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-rw-r--r--ares/acinclude.m46
1 files changed, 6 insertions, 0 deletions
diff --git a/ares/acinclude.m4 b/ares/acinclude.m4
index fb3005020..18fac9a3e 100644
--- a/ares/acinclude.m4
+++ b/ares/acinclude.m4
@@ -57,6 +57,12 @@ dnl silently when invoked with three arguments.
AC_DEFUN([CURL_CHECK_DEF], [
AS_VAR_PUSHDEF([ac_HaveDef], [curl_cv_have_def_$1])dnl
AS_VAR_PUSHDEF([ac_Def], [curl_cv_def_$1])dnl
+ if test -z "$SED"; then
+ AC_MSG_ERROR([SED not set. Cannot continue without SED being set.])
+ fi
+ if test -z "$GREP"; then
+ AC_MSG_ERROR([GREP not set. Cannot continue without GREP being set.])
+ fi
ifelse($3,,[AC_MSG_CHECKING([for preprocessor definition of $1])])
tmp_exp=""
AC_PREPROC_IFELSE([