Add some capabilities to <bsd.lib.mk> so that it can be used for
building dlopen-able modules, and add features needed to build a static PAM library. I think I cleaned it up some, too, but beauty is in the eye of the beholder. You can now build a shared library without version numbers, by defining SHLIB_NAME to something like "pam_unix.so". If SHLIB_MAJOR and/or SHLIB_MINOR are set, SHLIB_NAME gets the usual default value, but it can be overridden if desired. If none of these symbols are set, no shared library is built. SHLIB_LINK controls the name of the symbolic link that points to the library. If it is unset, no link is made. In the usual case, it gets the right default: e.g., "libc.so" for ELF, nothing for a.out. This can be overridden. STATICOBJS can be set to a list of extra object files that should be added to the static library but not to the shared library. These objects are added to the profiled library too. These changes should make it easy to use <bsd.lib.mk> for building things such as PAM modules and dynamic linkers, for which <bsd.prog.mk> has been abused until now.
This commit is contained in:
John Polstra
parent
c403312f22
commit
f67eb0dce4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=42915
@ -1,5 +1,5 @@
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# from: @(#)bsd.lib.mk 5.26 (Berkeley) 5/2/91
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# $Id: bsd.lib.mk,v 1.82 1998/12/06 17:14:37 bde Exp $
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# $Id: bsd.lib.mk,v 1.83 1999/01/09 21:50:58 jdp Exp $
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#
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.if !target(__initialized__)
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@ -16,8 +16,25 @@ SHLIB_MINOR != . ${.CURDIR}/shlib_version ; echo $$minor
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.endif
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.endif
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.if !defined(NOPIC) && ${OBJFORMAT} == elf
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SONAME?= lib${LIB}.so.${SHLIB_MAJOR}
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# Set up the variables controlling shared libraries. After this section,
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# SHLIB_NAME will be defined only if we are to create a shared library.
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# SHLIB_LINK will be defined only if we are to create a link to it.
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# INSTALL_PIC_ARCHIVE will be defined only if we are to create a PIC archive.
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.if defined(NOPIC)
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.undef SHLIB_NAME
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.undef INSTALL_PIC_ARCHIVE
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.else
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.if ${OBJFORMAT} == elf
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.if !defined(SHLIB_NAME) && defined(SHLIB_MAJOR)
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SHLIB_NAME= lib${LIB}.so.${SHLIB_MAJOR}
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SHLIB_LINK?= lib${LIB}.so
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.endif
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SONAME?= ${SHLIB_NAME}
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.else
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.if defined(SHLIB_MAJOR) && defined(SHLIB_MINOR)
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SHLIB_NAME?= lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}
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.endif
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.endif
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.endif
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.if defined(DESTDIR)
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@ -145,20 +162,12 @@ _LIBS=lib${LIB}.a
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.endif
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.endif
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.if !defined(NOPIC)
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.if ${OBJFORMAT} == aout
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.if defined(SHLIB_MAJOR) && defined(SHLIB_MINOR)
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_LIBS+=lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}
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.endif
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.else
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.if defined(SHLIB_MAJOR)
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_LIBS+=lib${LIB}.so.${SHLIB_MAJOR}
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.endif
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.if defined(SHLIB_NAME)
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_LIBS+=${SHLIB_NAME}
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.endif
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.if defined(INSTALL_PIC_ARCHIVE)
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_LIBS+=lib${LIB}_pic.a
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.endif
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.endif
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.if !defined(PICFLAG)
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PICFLAG=-fpic
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@ -168,13 +177,13 @@ all: objwarn ${_LIBS} all-man _SUBDIR # llib-l${LIB}.ln
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OBJS+= ${SRCS:N*.h:R:S/$/.o/g}
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lib${LIB}.a:: ${OBJS}
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lib${LIB}.a:: ${OBJS} ${STATICOBJS}
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@${ECHO} building standard ${LIB} library
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@rm -f lib${LIB}.a
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@${AR} cq lib${LIB}.a `lorder ${OBJS} | tsort -q` ${ARADD}
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@${AR} cq lib${LIB}.a `lorder ${OBJS} ${STATICOBJS} | tsort -q` ${ARADD}
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${RANLIB} lib${LIB}.a
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POBJS+= ${OBJS:.o=.po}
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POBJS+= ${OBJS:.o=.po} ${STATICOBJS:.o=.po}
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.if !defined(NOPROFILE)
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lib${LIB}_p.a:: ${POBJS}
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@${ECHO} building profiled ${LIB} library
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@ -189,24 +198,25 @@ LDDESTDIRENV?= LIBRARY_PATH=${DESTDIR}${SHLIBDIR}:${DESTDIR}${LIBDIR}
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SOBJS+= ${OBJS:.o=.So}
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.if !defined(NOPIC)
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.if defined(SHLIB_NAME)
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${SHLIB_NAME}: ${SOBJS}
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@${ECHO} building shared library ${SHLIB_NAME}
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@rm -f ${SHLIB_NAME} ${SHLIB_LINK}
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.if defined(SHLIB_LINK)
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@ln -sf ${SHLIB_NAME} ${SHLIB_LINK}
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.endif
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.if ${OBJFORMAT} == aout
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lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}: ${SOBJS}
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@${ECHO} building shared ${LIB} library \(version ${SHLIB_MAJOR}.${SHLIB_MINOR}\)
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@rm -f lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}
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@${LDDESTDIRENV} ${CC} -shared -Wl,-x -Wl,-assert -Wl,pure-text \
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-o lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR} \
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@${LDDESTDIRENV} ${CC} -shared -Wl,-x,-assert,pure-text \
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-o ${SHLIB_NAME} \
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`lorder ${SOBJS} | tsort -q` ${LDDESTDIR} ${LDADD}
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.else
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lib${LIB}.so.${SHLIB_MAJOR}: ${SOBJS}
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@${ECHO} building shared ${LIB} library \(version ${SHLIB_MAJOR}\)
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@rm -f lib${LIB}.so.${SHLIB_MAJOR} lib${LIB}.so
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@ln -sf lib${LIB}.so.${SHLIB_MAJOR} lib${LIB}.so
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@${LDDESTDIRENV} ${CC} -shared -Wl,-x \
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-o lib${LIB}.so.${SHLIB_MAJOR} -Wl,-soname,${SONAME} \
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-o ${SHLIB_NAME} -Wl,-soname,${SONAME} \
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`lorder ${SOBJS} | tsort -q` ${LDDESTDIR} ${LDADD}
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.endif
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.endif
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.if defined(INSTALL_PIC_ARCHIVE)
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lib${LIB}_pic.a:: ${SOBJS}
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@${ECHO} building special pic ${LIB} library
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@rm -f lib${LIB}_pic.a
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@ -219,10 +229,11 @@ llib-l${LIB}.ln: ${SRCS}
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.if !target(clean)
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clean: _SUBDIR
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rm -f a.out ${OBJS} ${OBJS:S/$/.tmp/} ${CLEANFILES}
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rm -f a.out ${OBJS} ${STATICOBJS} ${OBJS:S/$/.tmp/} ${CLEANFILES}
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rm -f lib${LIB}.a # llib-l${LIB}.ln
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rm -f ${POBJS} ${POBJS:S/$/.tmp/} lib${LIB}_p.a
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rm -f ${SOBJS} ${SOBJS:.So=.so} ${SOBJS:S/$/.tmp/} \
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${SHLIB_NAME} ${SHLIB_LINK} \
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lib${LIB}.so.* lib${LIB}.so lib${LIB}_pic.a
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.if defined(CLEANDIRS) && !empty(CLEANDIRS)
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rm -rf ${CLEANDIRS}
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@ -234,15 +245,14 @@ _EXTRADEPEND:
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sed -e 's/^\([^\.]*\).o[ ]*:/\1.o \1.po \1.So:/' < ${DEPENDFILE} \
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> $$TMP; \
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mv $$TMP ${DEPENDFILE}
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.if !defined(NOEXTRADEPEND) && !defined(NOPIC)
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.if !defined(NOEXTRADEPEND) && defined(SHLIB_NAME)
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.if ${OBJFORMAT} == aout
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echo lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}: \
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echo ${SHLIB_NAME}: \
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`${LDDESTDIRENV} ${CC} -shared -Wl,-f ${LDDESTDIR} ${LDADD}` \
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>> ${DEPENDFILE}
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.else
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.if defined(DPADD) && !empty(DPADD)
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echo lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR}: \
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${DPADD} >> ${DEPENDFILE}
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echo ${SHLIB_NAME}: ${DPADD} >> ${DEPENDFILE}
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.endif
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.endif
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.endif
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@ -265,29 +275,18 @@ realinstall: beforeinstall
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${INSTALLFLAGS} lib${LIB}_p.a ${DESTDIR}${LIBDIR}
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.endif
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.endif
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.if !defined(NOPIC)
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.if ${OBJFORMAT} == aout
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.if defined(SHLIB_MAJOR) && defined(SHLIB_MINOR)
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.if defined(SHLIB_NAME)
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${INSTALL} ${COPY} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${INSTALLFLAGS} ${SHLINSTALLFLAGS} \
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lib${LIB}.so.${SHLIB_MAJOR}.${SHLIB_MINOR} \
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${DESTDIR}${SHLIBDIR}
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.endif
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.else
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.if defined(SHLIB_MAJOR)
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${INSTALL} ${COPY} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${INSTALLFLAGS} ${SHLINSTALLFLAGS} \
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lib${LIB}.so.${SHLIB_MAJOR} \
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${DESTDIR}${SHLIBDIR}
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ln ${LN_FLAGS} -sf lib${LIB}.so.${SHLIB_MAJOR} \
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${DESTDIR}${SHLIBDIR}/lib${LIB}.so
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${SHLIB_NAME} ${DESTDIR}${SHLIBDIR}
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.if defined(SHLIB_LINK)
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ln ${LN_FLAGS} -sf ${SHLIB_NAME} ${DESTDIR}${SHLIBDIR}/${SHLIB_LINK}
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.endif
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.endif
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.if defined(INSTALL_PIC_ARCHIVE)
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${INSTALL} ${COPY} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${INSTALLFLAGS} lib${LIB}_pic.a ${DESTDIR}${LIBDIR}
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.endif
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.endif
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.if defined(LINKS) && !empty(LINKS)
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@set ${LINKS}; \
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while test $$# -ge 2; do \
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@ -335,7 +334,7 @@ all-man:
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.include <bsd.dep.mk>
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.if !exists(${DEPENDFILE})
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${OBJS} ${POBJS} ${SOBJS}: ${SRCS:M*.h}
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${OBJS} ${STATICOBJS} ${POBJS} ${SOBJS}: ${SRCS:M*.h}
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.endif
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.include <bsd.obj.mk>
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