diff --git a/libs/unimrcp/build/acmacros/sofia-sip.m4 b/libs/unimrcp/build/acmacros/sofia-sip.m4
index b2456dea47..95d6f50262 100644
--- a/libs/unimrcp/build/acmacros/sofia-sip.m4
+++ b/libs/unimrcp/build/acmacros/sofia-sip.m4
@@ -17,6 +17,7 @@ AC_DEFUN([UNIMRCP_CHECK_SOFIA],
     sofiasrcdir="libsofia-sip-ua"
     for dir in $sofia_path ; do
         cd $dir && sofiadir=`pwd` && cd - > /dev/null
+	sofiadirsrc=`(cd $srcdir/$dir && pwd)`
         if test -f "$dir/$sofiaconfig"; then
             found_sofia="yes"
             UNIMRCP_SOFIA_INCLUDES="`pkg-config --cflags $dir/$sofiaconfig`"
@@ -26,7 +27,7 @@ AC_DEFUN([UNIMRCP_CHECK_SOFIA],
         fi
         if test -d "$dir/$sofiasrcdir"; then
             found_sofia="yes"
-            UNIMRCP_SOFIA_INCLUDES="-I$sofiadir/$sofiasrcdir -I$sofiadir/$sofiasrcdir/bnf -I$sofiadir/$sofiasrcdir/features -I$sofiadir/$sofiasrcdir/http -I$sofiadir/$sofiasrcdir/ipt -I$sofiadir/$sofiasrcdir/iptsec -I$sofiadir/$sofiasrcdir/msg -I$sofiadir/$sofiasrcdir/nea -I$sofiadir/$sofiasrcdir/nta -I$sofiadir/$sofiasrcdir/nth -I$sofiadir/$sofiasrcdir/nua -I$sofiadir/$sofiasrcdir/sdp -I$sofiadir/$sofiasrcdir/sip -I$sofiadir/$sofiasrcdir/soa -I$sofiadir/$sofiasrcdir/sresolv -I$sofiadir/$sofiasrcdir/stun -I$sofiadir/$sofiasrcdir/su -I$sofiadir/$sofiasrcdir/tport -I$sofiadir/$sofiasrcdir/url"
+            UNIMRCP_SOFIA_INCLUDES="-I$sofiadir/$sofiasrcdir -I$sofiadir/$sofiasrcdir/bnf -I$sofiadir/$sofiasrcdir/features -I$sofiadir/$sofiasrcdir/http -I$sofiadir/$sofiasrcdir/ipt -I$sofiadir/$sofiasrcdir/iptsec -I$sofiadir/$sofiasrcdir/msg -I$sofiadir/$sofiasrcdir/nea -I$sofiadir/$sofiasrcdir/nta -I$sofiadir/$sofiasrcdir/nth -I$sofiadir/$sofiasrcdir/nua -I$sofiadir/$sofiasrcdir/sdp -I$sofiadir/$sofiasrcdir/sip -I$sofiadir/$sofiasrcdir/soa -I$sofiadir/$sofiasrcdir/sresolv -I$sofiadir/$sofiasrcdir/stun -I$sofiadir/$sofiasrcdir/su -I$sofiadir/$sofiasrcdir/tport -I$sofiadir/$sofiasrcdir/url -I$sofiadirsrc/$sofiasrcdir -I$sofiadirsrc/$sofiasrcdir/bnf -I$sofiadirsrc/$sofiasrcdir/features -I$sofiadirsrc/$sofiasrcdir/http -I$sofiadirsrc/$sofiasrcdir/ipt -I$sofiadirsrc/$sofiasrcdir/iptsec -I$sofiadirsrc/$sofiasrcdir/msg -I$sofiadirsrc/$sofiasrcdir/nea -I$sofiadirsrc/$sofiasrcdir/nta -I$sofiadirsrc/$sofiasrcdir/nth -I$sofiadirsrc/$sofiasrcdir/nua -I$sofiadirsrc/$sofiasrcdir/sdp -I$sofiadirsrc/$sofiasrcdir/sip -I$sofiadirsrc/$sofiasrcdir/soa -I$sofiadirsrc/$sofiasrcdir/sresolv -I$sofiadirsrc/$sofiasrcdir/stun -I$sofiadirsrc/$sofiasrcdir/su -I$sofiadirsrc/$sofiasrcdir/tport -I$sofiadirsrc/$sofiasrcdir/url"
             UNIMRCP_SOFIA_LIBS="$sofiadir/$sofiasrcdir/libsofia-sip-ua.la"
 	    sofia_version="`pkg-config --modversion $sofiadir/packages/sofia-sip-ua.pc`"
             break
diff --git a/libs/unimrcp/configure.ac b/libs/unimrcp/configure.ac
index f0fa56f737..4f112af034 100644
--- a/libs/unimrcp/configure.ac
+++ b/libs/unimrcp/configure.ac
@@ -40,6 +40,12 @@ AC_SUBST(UNI_DOTTED_VERSION)
 AC_SUBST(UNI_LT_VERSION)
 AC_SUBST(PLUGIN_LT_VERSION)
 
+# Absolute source/build directory
+unimrcp_srcdir=`(cd $srcdir && pwd)`
+unimrcp_builddir=`pwd`
+AC_SUBST(unimrcp_srcdir)
+AC_SUBST(unimrcp_builddir)
+
 echo "UniMRCP Version: ${UNI_DOTTED_VERSION}"
 
 # Check APR
diff --git a/libs/unimrcp/modules/mrcp-sofiasip/Makefile.am b/libs/unimrcp/modules/mrcp-sofiasip/Makefile.am
index 841a220971..ec0862f54d 100644
--- a/libs/unimrcp/modules/mrcp-sofiasip/Makefile.am
+++ b/libs/unimrcp/modules/mrcp-sofiasip/Makefile.am
@@ -1,6 +1,7 @@
 MAINTAINERCLEANFILES 	   = Makefile.in
 
 AM_CPPFLAGS                = -Iinclude \
+                             -I$(unimrcp_srcdir)/modules/mrcp-sofiasip/include \
                              -I$(top_srcdir)/libs/mrcpv2-transport/include \
                              -I$(top_srcdir)/libs/mrcp-signaling/include \
                              -I$(top_srcdir)/libs/mrcp/include \
diff --git a/libs/unimrcp/modules/mrcp-unirtsp/Makefile.am b/libs/unimrcp/modules/mrcp-unirtsp/Makefile.am
index 3879890d2f..029233e4a4 100644
--- a/libs/unimrcp/modules/mrcp-unirtsp/Makefile.am
+++ b/libs/unimrcp/modules/mrcp-unirtsp/Makefile.am
@@ -1,6 +1,7 @@
 MAINTAINERCLEANFILES 	   = Makefile.in
 
 AM_CPPFLAGS                = -Iinclude \
+                             -I$(unimrcp_srcdir)/modules/mrcp-unirtsp/include \
                              -I$(top_srcdir)/libs/mrcp-signaling/include \
                              -I$(top_srcdir)/libs/mrcp/include \
                              -I$(top_srcdir)/libs/mrcp/message/include \
diff --git a/libs/unimrcp/platforms/libunimrcp-client/Makefile.am b/libs/unimrcp/platforms/libunimrcp-client/Makefile.am
index a30db7b112..d6e73e4919 100644
--- a/libs/unimrcp/platforms/libunimrcp-client/Makefile.am
+++ b/libs/unimrcp/platforms/libunimrcp-client/Makefile.am
@@ -1,7 +1,7 @@
 MAINTAINERCLEANFILES 	    = Makefile.in
 
 AM_CPPFLAGS                 = -I$(top_srcdir)/platforms/libunimrcp-client/include \
-                              -I$(top_srcdir)/modules/mrcp-sofiasip/include \
+                              -I$(unimrcp_srcdir)/modules/mrcp-sofiasip/include \
                               -I$(top_srcdir)/modules/mrcp-unirtsp/include \
                               -I$(top_srcdir)/libs/mrcp-client/include \
                               -I$(top_srcdir)/libs/mrcp-signaling/include \
diff --git a/libs/unimrcp/platforms/libunimrcp-server/Makefile.am b/libs/unimrcp/platforms/libunimrcp-server/Makefile.am
index 4c8d91e205..98ae5e5320 100644
--- a/libs/unimrcp/platforms/libunimrcp-server/Makefile.am
+++ b/libs/unimrcp/platforms/libunimrcp-server/Makefile.am
@@ -1,7 +1,7 @@
 MAINTAINERCLEANFILES 	    = Makefile.in
 
 AM_CPPFLAGS                 = -I$(top_srcdir)/platforms/libunimrcp-server/include \
-                              -I$(top_srcdir)/modules/mrcp-sofiasip/include \
+                              -I$(unimrcp_srcdir)/modules/mrcp-sofiasip/include \
                               -I$(top_srcdir)/modules/mrcp-unirtsp/include \
                               -I$(top_srcdir)/libs/mrcp-server/include \
                               -I$(top_srcdir)/libs/mrcp-engine/include \