Did some digging regarding AC_SEARCH_LIBS and AC_CHECK_LIB. Somebody with more autotools knowledge might want to read this one:
<http://www.flameeyes.eu/autotools-mythbuster/autoconf/finding.html> So, the question is: why AC_CHECK_LIB rather than AC_SEARCH_LIBS in this particular case? Apparently both have their uses. -- Samuli Seppänen Community Manager OpenVPN Technologies, Inc irc freenode net: mattock > Signed-off-by: Alon Bar-Lev <alon.bar...@gmail.com> > --- > configure.ac | 27 +++++++++++++++++---------- > src/openvpn/Makefile.am | 1 + > 2 files changed, 18 insertions(+), 10 deletions(-) > > diff --git a/configure.ac b/configure.ac > index a0dc462..c540f82 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -442,16 +442,6 @@ if test "${WIN32}" != "yes"; then > [[${SOCKET_INCLUDES}]] > ) > > - AC_CHECK_DECLS( > - [SO_MARK], > - , > - , > - [[${SOCKET_INCLUDES}]] > - ) > - > - AC_SEARCH_LIBS([socket], [socket]) > - AC_SEARCH_LIBS([inet_ntoa], [nsl]) > - AC_SEARCH_LIBS([gethostbyname], [resolv nsl]) > AC_FUNC_FORK > fi > > @@ -613,6 +603,23 @@ AC_CHECK_LIB( > ) > AC_SUBST([DL_LIBS]) > > +AC_CHECK_LIB( > + [nsl], > + [inet_ntoa], > + [SOCKETS_LIBS="${SOCKETS_LIBS} -lnsl"] > +) > +AC_CHECK_LIB( > + [socket], > + [socket], > + [SOCKETS_LIBS="${SOCKETS_LIBS} -lsocket"] > +) > +AC_CHECK_LIB( > + [resolv], > + [gethostbyname], > + [SOCKETS_LIBS="${SOCKETS_LIBS} -lresolv"] > +) > +AC_SUBST([SOCKETS_LIBS]) > + > case "${with_mem_check}" in > valgrind) > AC_CHECK_HEADER( > diff --git a/src/openvpn/Makefile.am b/src/openvpn/Makefile.am > index c7626c8..86abd09 100644 > --- a/src/openvpn/Makefile.am > +++ b/src/openvpn/Makefile.am > @@ -96,6 +96,7 @@ openvpn_SOURCES = \ > win32.h win32.c \ > cryptoapi.h cryptoapi.c > openvpn_LDADD = \ > + $(SOCKETS_LIBS) \ > $(OPTIONAL_DL_LIBS) > if WIN32 > openvpn_SOURCES += openvpn_win32_resources.rc
