Mattias Brändström writes: > configure:9316: checking SDL_ttf.h presence > configure:9327: g++ -E conftest.cc > configure:9343:21: SDL_ttf.h: No such file or directory > > Which fails since it doesn't seem to use my CXXFLAGS variable at all. -I flags belong into CPPFLAGS. > I also get this message from ./configure: > > configure: WARNING: SDL_ttf.h: accepted by the compiler, rejected by the > preprocessor! > configure: WARNING: SDL_ttf.h: proceeding with the preprocessor's result > configure: WARNING: ## ------------------------------------ ## > configure: WARNING: ## Report this to bug-autoconf@xxxxxxxx ## > configure: WARNING: ## ------------------------------------ ## > > Is this a bug? What is the difference between checking for usability and > checking for presence? Shouldn't autoconf use my CXXFLAGS when checking > for a header files presence? In general, it's the difference between the file is there and you can compile a test program that uses it. If there is a difference, then often you need a prerequisite header. But I believe if you adjust your call using the advice above, this problem will go away for you. -- Peter Eisentraut peter_e@xxxxxxx
