diff --git a/configure b/configure
index 1869ad6..25b1d8c 100755
--- a/configure
+++ b/configure
@@ -4672,8 +4672,8 @@ _ACEOF
 fi
 
 
-CFLAGS="-Wall -Wno-sign-compare @OGG_CFLAGS@ @VORBIS_CFLAGS@ @AVILIB_CFLAGS@ @DEBUG_CFLAGS@ @PROFILING_CFLAGS@"
-CXXFLAGS="-Wall -Wno-sign-compare @OGG_CFLAGS@ @VORBIS_CFLAGS@ @AVILIB_CFLAGS@ @DEBUG_CFLAGS@ @PROFILING_CFLAGS@"
+CFLAGS="-Wall -Wno-sign-compare @OGG_CFLAGS@ @VORBIS_CFLAGS@ @AVILIB_CFLAGS@ @DEBUG_CFLAGS@ @PROFILING_CFLAGS@ $CFLAGS"
+CXXFLAGS="-Wall -Wno-sign-compare @OGG_CFLAGS@ @VORBIS_CFLAGS@ @AVILIB_CFLAGS@ @DEBUG_CFLAGS@ @PROFILING_CFLAGS@ $CXXFLAGS"
 
                     ac_config_files="$ac_config_files Makefile avilib/Makefile"
 cat >confcache <<\_ACEOF