configure.ac: replace deprecated aliases

See https://www.gnu.org/software/libtool/manual/html_node/LT_005fINIT.html

    configure.ac:25: warning: The macro `AM_ENABLE_STATIC' is obsolete.
    configure.ac:25: You should run autoupdate.
    m4/ltoptions.m4:259: AM_ENABLE_STATIC is expanded from...
    configure.ac:25: the top level
    configure.ac:26: warning: The macro `AM_ENABLE_SHARED' is obsolete.
    configure.ac:26: You should run autoupdate.
    m4/ltoptions.m4:205: AM_ENABLE_SHARED is expanded from...
    configure.ac:26: the top level

diff --git a/configure.ac b/configure.ac
index 40ade600ecd890c7dfa67a7868e4f8ffaa7aef80..b35ac85c5d97fe7afa447e57af1c55134defc887 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -22,8 +22,8 @@ test "$prefix" = "/usr" && exec_prefix=""
 
 AC_USE_SYSTEM_EXTENSIONS
 
-AM_ENABLE_STATIC
-AM_ENABLE_SHARED
+AC_ENABLE_STATIC
+AC_ENABLE_SHARED
 
 AM_MAINTAINER_MODE