x assembler-with-cpp ${PICFLAG} -DPIC \
${CFLAGS} ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.S.po:
${CC:N${CCACHE_BIN}} -DPROF ${PO_CFLAGS} ${ACFLAGS} -c ${.IMPSRC} \
-o ${.TARGET}
${CTFCONVERT_CMD}
.S.So:
${CC:N${CCACHE_BIN}} ${PICFLAG} -DPIC ${CFLAGS} ${ACFLAGS} \
-c ${.IMPSRC} -o ${.TARGET}
${CTFCONVERT_CMD}
.if !defined(_SKIP_BUILD)
all: beforebuild .WAIT
beforebuild: objwarn
.endif
_LIBDIR:=${LIBDIR}
_SHLIBDIR:=${SHLIBDIR}
.if defined(SHLIB_NAME)
.if ${MK_DEBUG_FILES} != "no"
SHLIB_NAME_FULL=${SHLIB_NAME}.full
# Use ${DEBUGDIR} for base system debug files, else .debug subdirectory
.if ${_SHLIBDIR} == "/boot" ||\
${SHLIBDIR:C%/lib(/.*)?$%/lib%} == "/lib" ||\
${SHLIBDIR:C%/usr/(tests/)?lib(32|exec)?(/.*)?%/usr/lib%} == "/usr/lib"
DEBUGFILEDIR=${DEBUGDIR}${_SHLIBDIR}
.else
DEBUGFILEDIR=${_SHLIBDIR}/.debug
DEBUGMKDIR=
.endif
.else
SHLIB_NAME_FULL=${SHLIB_NAME}
.endif
.endif
.include <bsd.symver.mk>
# Allow libraries to specify their own version map or have it
# automatically generated (see bsd.symver.mk above).
.if ${MK_SYMVER} == "yes" && !empty(VERSION_MAP)
${SHLIB_NAME_FULL}: ${VERSION_MAP}
LDFLAGS+= -Wl,--version-script=${VERSION_MAP}
.endif
.if defined(LIB) && !empty(LIB) || defined(SHLIB_NAME)
OBJS+= ${SRCS:N*.h:R:S/$/.o/}
CLEANFILES+= ${OBJS} ${STATICOBJS}
.endif
.if defined(LIB) && !empty(LIB)
_LIBS= lib${LIB_PRIVATE}${LIB}.a
lib${LIB_PRIVATE}${LIB}.a: ${OBJS} ${STATICOBJS}
@${ECHO} building static ${LIB} library
@rm -f ${.TARGET}
${AR} ${ARFLAGS} ${.TARGET} `NM='${NM}' NMFLAGS='${NMFLAGS}' lorder ${OBJS} ${STATICOBJS} | tsort -q` ${ARADD}
${RANLIB} ${RANLIBFLAGS} ${.TARGET}
.endif
.if !defined(INTERNALLIB)
.if ${MK_PROFILE} != "no" && defined(LIB) && !empty(LIB)
_LIBS+= lib${LIB_PRIVATE}${LIB}_p.a
POBJS+= ${OBJS:.o=.po} ${STATICOBJS:.o=.po}
CLEANFILES+= ${POBJS}
lib${LIB_PRIVATE}${LIB}_p.a: ${POBJS}
@${ECHO} building profiled ${LIB} library
@rm -f ${.TARGET}
${AR} ${ARFLAGS} ${.TARGET} `NM='${NM}' NMFLAGS='${NMFLAGS}' lorder ${POBJS} | tsort -q` ${ARADD}
${RANLIB} ${RANLIBFLAGS} ${.TARGET}
.endif
.if defined(SHLIB_NAME) || \
defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
SOBJS+= ${OBJS:.o=.So}
CLEANFILES+= ${SOBJS}
.endif
.if defined(SHLIB_NAME)
_LIBS+= ${SHLIB_NAME}
SOLINKOPTS= -shared -Wl,-x
.if !defined(ALLOW_SHARED_TEXTREL)
.if defined(LD_FATAL_WARNINGS) && ${LD_FATAL_WARNINGS} == "no"
SOLINKOPTS+= -Wl,--no-fatal-warnings
.else
SOLINKOPTS+= -Wl,--fatal-warnings
.endif
SOLINKOPTS+= -Wl,--warn-shared-textrel
.endif
.if target(beforelinking)
beforelinking: ${SOBJS}
${SHLIB_NAME_FULL}: beforelinking
.endif
.if defined(SHLIB_LINK)
# ${_LDSCRIPTROOT} is needed when cross-building
# and when building 32 bits library shims.
#
# ${_LDSCRIPTROOT} is the directory prefix that will be used when generating
# ld(1) scripts. The crosstools' ld is configured to lookup libraries in an
# alternative directory which is called "sysroot", so during buildworld binaries
# won't be linked against the running system libraries but against the ones of
# the current source tree. ${_LDSCRIPTROOT} behavior is twisted because of
# the location where we store them:
# - 64 bits libs are located under sysroot, so ${_LDSCRIPTROOT} must be empty
# because ld(1) will manage to find them from sysroot;
# - 32 bits shims are not, so ${_LDSCRIPTROOT} is used to specify their full
# path, outside of sysroot.
# Note that ld(1) scripts are generated both during buildworld and
# installworld; in the later case ${_LDSCRIPTROOT} must be obviously empty
# because on the target system, libraries are meant to be looked up from /.
.if defined(SHLIB_LDSCRIPT) && !empty(SHLIB_LDSCRIPT) && exists(${.CURDIR}/${SHLIB_LDSCRIPT})
${SHLIB_LINK:R}.ld: ${.CURDIR}/${SHLIB_LDSCRIPT}
sed -e 's,@@SHLIB@@,${_LDSCRIPTROOT}${_SHLIBDIR}/${SHLIB_NAME},g' \
-e 's,@@LIBDIR@@,${_LDSCRIPTROOT}${_LIBDIR},g' \
-e 's,/[^ ]*/,,g' \
${.ALLSRC} > ${.TARGET}
${SHLIB_NAME_FULL}: ${SHLIB_LINK:R}.ld
CLEANFILES+= ${SHLIB_LINK:R}.ld
.endif
CLEANFILES+= ${SHLIB_LINK}
.endif
${SHLIB_NAME_FULL}: ${SOBJS}
@${ECHO} building shared library ${SHLIB_NAME}
@rm -f ${SHLIB_NAME} ${SHLIB_LINK}
.if defined(SHLIB_LINK) && !commands(${SHLIB_LINK:R}.ld)
@${INSTALL_SYMLINK} ${SHLIB_NAME} ${SHLIB_LINK}
.endif
${_LD:N${CCACHE_BIN}} ${LDFLAGS} ${SSP_CFLAGS} ${SOLINKOPTS} \
-o ${.TARGET} -Wl,-soname,${SONAME} \
`NM='${NM}' NMFLAGS='${NMFLAGS}' lorder ${SOBJS} | tsort -q` ${LDADD}
.if ${MK_CTF} != "no"
${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SOBJS}
.endif
.if ${MK_DEBUG_FILES} != "no"
CLEANFILES+= ${SHLIB_NAME_FULL} ${SHLIB_NAME}.debug
${SHLIB_NAME}: ${SHLIB_NAME_FULL} ${SHLIB_NAME}.debug
${OBJCOPY} --strip-debug --add-gnu-debuglink=${SHLIB_NAME}.debug \
${SHLIB_NAME_FULL} ${.TARGET}
${SHLIB_NAME}.debug: ${SHLIB_NAME_FULL}
${OBJCOPY} --only-keep-debug ${SHLIB_NAME_FULL} ${.TARGET}
.endif
.endif #defined(SHLIB_NAME)
.if defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB) && ${MK_TOOLCHAIN} != "no"
_LIBS+= lib${LIB_PRIVATE}${LIB}_pic.a
lib${LIB_PRIVATE}${LIB}_pic.a: ${SOBJS}
@${ECHO} building special pic ${LIB} library
@rm -f ${.TARGET}
${AR} ${ARFLAGS} ${.TARGET} ${SOBJS} ${ARADD}
${RANLIB} ${RANLIBFLAGS} ${.TARGET}
.endif
.if defined(WANT_LINT) && !defined(NO_LINT) && defined(LIB) && !empty(LIB)
LINTLIB= llib-l${LIB}.ln
_LIBS+= ${LINTLIB}
LINTOBJS+= ${SRCS:M*.c:.c=.ln}
CLEANFILES+= ${LINTOBJS}
${LINTLIB}: ${LINTOBJS}
@${ECHO} building lint library ${.TARGET}
@rm -f ${.TARGET}
${LINT} ${LINTLIBFLAGS} ${CFLAGS:M-[DIU]*} ${.ALLSRC}
.endif
.endif # !defined(INTERNALLIB)
.if defined(_SKIP_BUILD)
all:
.else
.if defined(_LIBS) && !empty(_LIBS)
all: ${_LIBS}
CLEANFILES+= ${_LIBS}
.endif
.if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
all: _manpages
.endif
.endif
_EXTRADEPEND:
.if ${MK_FAST_DEPEND} == "no"
@TMP=_depend$$$$; \
sed -e 's/^\([^\.]*\).o[ ]*:/\1.o \1.po \1.So:/' < ${DEPENDFILE} \
> $$TMP; \
mv $$TMP ${DEPENDFILE}
.endif
.if !defined(NO_EXTRADEPEND) && defined(SHLIB_NAME)
.if defined(DPADD) && !empty(DPADD)
echo ${SHLIB_NAME_FULL}: ${DPADD} >> ${DEPENDFILE}
.endif
.endif
.if !target(install)
.if defined(PRECIOUSLIB)
.if !defined(NO_FSCHG)
SHLINSTALLFLAGS+= -fschg
.endif
SHLINSTALLFLAGS+= -S
.endif
_INSTALLFLAGS:= ${INSTALLFLAGS}
.for ie in ${INSTALLFLAGS_EDIT}
_INSTALLFLAGS:= ${_INSTALLFLAGS${ie}}
.endfor
_SHLINSTALLFLAGS:= ${SHLINSTALLFLAGS}
.for ie in ${INSTALLFLAGS_EDIT}
_SHLINSTALLFLAGS:= ${_SHLINSTALLFLAGS${ie}}
.endfor
.if !defined(INTERNALLIB)
realinstall: _libinstall
.ORDER: beforeinstall _libinstall
_libinstall:
.if defined(LIB) && !empty(LIB) && ${MK_INSTALLLIB} != "no"
${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}.a ${DESTDIR}${_LIBDIR}/
.endif
.if ${MK_PROFILE} != "no" && defined(LIB) && !empty(LIB)
${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}_p.a ${DESTDIR}${_LIBDIR}/
.endif
.if defined(SHLIB_NAME)
${INSTALL} ${STRIP} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} ${_SHLINSTALLFLAGS} \
${SHLIB_NAME} ${DESTDIR}${_SHLIBDIR}/
.if ${MK_DEBUG_FILES} != "no"
.if defined(DEBUGMKDIR)
${INSTALL} -T debug -d ${DESTDIR}${DEBUGFILEDIR}/
.endif
${INSTALL} -T debug -o ${LIBOWN} -g ${LIBGRP} -m ${DEBUGMODE} \
${_INSTALLFLAGS} \
${SHLIB_NAME}.debug ${DESTDIR}${DEBUGFILEDIR}/
.endif
.if defined(SHLIB_LINK)
.if commands(${SHLIB_LINK:R}.ld)
${INSTALL} -S -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} ${SHLIB_LINK:R}.ld \
${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
.else
.if ${_SHLIBDIR} == ${_LIBDIR}
${INSTALL_SYMLINK} ${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
.else
${INSTALL_RSYMLINK} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
.if exists(${DESTDIR}${_LIBDIR}/${SHLIB_NAME})
-chflags noschg ${DESTDIR}${_LIBDIR}/${SHLIB_NAME}
rm -f ${DESTDIR}${_LIBDIR}/${SHLIB_NAME}
.endif
.endif
.endif # SHLIB_LDSCRIPT
.endif # SHLIB_LINK
.endif # SHIB_NAME
.if defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB) && ${MK_TOOLCHAIN} != "no"
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} lib${LIB}_pic.a ${DESTDIR}${_LIBDIR}/
.endif
.if defined(WANT_LINT) && !defined(NO_LINT) && defined(LIB) && !empty(LIB)
${INSTALL} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
${_INSTALLFLAGS} ${LINTLIB} ${DESTDIR}${LINTLIBDIR}/
.endif
.endif # !defined(INTERNALLIB)
.if !defined(LIBRARIES_ONLY)
.include <bsd.nls.mk>
.include <bsd.files.mk>
.include <bsd.incs.mk>
.include <bsd.confs.mk>
.endif
.include <bsd.links.mk>
.if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
realinstall: _maninstall
.ORDER: beforeinstall _maninstall
.endif
.endif
.if !target(lint)
lint: ${SRCS:M*.c}
${LINT} ${LINTFLAGS} ${CFLAGS:M-[DIU]*} ${.ALLSRC}
.endif
.if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
.include <bsd.man.mk>
.endif
.include <bsd.dep.mk>
.if ${MK_FAST_DEPEND} == "yes" || !exists(${.OBJDIR}/${DEPENDFILE})
.if defined(LIB) && !empty(LIB)
.if ${MK_FAST_DEPEND} == "no"
${OBJS} ${STATICOBJS} ${POBJS}: ${SRCS:M*.h}
.endif
.for _S in ${SRCS:N*.[hly]}
${_S:R}.po: ${_S}
.endfor
.endif
.if defined(SHLIB_NAME) || \
defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
${SOBJS}: ${SRCS:M*.h}
.for _S in ${SRCS:N*.[hly]}
${_S:R}.So: ${_S}
.endfor
.endif
.endif
.include <bsd.obj.mk>
.include <bsd.sys.mk>
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