--- a/configure.ac
+++ b/configure.ac
@@ -257,9 +257,9 @@ AX_COMPILER_VENDOR
 if test "x${cross_compiling}" = "xyes"; then
     CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
     case "$host" in
-    	 arm*-linux-gnueabi*|arm*-*-linux-gnueabi*)
+    	 arm*-linux-gnueabi*|arm*-*-linux-*)
 		# spandsp modem
-		ac_cv_file__dev_ptmx=yes
+		ac_cv_file__dev_ptmx=no
 		# libjs
 		export ac_cv_va_copy=yes
 		# srtp
@@ -276,7 +276,7 @@ if test "x${cross_compiling}" = "xyes";
 		export apr_cv_mutex_recursive=yes
 		export ac_cv_func_pthread_rwlock_init=yes
 		export apr_cv_type_rwlock_t=yes
-		export apr_cv_process_shared_works=yes
+		#export apr_cv_process_shared_works=no
 		export apr_cv_mutex_robust_shared=yes
 	 ;;
     esac
@@ -409,9 +409,6 @@ elif test "x${ax_cv_c_compiler_vendor}"
     APR_ADDTO(SWITCH_AM_CFLAGS, -fPIC)
     APR_ADDTO(SWITCH_AM_CXXFLAGS, -fPIC)
     AC_SUBST([AM_MOD_AVMD_CXXFLAGS], [-std=gnu99])      # FS-8809, needed for MAP_POPULATE
-    if test "$ac_cv_gcc_supports_w_no_unused_result" = yes; then
-      APR_ADDTO(SWITCH_AM_CFLAGS, -Werror)
-    fi
     if test "${enable_64}" = "yes"; then
 	case "$host" in
              *darwin*)
@@ -912,7 +909,6 @@ AC_CHECK_LIB(pthread, pthread_setschedpa
 
 AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket))
 
-AC_CHECK_FILE(/dev/ptmx, [AC_DEFINE(HAVE_DEV_PTMX, 1, [Define if you have /dev/ptmx])])
 AC_CHECK_LIB(util, openpty, [AC_DEFINE(HAVE_OPENPTY, 1, [Define if you have openpty()])])
 
 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[
@@ -1487,16 +1483,16 @@ AM_CONDITIONAL([HAVE_MYSQL],[test "$foun
 # perl checks
 #
 
-AC_CHECK_PROG(PERL,perl,[ac_cv_have_perl=yes],[ac_cv_have_perl=no])
+AC_CHECK_PROG(PERL,[perl],[ac_cv_have_perl=yes],[ac_cv_have_perl=no],[${STAGING_DIR}/host/usr/bin])
+PERL=$as_dir/$ac_word$ac_exec_ext
 
 # -a "x$ac_cv_have_EXTERN_h" != "xno"
 
 if test "x$ac_cv_have_perl" != "xno"; then
-   PERL=perl
-   PERL_SITEDIR="`$PERL -MConfig -e 'print $Config{archlib}'`"
-   PERL_LIBDIR="-L`$PERL -MConfig -e 'print $Config{archlib}'`/CORE"
+   PERL_SITEDIR="`$PERL -MConfig -e 'print $Config{archlibexp}'`"
+   PERL_LIBDIR="-L`$PERL -MConfig -e 'print $Config{archlibexp}'`/CORE"
    PERL_LIBS="`$PERL -MConfig -e 'print $Config{libs}'`"
-   PERL_CFLAGS="-w -DMULTIPLICITY `$PERL -MExtUtils::Embed -e ccopts | sed -e 's|-arch x86_64 -arch i386||'` -DEMBED_PERL"
+   PERL_CFLAGS="-w -DMULTIPLICITY `$PERL -MExtUtils::Embed -e ccopts | sed -e 's| -I/usr/local/include||g'` -DEMBED_PERL"
    PERL_LDFLAGS="`$PERL -MExtUtils::Embed -e ldopts| sed -e 's|-arch x86_64 -arch i386||'`"
    PERL_INC="`$PERL -MExtUtils::Embed -e perl_inc`"
 
@@ -1511,6 +1507,7 @@ if test "x$ac_cv_have_perl" != "xno"; th
    AC_CHECK_LIB([perl], [perl_alloc], ac_cv_use_libperl=yes, ac_cv_use_libperl=no)
    LDFLAGS="$save_LDFLAGS"
 
+   AC_SUBST(PERL)
    AC_SUBST(PERL_SITEDIR)
    AC_SUBST(PERL_LIBDIR)
    AC_SUBST(PERL_LIBS)
@@ -1526,16 +1523,16 @@ AM_CONDITIONAL([HAVE_PERL],[test "x$ac_c
 #
 
 AC_CHECK_PROG(PHP,php,[ac_cv_have_php=yes],[ac_cv_have_php=no])
-AC_CHECK_PROG(PHP_CONFIG,php-config,[ac_cv_have_php_config=yes],[ac_cv_have_php_config=no])
+AC_CHECK_PROG(PHP_CONFIG,php-config,[ac_cv_have_php_config=yes],[ac_cv_have_php_config=no],[${STAGING_DIR}/host/usr/bin])
 AM_CONDITIONAL([HAVE_PHP],[test "x$ac_cv_have_php" != "xno" -a "x$ac_cv_have_php_config" != "xno"])
 
 if test "x$ac_cv_have_php" != "xno" -a "x$ac_cv_have_php_config" != "xno"; then
    PHP=php
-   PHP_CONFIG=php-config
+   PHP_CONFIG=${STAGING_DIR}/host/usr/bin/php-config
    PHP_LDFLAGS="`$PHP_CONFIG --ldflags`"
    PHP_LIBS="`$PHP_CONFIG --libs | sed -r 's/ ?-l(bz2|pcre|xml2|gssapi_krb5|krb5|k5crypto|com_err|history|z|readline|gmp|ssl|crypto)//g'`"
    PHP_EXT_DIR="`$PHP_CONFIG --extension-dir`"
-   PHP_INC_DIR="`$PHP -r 'echo ini_get("include_path");' | cut -d: -f2`"
+   PHP_INC_DIR="`$PHP_CONFIG --includes | cut -d" " -f1 | cut -dI -f2`"
    PHP_INI_DIR="`$PHP_CONFIG --configure-options | tr " " "\n" | grep -- --with-config-file-scan-dir | cut -f2 -d=`"
    PHP_CFLAGS="`$PHP_CONFIG --includes`"
    AC_SUBST(PHP_LDFLAGS)
@@ -1569,12 +1566,12 @@ then
 		AC_MSG_RESULT([$with_python])
 		AC_SUBST([PYTHON], ["$with_python"])
 	else
-		AC_PATH_PROG([PYTHON], ["python"], ["no"], ["$PATH:/usr/bin:/usr/local/bin"])
+		AC_PATH_PROG([PYTHON], ["python3"], ["no"], ["$PATH:${STAGING_DIR}/host/bin:/usr/bin:/usr/local/bin"])
 	fi
 
 	if test "$PYTHON" != "no" ; then
 		AC_MSG_CHECKING([python version])
-		PYTHON_VER="`$PYTHON -V 2>&1 | cut -d' ' -f2`"
+		PYTHON_VER=`$PYTHON -c "import sys; print('%d.%d' % (sys.version_info[[0]], sys.version_info[[1]]))"`
 
 		if test -z "$PYTHON_VER" ; then
 			AC_MSG_ERROR([Unable to detect python version])
@@ -1593,12 +1590,12 @@ then
 		if test "$python_has_distutils" != "no" ; then
 			AC_MSG_CHECKING([location of site-packages])
 
-			PYTHON_SITE_DIR="`$PYTHON -c 'from distutils import sysconfig; print(sysconfig.get_python_lib(0));'`"
+			if test -d "`$PYTHON -c 'from distutils import sysconfig; print(sysconfig.get_python_lib(0));'`" ; then
+				PYTHON_SITE_DIR="`$PYTHON -c 'from distutils import sysconfig; print(sysconfig.get_python_lib(0));' | sed -e 's|\(^.*\)/host|/usr|g'`"
 
-			if test -z "$PYTHON_SITE_DIR" ; then
-				AC_MSG_ERROR([Unable to detect python site-packages path])
-			elif test ! -d "$PYTHON_SITE_DIR" ; then
-				AC_MSG_ERROR([Path $PYTHON_SITE_DIR returned by python does not exist!])
+				if test -z "$PYTHON_SITE_DIR" ; then
+					AC_MSG_ERROR([Unable to detect python site-packages path])
+				fi
 			fi
 			AC_MSG_RESULT([$PYTHON_SITE_DIR])
 			AC_SUBST([PYTHON_SITE_DIR], [$PYTHON_SITE_DIR])
@@ -1606,10 +1603,10 @@ then
 			#
 			# python distutils found, get settings from python directly
 			#
-			PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; flags = [[\"-I\" + sysconfig.get_python_inc(0), \"-I\" + sysconfig.get_python_inc(1), \" \".join(sysconfig.get_config_var(\"CFLAGS\").split())]]; print(\" \".join(flags));' | sed -e 's/-arch i386//g;s/-arch x86_64//g'`"
+			PYTHON_CFLAGS="`$PYTHON -c 'from distutils import sysconfig; flags = [[\"-I\" + sysconfig.get_python_inc(0), \"-I\" + sysconfig.get_python_inc(1), \" \".join(sysconfig.get_config_var(\"CFLAGS\").split())]]; print(\" \".join(flags));' | sed -e 's|host|usr|g'`"
 			PYTHON_LDFLAGS="`$PYTHON -c 'from distutils import sysconfig; libs = sysconfig.get_config_var(\"LIBS\").split() + sysconfig.get_config_var(\"SYSLIBS\").split(); libs.append(\"-lpython\"+sysconfig.get_config_var(\"VERSION\")); print(\" \".join(libs));'`"
 			PYTHON_LIB="`$PYTHON -c 'from distutils import sysconfig; print(\"python\" + sysconfig.get_config_var(\"VERSION\"));'`"
-			PYTHON_LIBDIR="`$PYTHON -c 'from distutils import sysconfig; print(sysconfig.get_config_var(\"LIBDIR\"));'`"
+			PYTHON_LIBDIR="`$PYTHON -c 'from distutils import sysconfig; print(sysconfig.get_config_var(\"LIBDIR\"));' | sed -e 's|host|usr|g'`"
 
 			# handle python being installed into /usr/local
 			AC_MSG_CHECKING([python libdir])