Improved some libraries detection logic

autoconf AC_SEARCH_LIBS offers more functionality than AC_CHECK_LIB

diff --git a/configure.in b/configure.in
index cd910676ca73ff3cf1b501a4d2d912475ff7415e..50b765ed46a7ea3e5ffcbf090f18aea4ed33cc99 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -2885,9 +2885,11 @@ AC_CHECK_TYPE(mtyp_t,AC_DEFINE(HAVE_MTYP_T,1,[mtyp_t is defined by the system he
 #include <sys/msg.h>])
 
 dnl Check for needed libraries
-AC_CHECK_LIB(nsl, main)
-AC_CHECK_LIB(socket, main)
-AC_CHECK_LIB(opcom_stack,main)
+AC_SEARCH_LIBS([gethostbyname],[nsl resolv bind])
+AC_SEARCH_LIBS([res_init],[resolv])
+AC_SEARCH_LIBS([bind],[socket])
+AC_SEARCH_LIBS([opcom_stack_trace],[opcom_stack])
+AC_SEARCH_LIBS([strlcpy], [bsd])
 dnl Check for Winsock only on MinGW, on Cygwin we must use emulated BSD socket API
 case "$host_os" in
   mingw|mingw32)
@@ -2957,19 +2959,7 @@ dnl end rip
                esac
   fi
 
-AC_CHECK_LIB(bsd, main)
 AC_CHECK_LIB(regex, main, [REGEXLIB="-lregex"])
-AC_CHECK_LIB(bind, gethostbyname)
-if test $ac_cv_lib_bind_gethostbyname = "no" ; then
-    case "$host" in
-       i386-*-freebsd*)
-               AC_MSG_NOTICE([skipping libresolv checks for $host])
-               ;;
-       *)
-               AC_CHECK_LIB(resolv, main)
-               ;;
-    esac
-fi
 case "$host_os" in
 mingw|mingw32)
        AC_MSG_NOTICE([Use MSVCRT for math functions.])