diff options
Diffstat (limited to 'make/rules.in')
| -rw-r--r-- | make/rules.in | 91 |
1 files changed, 87 insertions, 4 deletions
diff --git a/make/rules.in b/make/rules.in index d848480..12c9d5f 100644 --- a/make/rules.in +++ b/make/rules.in @@ -13,7 +13,7 @@ # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR # PERFORMANCE OF THIS SOFTWARE. -# $Id: rules.in,v 1.64.130.2 2009-01-10 23:46:57 tbox Exp $ +# $Id: rules.in,v 1.68 2009-09-01 18:40:25 jinmei Exp $ ### ### Common Makefile rules for BIND 9. @@ -35,6 +35,8 @@ sysconfdir = @sysconfdir@ localstatedir = @localstatedir@ mandir = @mandir@ datarootdir = @datarootdir@ +export_libdir = @export_libdir@ +export_includedir = @export_includedir@ DESTDIR = @@ -122,7 +124,7 @@ ALL_CPPFLAGS = \ ALL_CFLAGS = ${EXT_CFLAGS} ${ALL_CPPFLAGS} ${CFLAGS} \ ${ALWAYS_WARNINGS} ${STD_CWARNINGS} ${CWARNINGS} -.c.@O@: +@BIND9_CO_RULE@ ${LIBTOOL_MODE_COMPILE} ${CC} ${ALL_CFLAGS} -c $< SHELL = @SHELL@ @@ -134,12 +136,83 @@ PURIFY = @PURIFY@ MKDEP = ${SHELL} ${top_builddir}/make/mkdep +### +### This is a template compound command to build an executable binary with +### an internal symbol table. +### This process is tricky. We first link all objects including a tentative +### empty symbol table, then get a tentative list of symbols from the resulting +### binary ($@tmp0). Next, we re-link all objects, but this time with the +### symbol table just created ($tmp@1). The set of symbols should be the same, +### but the corresponding addresses would be changed due to the difference on +### the size of symbol tables. So we create the symbol table and re-create the +### objects once again. Finally, we check the symbol table embedded in the +### final binaryis consistent with the binary itself; otherwise the process is +### terminated. +### +### To minimize the overhead of creating symbol tables, the autoconf switch +### --enable-symtable takes an argument so that the symbol table can be created +### on a per application basis: unless the argument is set to "all", the symbol +### table is created only when a shell (environment) variable "MAKE_SYMTABLE" is +### set to a non-null value in the rule to build the executable binary. +### +### Each Makefile.in that uses this macro is expected to define "LIBS" and +### "NOSYMLIBS"; the former includes libisc with an empty symbol table, and +### the latter includes libisc without the definition of a symbol table. +### The rule to make the executable binary will look like this +### binary@EXEEXT@: ${OBJS} +### #export MAKE_SYMTABLE="yes"; \ <- enable if symtable is always needed +### export BASEOBJS="${OBJS}"; \ +### ${FINALBUILDCMD} +### +### Normally, ${LIBS} includes all necessary libraries to build the binary; +### there are some exceptions however, where the rule lists some of the +### necessary libraries explicitly in addition to (or instead of) ${LIBS}, +### like this: +### binary@EXEEXT@: ${OBJS} +### cc -o $@ ${OBJS} ${OTHERLIB1} ${OTHERLIB2} ${lIBS} +### in order to modify such a rule to use this compound command, a separate +### variable "LIBS0" should be deinfed for the explicitly listed libraries, +### while making sure ${LIBS} still includes libisc. So the above rule would +### be modified as follows: +### binary@EXEEXT@: ${OBJS} +### export BASEOBJS="${OBJS}"; \ +### export LIBS0="${OTHERLIB1} ${OTHERLIB2}"; \ +### ${FINALBUILDCMD} +### See bin/check/Makefile.in for a complete example of the use of LIBS0. +### +FINALBUILDCMD = if [ X"${MKSYMTBL_PROGRAM}" = X -o X"$${MAKE_SYMTABLE:-${ALWAYS_MAKE_SYMTABLE}}" = X ] ; then \ + ${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} \ + -o $@ $${BASEOBJS} $${LIBS0} ${LIBS}; \ + else \ + rm -f $@tmp0; \ + ${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} \ + -o $@tmp0 $${BASEOBJS} $${LIBS0} ${LIBS} || exit 1; \ + rm -f $@-symtbl.c $@-symtbl.@O@; \ + ${MKSYMTBL_PROGRAM} ${top_srcdir}/util/mksymtbl.pl \ + -o $@-symtbl.c $@tmp0 || exit 1; \ + $(MAKE) $@-symtbl.@O@ || exit 1; \ + rm -f $@tmp1; \ + ${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} \ + -o $@tmp1 $${BASEOBJS} $@-symtbl.@O@ $${LIBS0} ${NOSYMLIBS} || exit 1; \ + rm -f $@-symtbl.c $@-symtbl.@O@; \ + ${MKSYMTBL_PROGRAM} ${top_srcdir}/util/mksymtbl.pl \ + -o $@-symtbl.c $@tmp1 || exit 1; \ + $(MAKE) $@-symtbl.@O@ || exit 1; \ + ${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} \ + -o $@tmp2 $${BASEOBJS} $@-symtbl.@O@ $${LIBS0} ${NOSYMLIBS}; \ + ${MKSYMTBL_PROGRAM} ${top_srcdir}/util/mksymtbl.pl \ + -o $@-symtbl2.c $@tmp2; \ + diff $@-symtbl.c $@-symtbl2.c || exit 1;\ + mv $@tmp2 $@; \ + rm -f $@tmp0 $@tmp1 $@tmp2 $@-symtbl2.c; \ + fi + cleandir: distclean superclean: maintainer-clean clean distclean maintainer-clean:: - rm -f *.@O@ *.o *.lo *.la core *.core .depend - rm -rf .libs + rm -f *.@O@ *.o *.lo *.la core *.core *-symtbl.c *tmp0 *tmp1 *tmp2 + rm -rf .depend .libs distclean maintainer-clean:: rm -f Makefile @@ -217,6 +290,16 @@ PDFLATEX = @PDFLATEX@ W3M = @W3M@ ### +### Script language program used to create internal symbol tables +### +MKSYMTBL_PROGRAM = @MKSYMTBL_PROGRAM@ + +### +### Switch to create internal symbol table selectively +### +ALWAYS_MAKE_SYMTABLE = @ALWAYS_MAKE_SYMTABLE@ + +### ### DocBook -> HTML ### DocBook -> man page ### |
