Merged revisions 66179,66283 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r66179 | gregory.p.smith | 2008-09-02 22:57:48 -0700 (Tue, 02 Sep 2008)

  Fix issue 3645: OpenBSD required -lcurses when linking with readline
  to get the correct completion_matches function to avoid crashes on
  x86_64 (amd64).
........
  r66283 | gregory.p.smith | 2008-09-06 22:15:18 -0700 (Sat, 06 Sep 2008)

  - Issue #1204: The configure script now tests for additional libraries
    that may be required when linking against readline.  This fixes issues
    with x86_64 builds on some platforms (at least a few Linux flavors as
    well as OpenBSD/amd64).
........

1 files changed, 32 insertions, 8 deletions

diff --git a/configure.in b/configure.in
index bc91c07..7f3b9f7 100644
--- a/configure.in
+++ b/configure.in
@@ -3220,16 +3220,40 @@ fi
 # check where readline lives
 # save the value of LIBS so we don't actually link Python with readline
 LIBS_no_readline=$LIBS
-AC_CHECK_LIB(readline, readline)
-if test "$ac_cv_have_readline_readline" = no
-then
-  AC_CHECK_LIB(termcap, readline)
+
+# On some systems we need to link readline to a termcap compatible
+# library.  NOTE: Keep the precedence of listed libraries synchronised
+# with setup.py.
+py_cv_lib_readline=no
+AC_MSG_CHECKING([how to link readline libs])
+for py_libtermcap in "" ncursesw ncurses curses termcap; do
+  if test -z "$py_libtermcap"; then
+    READLINE_LIBS="-lreadline"
+  else
+    READLINE_LIBS="-lreadline -l$py_libtermcap"
+  fi
+  LIBS="$READLINE_LIBS $LIBS_no_readline"
+  AC_LINK_IFELSE(
+    [AC_LANG_CALL([],[readline])],
+    [py_cv_lib_readline=yes])
+  if test $py_cv_lib_readline = yes; then
+    break
+  fi
+done
+# Uncomment this line if you want to use READINE_LIBS in Makefile or scripts
+#AC_SUBST([READLINE_LIBS])
+if test $py_cv_lib_readline = !yes; then
+  AC_MSG_RESULT([none])
+else
+  AC_MSG_RESULT([$READLINE_LIBS])
+  AC_DEFINE(HAVE_LIBREADLINE, 1,
+    [Define if you have the readline library (-lreadline).])
 fi
 
 # check for readline 2.1
 AC_CHECK_LIB(readline, rl_callback_handler_install,
 	AC_DEFINE(HAVE_RL_CALLBACK, 1,
-        [Define if you have readline 2.1]), , )
+        [Define if you have readline 2.1]), ,$READLINE_LIBS)
 
 # check for readline 2.2
 AC_TRY_CPP([#include <readline/readline.h>],
@@ -3245,17 +3269,17 @@ fi
 # check for readline 4.0
 AC_CHECK_LIB(readline, rl_pre_input_hook,
 	AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1,
-        [Define if you have readline 4.0]), , )
+        [Define if you have readline 4.0]), ,$READLINE_LIBS)
 
 # also in 4.0
 AC_CHECK_LIB(readline, rl_completion_display_matches_hook,
 	AC_DEFINE(HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK, 1,
-        [Define if you have readline 4.0]), , )
+        [Define if you have readline 4.0]), ,$READLINE_LIBS)
 
 # check for readline 4.2
 AC_CHECK_LIB(readline, rl_completion_matches,
 	AC_DEFINE(HAVE_RL_COMPLETION_MATCHES, 1,
-        [Define if you have readline 4.2]), , )
+        [Define if you have readline 4.2]), ,$READLINE_LIBS)
 
 # also in readline 4.2
 AC_TRY_CPP([#include <readline/readline.h>],