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-rw-r--r--src/configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/configure.ac b/src/configure.ac
index b8aa813..f779ea2 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -13,6 +13,7 @@ AC_PROG_CC
AC_SUBST(STK)
AC_SUBST(CFLAGS)
+AC_SUBST(CPPFLAGS)
AC_SUBST(DEFS)
AC_SUBST(LFLAGS)
AC_SUBST(EXT)