diff --git a/configure b/configure
index a13a739ad2..2378cc74fd 100755
--- a/configure
+++ b/configure
@@ -20494,6 +20494,8 @@ if test "$USE_UNIX" = 1 ; then
 
 fi
 
+export CC CFLAGS CPP CPPFLAGS CXX CXXFLAGS LDD LDFLAGS OBJCFLAGS OBJCXXFLAGS
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
 $as_echo_n "checking for ANSI C header files... " >&6; }
diff --git a/configure.in b/configure.in
index e168e56e6f..1159b013c6 100644
--- a/configure.in
+++ b/configure.in
@@ -1477,6 +1477,10 @@ if test "$USE_UNIX" = 1 ; then
     AC_DEFINE(__UNIX__)
 fi
 
+dnl Values of these variables shouldn't change any longer from now on, we
+dnl export them to ensure they're picked up by sub-configure scripts.
+export CC CFLAGS CPP CPPFLAGS CXX CXXFLAGS LDD LDFLAGS OBJCFLAGS OBJCXXFLAGS
+
 dnl ------------------------------------------------------------------------
 dnl Check for headers
 dnl ------------------------------------------------------------------------