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- -- Macro: AC_PROG_CXX ([COMPILER-SEARCH-LIST])
- Determine a C++ compiler to use. Check whether the environment
- variable `CXX' or `CCC' (in that order) is set; if so, then set
- output variable `CXX' to its value.
- Otherwise, if the macro is invoked without an argument, then
- search for a C++ compiler under the likely names (first `g++' and
- `c++' then other names). If none of those checks succeed, then as
- a last resort set `CXX' to `g++'.
- This macro may, however, be invoked with an optional first argument
- which, if specified, must be a blank-separated list of C++
- compilers to search for. This just gives the user an opportunity
- to specify an alternative search list for the C++ compiler. For
- example, if you didn't like the default order, then you could
- invoke `AC_PROG_CXX' like this:
- AC_PROG_CXX([gcc cl KCC CC cxx cc++ xlC aCC c++ g++])
- If using the GNU C++ compiler, set shell variable `GXX' to `yes'.
- If output variable `CXXFLAGS' was not already set, set it to `-g
- -O2' for the GNU C++ compiler (`-O2' on systems where G++ does not
- accept `-g'), or `-g' for other compilers.
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