check if LD_AS_NEEDED breaks linking with libreadline fixes #7209

Signed-off-by: Simo Sorce <idra@samba.org>
(cherry picked from commit 7aa8af144efc6d57f33b90ac856096aa7089468d)
(cherry picked from commit f2330cc029243c70043b18554241363d890c96e7)

diff --git a/source3/configure.in b/source3/configure.in
index 416fb67ec78bddc9174ede40a640e2857f143f5e..4e9ee1ba6043956d7bce5ebef7d2dbcf93e39751 100644 (file)
--- a/source3/configure.in
+++ b/source3/configure.in
@@ -1706,6 +1706,7 @@ fi
 
 AC_MSG_RESULT($BLDSHARED)
 
+saved_before_as_needed_ldflags="$LDFLAGS"
 for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
        saved_ldflags="$LDFLAGS"
        AC_MSG_CHECKING([if $flags works])
@@ -1719,6 +1720,25 @@ for flags in "-Wl,--as-needed" "-Wl,-z,ignore" "-z ignore" ; do
        test x"$ld_as_needed_flag_found" = xyes && break
 done
 
+# check if we have to disable LD_AS_NEEDED_FLAG:
+# On some systems for a veriety of reasons linking with
+# -Wl,--as-needed -lreadline -lncurses fails
+# we have to retest, if these combination is detected before.
+# Bugzilla #7209
+
+if test x$ac_cv_lib_readline_rl_callback_handler_install = xyes ; then
+       if test x$ld_as_needed_flag_found = xyes ; then
+               AC_MSG_CHECKING([if $LD_AS_NEEDED_FLAG works with readline])
+               # try if check no fails
+               save_LIBS=$LIBS
+               LIBS="$LIBS $TERMLIBS"
+               AC_TRY_LINK([], [rl_callback_handler_install();], [AC_MSG_RESULT([yes])],[ AC_MSG_RESULT([no]); LDFLAGS="$saved_before_as_needed_ldflags"])
+               LIBS="$save_LIBS"
+        fi
+fi
+
+
+
 # for historical reasons almost all linkers don't complain about unresolved
 # symbols in shared libs. Except for the internal samba modules we want to get
 # errors when we produce a shared lib with unresolved symbols. On some