configure: use -ansi, not -std=c90.

* configure: In maintainer mode, we specify C90. Some versions
of clang don't like -std=c90, but only the -ansi option.

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index a3b47e6b..18f681d7 100755
--- a/configure
+++ b/configure
@@ -798,7 +798,7 @@ if [ $cplusplus ] ; then
 else
    printf "no\n"
    if [ $maintainer ] ; then
-     lang_flags="-std=c90 $lang_flags"
+     lang_flags="-ansi $lang_flags"
    else
      lang_flags="-std=c99 $lang_flags"
    fi