Re: make can not find .cpp file, any general comments or suggestions to debug?

[Paul D. Smith]

%% Lin George <address@hidden> writes:

  lg> I have solved this problem today. It is caused by
  lg> CFLAGS variable, which should be CXXFLAGS variable in
  lg> g++ -- I mis-defined the variable name CFLAGS in g++.

  lg> In my CFLAGS, I specified header file path (-I), so
  lg> related header files can not be found.

In general, you should add preprocessor flags (like -I and -D) to the
CPPFLAGS variable, not CFLAGS or CXXFLAGS.

CPPFLAGS is included in both CFLAGS and CXXFLAGS, plus separating out
these flags allows you to use them with other tools which might need
them to parse code, such as lint, makedepend, or whatever.

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