Due to some specific needs (relaxing inter-package dependencies) I need to override link_all_deplibs to 'no' in my libtool script. However my attempts to use _LT_AC_TAGVAR failed. Of course I can hack the libtool script after I run configure, but... It would be nice if I could do it in the way intended by autotools authors. Here is a sample configure.ac I used to test the feature: AC_PREREQ(2.61) AC_INIT([TEST_PROJ],[3.6],[a.a.godin@xxxxxxxxx]) dnl end versions dnl project general settings AC_CONFIG_AUX_DIR([.]) AC_CONFIG_MACRO_DIR([m4]) AC_CANONICAL_TARGET AC_CANONICAL_HOST AC_CANONICAL_BUILD AC_PROG_CC_C99 AC_PROG_CXX AM_INIT_AUTOMAKE(TEST_PROJ, 3.6, foreign) AC_PROG_LIBTOOL _LT_AC_TAGVAR(link_all_deplibs,CXX)=no _LT_AC_TAGVAR(link_all_deplibs,)=no LT_INIT AC_CONFIG_FILES(Makefile) AC_OUTPUT Thanks in advance