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Re: [ft] Included header files location
From: |
Werner LEMBERG |
Subject: |
Re: [ft] Included header files location |
Date: |
Tue, 23 Dec 2014 09:00:12 +0100 (CET) |
> $ freetype-config --ftversion
> 2.5.2
OK, this means new FreeType header file layout.
> $ freetype-config --cflags
> -I/usr/include/freetype2
>
> #Makefile:
> INCLUDE=-I/usr/include/freetype2 -I/usr/include/freetype2/confg
> CC=g++
> LDLIBS=-lglut -lGLEW -lGL
> all: main
> clean:
> rm -f *.o main
> .PHONY: all clean
Uh, oh, this is not the way you should use `freetype-config'. The
right solution is to let the `make' program do the work since you
obviously don't use GNU autotools or something similar for creating a
`configure' script. I *strongly* suggest that you get more
information on how Makefiles should be written.
One possible solution:
INCLUDE=`freetype-config --cflags`
Note that the `--cflags' option returns *all* header include paths for
FreeType. It's thus completely unnecessary to manually include
another header directory. BTW, have you noted the typo `confg'?
> #include <ft2build.h>
> #include FT_FREETYPE_H
This is OK.
> $ make
> g++ main.cpp -lglut -lGLEW -lGL -o main
Soo... Where is the rule to pass your `INCLUDE' variable to g++?
Assuming that you use GNU make, a call
make -p | less
shows the complete database the `make' program uses to construct
implicit rules in case there are no explicit ones. A search for `g++'
leads to the variable `CXX' – you should *not* abuse `CC' for a C++
compiler. And a search for an `INCLUDE' variable yields nothing: It's
simply not used!
To solve the mystery: Rename `INCLUDE' to `CPPFLAGS' (valid for both
`CC' and CXX'), and it should work.
For the future, I suggest that you use *explicit* rules to avoid such
unpleasant surprises. Even better, use Makefile generator programs
like `autotools' or `cmake', which makes all this stuff much easier.
Werner
- [ft] Included header files location, Dave Coventry, 2014/12/22
- Re: [ft] Included header files location, Khaled Hosny, 2014/12/22
- Re: [ft] Included header files location, Dave Coventry, 2014/12/22
- Re: [ft] Included header files location, J Decker, 2014/12/22
- Re: [ft] Included header files location, Dave Coventry, 2014/12/23
- Re: [ft] Included header files location, Werner LEMBERG, 2014/12/23
- Re: [ft] Included header files location, Dave Coventry, 2014/12/23
- Re: [ft] Included header files location,
Werner LEMBERG <=
- Re: [ft] Included header files location, Dave Coventry, 2014/12/23
- Re: [ft] Included header files location, Werner LEMBERG, 2014/12/23