I have problems when compiling CB on Fedora Development which contains autoconf 2.61. It ends with
+ ./bootstrap
Autoconf 2.50 or above is required. Aborting build...
The reason is a wrong regular expression when checking for the version. The current expression '1.*|2.[0-4]' checks for the following strings
- "1" and zero!!! or more occurences of any character => 2.61 has a match
- "2" and any character and a number between 0 and 4
A point must be checked with '\.' and not with '.'
The secure variant could be '1\.[0-9]+|2\.[0-4]', which will check for version 1.x and 2.0 till 2.4. Similar expression are needed for automake (1\.[0-6]) and libtool (1\.[0-3]) checks.