8.9 C++ Support

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).

C++ support doesn't mean that programs using the Qt library (and notably Qt's signal/slot mechanism) will be compiled correctly (using Qt's Meta Object Compiler). For that you have to have a look on the Qt support (see Qt Support).

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.