From: Jens Steinhauser <redacted>
Date: Fri, 14 Nov 2014 00:43:25 +0000 (+0100)
Subject: Check the version of the AX_CXX_COMPILE_STDCXX_11 macro.
X-Git-Tag: libsigrok-0.4.0~769
X-Git-Url: http://sigrok.org/gitweb/?a=commitdiff_plain;ds=sidebyside;h=ff50ad701e6f945cec972465a35c285dbaddd329;p=libsigrok.git

Check the version of the AX_CXX_COMPILE_STDCXX_11 macro.
---

diff --git a/autogen.sh b/autogen.sh
index f683d318..79cec4c2 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -54,6 +54,18 @@ fi
 echo "Generating build system..."
 ${LIBTOOLIZE} --install --copy --quiet || exit 1
 aclocal ${ACLOCAL_DIR} || exit 1
+
+# check the version of a specific autoconf macro that tends to cause problems
+CXXMACROVERSION=$(
+	grep -B 5 'm4_define(\[_AX_CXX_COMPILE_STDCXX_11_testbody\]' aclocal.m4 |
+	sed -nr 's/.*serial[[:space:]]+([[:digit:]]+).*/\1/p'
+)
+if [ "$CXXMACROVERSION" -lt 4 ]; then
+	echo "error: the AX_CXX_COMPILE_STDCXX_11 macro on this system is too old."
+	echo "(found version $CXXMACROVERSION, at least 4 is required)"
+	exit 1
+fi
+
 autoheader || exit 1
 automake --add-missing --copy || exit 1
 autoconf || exit 1