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-rw-r--r--configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 3b4602f5..d51fa19c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -107,6 +107,7 @@ AC_SUBST(PLATFORMCPPFLAGS)
AC_PROG_CC
AC_PROG_CC_C99
AM_PROG_CC_C_O
+AC_PROG_CPP
AC_USE_SYSTEM_EXTENSIONS
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL