rigol-ds: Add DS1000Z series support.

[libsigrok.git] / autogen.sh

diff --git a/autogen.sh b/autogen.sh
index 79cec4c293580ee10a2961d7825c2887617d75b2..26e179361e3d35d6404ed94e25f1190f7bb9a6e7 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -55,15 +55,21 @@ 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
+# 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 [ "$CXXMACROVERSION" -lt 4 ]; then
-       echo "error: the AX_CXX_COMPILE_STDCXX_11 macro on this system is too old."
-       echo "(found version $CXXMACROVERSION, at least 4 is required)"
-       exit 1
+if [ "x$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