On Saturday 2018-04-28 00:29, Yuri Gribov wrote: >--- a/Make_global.am >+++ b/Make_global.am >@@ -5,4 +5,4 @@ > LIBVERSION=2:0:2 > > AM_CPPFLAGS = -I$(top_srcdir)/include >-AM_CFLAGS = -Wall >+AM_CFLAGS = -Wall @VISFLAGS@ Only use @@ in .am files when you must (like, left-hand sides). Otherwise, just ${VISFLAGS}. >+dnl Visibility annotations... >+OLDCFLAGS="$CFLAGS" >+CFLAGS="$CFLAGS -fvisibility=hidden" >+VISFLAGS= >+AC_SUBST(VISFLAGS) >+AC_MSG_CHECKING(whether compiler supports visibility annotations) >+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[void __attribute__((visibility("default"))) foo() {}]])], >+ [AC_MSG_RESULT(yes); VISFLAGS='-DNFNL_ENABLE_VISIBILITY'], >+ AC_MSG_RESULT(no)) >+CFLAGS="$OLDCFLAGS" >+ >+dnl Version scripts... >+OLDLDFLAGS="$LDFLAGS" >+LDFLAGS="$LDFLAGS -Wl,--version-script=$srcdir/nfnl.version" >+LDSFLAGS= >+AC_SUBST(LDSFLAGS) >+AC_MSG_CHECKING(whether linker accepts version scripts) >+AC_TRY_LINK(,, >+ [AC_MSG_RESULT(yes); LDSFLAGS='-Wl,--version-script=$(top_srcdir)/nfnl.version']; >+ AC_MSG_RESULT(no)) >+LDFLAGS="$OLDLDFLAGS" I don't think most of this is needed in practice - just use -fvisibility and -Wl,-version-script unconditionally from Makefile.am, most of the netfilter utilities don't work with anything but GNU and Linux. >@@ -0,0 +1,4 @@ >+{ >+ global: nfnl*; nlif*; >+ local: *; >+}; This ought to be NFNETLINK_1.0.1 { global: <individual symbol list, no wildcards>... local: *; }; -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html