prevent potential segfaults on boxes where time_t is not long

[rrdtool.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 269665c..bac2165 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -331,7 +331,7 @@ CFLAGS="$CFLAGS -D_GNU_SOURCE"
 
 dnl which flags does the compiler support?
 if test "x$GCC" = "xyes"; then
-  for flag in -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -W; do
+  for flag in -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wc++-compat -Wold-style-definition -W; do
     oCFLAGS="$CFLAGS"
     CFLAGS="$CFLAGS $flag"
     cachename=rd_cv_gcc_flag_`echo $flag|sed 's/[[^A-Za-z]]/_/g'`