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-rw-r--r--ares/configure.ac16
1 files changed, 16 insertions, 0 deletions
diff --git a/ares/configure.ac b/ares/configure.ac
index 80eecda20..57f16c3cb 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -231,6 +231,22 @@ else
AC_MSG_RESULT([no])
fi
+AC_MSG_CHECKING([whether we are using the DEC/Compaq C compiler])
+CURL_CHECK_DEF([__DECC], [], [silent])
+CURL_CHECK_DEF([__DECC_VER], [], [silent])
+if test "$curl_cv_have_def___DECC" = "yes" ||
+ test "$curl_cv_have_def___DECC_VER" = "yes"; then
+ AC_MSG_RESULT([yes])
+ dnl Select strict ANSI C compiler mode
+ CFLAGS="$CFLAGS -std1"
+ dnl Generate verbose messages for errors and warnings
+ CFLAGS="$CFLAGS -verbose"
+ dnl Generate warnings for missing function prototypes
+ CFLAGS="$CFLAGS -warnprotos"
+else
+ AC_MSG_RESULT([no])
+fi
+
CURL_CHECK_COMPILER_HALT_ON_ERROR
CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE