On Sun, Jan 8, 2012 at 10:28 PM, Philip Guenther <guent...@gmail.com> wrote: > On Sun, Jan 8, 2012 at 7:18 PM, Jeffrey Walton <noloa...@gmail.com> wrote: >> On Sun, Jan 8, 2012 at 9:36 PM, Pelias <scolecod...@gmail.com> wrote: >>> >>> I'm new to GNU make so I would like to know if I made any mistakes in the >>> way >>> I have written my Makefile. >>> One thing I'm not sure whether to append -DDEBUG/-DNDEBUG to CPPFLAGS or to >>> CFLAGS. >> >> If your make file is using both C and C++ files (and using implicit >> rules), you will want to apply DEBUG/NDEBUG to both. Otherwise, use >> CFLAGS for C and CPPFLAGS for C++. > > Not quite: the "CPP" in CPPFLAGS does not stand for "C++" but rather > for "C preprocessor". In the built-in rules, CPPFLAGS is part of the > commands for both C and C++. The variable that is passed to the C++ > compiler but not the C compiler is CXXFLAGS. > > So, if you want to pass a -D option to the C and C++ compiler, add it > to CPPFLAGS. Doh... you're right - my bad.
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