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- Reduce unnecessary linking

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- Link to libpython only when needed, fixes #242

When pyunbound is enabled while pythonmodule is not (i.e., ./configure
--without-pythonmodule --with-pyunbound), only the Python library
_unbound.so uses Python functions, and main programs (unbound,
unbound-anchor, ...) and libunbound.so do not. This patch removes
unneeded linking.

- Link the Python library _unbound.so to Python only. _unbound.so does
  not directly use libraries used by libunbound. This patch removes
  unneeded linking mentioned in [1]

[1] https://github.com/NLnetLabs/unbound/pull/511#issuecomment-886072003
This commit is contained in:
Chih-Hsuan Yen 2021-07-23 13:23:05 +08:00
parent 8e538dcaa8
commit 98087a051e
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GPG key ID: F98EF2A7B0A098AE
2 changed files with 10 additions and 5 deletions
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3
Makefile.in
View file

@ -61,6 +61,7 @@ PYTHON_CPPFLAGS=-I. @PYTHON_CPPFLAGS@
CFLAGS=-DSRCDIR=$(srcdir) @CFLAGS@
LDFLAGS=@LDFLAGS@
LIBS=@LIBS@
PYTHON_LIBS=@PYTHON_LIBS@
LIBOBJS=@LIBOBJS@
# filter out ctime_r from compat obj.
LIBOBJ_WITHOUT_CTIME=@LIBOBJ_WITHOUT_CTIME@
@ -476,7 +477,7 @@ libunbound/python/libunbound_wrap.c: $(srcdir)/libunbound/python/libunbound.i un
# Pyunbound python unbound wrapper
_unbound.la: libunbound_wrap.lo libunbound.la
$(LIBTOOL) --tag=CC --mode=link $(CC) $(RUNTIME_PATH) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -module -avoid-version -no-undefined -shared -o $@ libunbound_wrap.lo -rpath $(PYTHON_SITE_PKG) -L. -L.libs libunbound.la $(LIBS)
$(LIBTOOL) --tag=CC --mode=link $(CC) $(RUNTIME_PATH) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -module -avoid-version -no-undefined -shared -o $@ libunbound_wrap.lo -rpath $(PYTHON_SITE_PKG) -L. -L.libs libunbound.la $(PYTHON_LIBS)
util/config_file.c: util/configparser.h
util/configlexer.c: $(srcdir)/util/configlexer.lex util/configparser.h

12
configure.ac
View file

@ -699,11 +699,15 @@ if test x_$ub_test_python != x_no; then
AC_SUBST(PY_MAJOR_VERSION)
# Have Python
AC_DEFINE(HAVE_PYTHON,1,[Define if you have Python libraries and header files.])
if test -n "$LIBS"; then
LIBS="$PYTHON_LDFLAGS $LIBS"
else
LIBS="$PYTHON_LDFLAGS"
if test x_$ub_with_pythonmod != x_no; then
if test -n "$LIBS"; then
LIBS="$PYTHON_LDFLAGS $LIBS"
else
LIBS="$PYTHON_LDFLAGS"
fi
fi
PYTHON_LIBS="$PYTHON_LDFLAGS"
AC_SUBST(PYTHON_LIBS)
if test -n "$CPPFLAGS"; then
CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
else