get rid of "unix" pre-defined macro when preprocessing Makefile

diff --git a/configure.in b/configure.in
index c768e33e0021c247ad00e8c606186565a3c0b0e3..25a5baa06fd8881ed1b95989a3234a073eb9222f 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -3162,7 +3162,7 @@ test "${exec_prefix}" != NONE &&
 # the C preprocessor to some helpful value like 1, or maybe the empty
 # string.  Needless to say consequent macro substitutions are less
 # than conducive to the makefile finding the correct directory.
-[cpp_undefs="`echo $srcdir $configuration $canonical |
+[cpp_undefs="`echo $srcdir $configuration $canonical unix |
   sed -e 's/[^a-zA-Z0-9_]/ /g' -e 's/^/ /' -e 's/  *$//' \
   -e 's/  */ -U/g' -e 's/-U[0-9][^ ]*//g'`"]