X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=autogen.sh;h=26e179361e3d35d6404ed94e25f1190f7bb9a6e7;hb=7637cc60ba0201202eec98f66d8494e6ba3d53bd;hp=f683d318efbcf14d074abebd7ece39820a77ab57;hpb=50985c2019b2b5a6ce394589d89ee925b4f5e3a9;p=libsigrok.git

diff --git a/autogen.sh b/autogen.sh
index f683d318..26e17936 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -54,6 +54,24 @@ 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 -n 's/.*serial[ \t][ \t]*\([0-9][0-9]*\).*/\1/p'
+)
+if [ "x$CXXMACROVERSION" = "x" ]; then
+	echo "--- Warning: AX_CXX_COMPILE_STDCXX_11 macro not found."
+	echo "--- You won't be able to build the language bindings!"
+	echo "--- More info: http://sigrok.org/wiki/Building#FAQ"
+fi
+if [ "x$CXXMACROVERSION" != "x" ] && [ "$CXXMACROVERSION" -lt 4 ]; then
+	echo "--- Warning: AX_CXX_COMPILE_STDCXX_11 macro is too old."
+	echo "--- (found version $CXXMACROVERSION, at least 4 is required)"
+	echo "--- You won't be able to build the language bindings!"
+	echo "--- More info: http://sigrok.org/wiki/Building#FAQ"
+fi
+
 autoheader || exit 1
 automake --add-missing --copy || exit 1
 autoconf || exit 1