C++ availability is not checked by configure. If it missing, libutp build fails.

[pathetic_loser]

Initial configuration:

You should have system where C compiler and all req'd libs/headers are installed except C++ compiler (like g++). For example, this is easy to achieve on any Ubuntu as long as you install everything but C++ compiler itself. Tested with latest SVN revision.

To reproduce:

Run configure and make as usually.
Configure will complete without errors and it will enable libutp as well.
However it will not check if C++ compiler available before enabling uTP support.

Result:

Compile fails when trying to build libutp which is quite predictable:

  CXX    utp.o
  CXX    utp_utils.o
../../depcomp: line 611: exec: g++: not found
make[2]: *** [utp_utils.o] Error 127
make[2]: *** Waiting for unfinished jobs....
../../depcomp: line 611: exec: g++: not found
make[2]: *** [utp.o] Error 127

Expected:

configure should check if C++ compiler is present before enabling uTP support.

[jordan]

fixed in r12954.

Unfortunately, 2.40 is already out. I've committed this to trunk, and will backport to the 2.4x branch if/when the dev team decides to make another 2.4x release.