build system: Check for libnetlink.h in more than one directory.

And some minor cleanups..

diff --git a/configure.in b/configure.in
index f291956..252d16f 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -789,7 +789,7 @@ then
 
        if test $curl_config_status -ne 0
        then
-               with_libcurl="no"
+               with_libcurl="no ($with_curl_config failed)"
        else
                SAVE_CFLAGS=$CFLAGS
                CFLAGS="$CFLAGS $with_curl_cflags"
@@ -806,15 +806,10 @@ then
 
        if test $curl_config_status -ne 0
        then
-               with_libcurl="no"
+               with_libcurl="no ($with_curl_config failed)"
        else
                AC_CHECK_LIB(curl, curl_easy_init,
-                [
-                 # We need to do this to have `HAVE_LIBCURL' defined but
-                 # `-lcurl' NOT added to the default LDFLAGS.
-                       AC_DEFINE(HAVE_LIBCURL, 1,
-                                 [Define to 1 if you have the curl library.])
-                ],
+                [with_libcurl="yes"],
                 [with_libcurl="no (symbol 'curl_easy_init' not found)"],
                 [$with_curl_libs])
        fi
@@ -986,13 +981,8 @@ then
                with_libmysql="no"
        else
                AC_CHECK_LIB(mysqlclient, mysql_init,
-                [
-                 # We need to do this to have `HAVE_LIBMYSQLCLIENT' defined
-                 # but `-lmysqlclient' NOT added to the default LDFLAGS.
-                       AC_DEFINE(HAVE_LIBMYSQLCLIENT, 1,
-                                 [Define to 1 if you have the mysqlclient library.])
-                ],
-                [with_libmysql="no (libmysql not found)"],
+                [with_libmysql="yes"],
+                [with_libmysql="no (symbol 'mysql_init' not found)"],
                 [$with_mysql_libs])
        fi
 fi
@@ -1435,7 +1425,13 @@ then
        SAVE_CFLAGS=$CFLAGS
        CFLAGS="$CFLAGS $with_libnetlink_cflags"
 
-       AC_CHECK_HEADERS(iproute/libnetlink.h, [], [with_libnetlink="no (iproute/libnetlink.h not found)"],
+       with_libnetlink="no (libnetlink.h not found)"
+
+       AC_CHECK_HEADERS(libnetlink.h iproute/libnetlink.h linux/libnetlink.h,
+       [
+        with_libnetlink="yes"
+        break
+       ], [],
 [#include <stdio.h>
 #include <sys/types.h>
 #include <sys/socket.h>