From: Francis Dupont <fdupont@isc.org>
Date: Fri, 14 Oct 2016 11:50:03 +0000 (+0200)
Subject: [5049] Take and display C++ standard version in configure
X-Git-Tag: trac5060_base~5^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05e30403587a26846e52684d9398f932596f7bfb;p=thirdparty%2Fkea.git

[5049] Take and display C++ standard version in configure
---

diff --git a/configure.ac b/configure.ac
index 1cf71532fd..4dcb0a09ed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -116,6 +116,17 @@ if test $? -eq 0; then
   GNU_SED=yes
 fi
 
+# Display the C++ version
+AC_MSG_CHECKING([C++ version])
+cat > conftest.cpp << EOF
+long v = __cplusplus;
+EOF
+CXX_STANDARD=`$CXX $CXXFLAGS -E -o - conftest.cpp | grep '^long v = ' | $SED -e 's/^long v = //' -e 's/[[^0-9]]*$//' 2> /dev/null`
+if test -z "$CXX_STANDARD"; then
+	CXX_STANDARD="unknown"
+fi
+AC_MSG_RESULT([$CXX_STANDARD])
+
 # Linker options
 
 # check -R, "-Wl,-R" or -rpath
@@ -1622,6 +1633,7 @@ Package:
 C++ Compiler:
   CXX:             ${CXX}
   CXX_VERSION:     ${CXX_VERSION}
+  CXX_STANDARD:    ${CXX_STANDARD}
   DEFS:            ${DEFS}
   CPPFLAGS:        ${CPPFLAGS}
   CXXFLAGS:        ${CXXFLAGS}