--- qsampler/trunk/configure.ac	2019/06/18 07:49:48	3516
+++ qsampler/trunk/configure.ac	2019/07/25 10:08:43	3523
@@ -1,5 +1,5 @@
 # Process this file with autoconf to produce a configure script.
-AC_INIT(Qsampler, 0.5.6, rncbc@rncbc.org, qsampler)
+AC_INIT(Qsampler, 0.5.7, rncbc@rncbc.org, qsampler)
 
 AC_CONFIG_SRCDIR(src/qsampler.cpp)
 AC_CONFIG_HEADERS(src/config.h)
@@ -146,7 +146,8 @@
 ])
 ac_gxx_version_major=$ac_cv_gxx_version_major
 if test $ac_gxx_version_major -ge 4 -a $ac_gxx_version_major -lt 6; then
-   CXXFLAGS="-std=c++11 $CXXFLAGS"
+   CPPFLAGS="-std=c++11 $CPPFLAGS"
+   ac_cflags="-std=c++11 $ac_cflags"
 fi
 
 # Check for proper flags.