blob: 854aca246b7857871d65a9ee7c1ecdbe34a51b61 (
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diff --git a/configure.ac b/configure.ac
index 920612f..06d5dfa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,6 +147,7 @@ AC_CHECK_DECLS([TIOCSRS485], [], [], [[#include <sys/ioctl.h>]])
# Check for RTS flags
AC_CHECK_DECLS([TIOCM_RTS], [], [], [[#include <sys/ioctl.h>]])
+test -n "$WARNING_CFLAGS" || \
WARNING_CFLAGS="-Wall \
-Wmissing-declarations -Wmissing-prototypes \
-Wnested-externs -Wpointer-arith \
@@ -178,6 +179,7 @@ AC_ARG_ENABLE([debug],
[enable_debug=$enableval],
[enable_debug=no])
+test -n "$CFLAGS" || \
AS_IF([test "x$enable_debug" = "xyes"], [
CFLAGS="-g -O0"
CXXFLAGS="-g -O0"
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