rigol-ds: Add DS1000Z series support.

[libsigrok.git] / autogen.sh

diff --git a/autogen.sh b/autogen.sh
index 8685c3c8f7cabd2822a7e9a6468895443ff82a98..26e179361e3d35d6404ed94e25f1190f7bb9a6e7 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -58,16 +58,18 @@ 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'
+       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