OpenGL libraries

[Ryan Schmidt]

On Nov 12, 2018, at 13:17, Mark Brethen wrote:

> Per the attached Calculix-cgx Makefile, I needed to modify it to indicate the OpenGL framework. I tried this:
> 
> CFLAGS = -O2 -Wall -Wno-narrowing \
>  -I./ \
>  -I/usr/include \
>  -I../../libSNL/src \
>  -I../../glut-3.5/src \
>  -I/usr/X11/include 
> 
> LFLAGS = \
>  -framework OpenGL -lGL -lGLU \
>  -lX11 -lXi -lXmu -lXext -lXt -lSM -lICE \
>  -lm -lpthread
> 
> .
> .
> .
> 
> cgx: $(OLIB) $(OUTIL) $(OULIB)
> 	g++  $(OULIB)  $(OLIB) $(OUTIL)  $(CFLAGS) $(LFLAGS) -o  $@
> 
> This didn’t work. Is LDFlags appropriate here? There isn’t a config file so in the portfile I pass the following @ pre-build:
> 
>    pre-build {
>        build.args          CC=${configure.cc} \
>                            CXX=${configure.cxx}
>    }

In what way didn't it work? Did you get an error? What error?

Certainly "-I/usr/include" in the CFLAGS is unnecessary because the compiler will look there automatically, and "-I/usr/X11/include" is inappropriate because we don't want to find anything there (we want to find X11 stuff in the MacPorts prefix).

That hardcoded "g++" in the Makefile will need to be replaced with "$(CXX)" in order for your build.args to work for that.