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Automake includes full support for C++.
Any package including C++ code must define the output variable
CXX in configure.ac; the simplest way to do this is to use
the AC_PROG_CXX macro (see Particular
Program Checks in The Autoconf Manual).
A few additional variables are defined when a C++ source file is seen:
CXX ¶The name of the C++ compiler.
CXXFLAGS ¶Any flags to pass to the C++ compiler.
AM_CXXFLAGS ¶The maintainer’s variant of CXXFLAGS.
CXXCOMPILE ¶The command used to actually compile a C++ source file. The file name is appended to form the complete command line.
CXXLINK ¶The command used to actually link a C++ program.