Re: Build with MinGW

[Hans-Bernhard B. <HBB...@t-...>]

On 25.03.2011 20:21, Bastian Märkisch wrote:
> When trying to build with MinGW and cairo/pango, I noticed a weird
> problem: make seems to have problems with variables defined like this:
>
> 	CAIRO_CFLAGS = $(shell pkg-config --cflags cairo)

Note that the make documentation pretty strongly recommends not to do 
that.  They recommend the other type of variable definition instead:

	CAIRO_CFLAGS := $(shell pkg-config --cflags cairo)

One of the issues is that with the '=' style definition, pkg-config 
would be called every single time that you use any command (indirectly) 
including $(CAIRO_CFLAGS).  Not something I fell particularly 
comfortable doing on MS Windows.

> -DGNUPLOT_PS_DIR="share/PostScript" -DGNUPLOT_JS_DIR="share/js"
> <snip>
> libs/include/freetype2 -Id:/Software/mingw-libs/include/libpng14
                          --^^--
> <snip>

Hmmm... I'm not sure drive letters are a good idea in makefiles (or 
anywhere in a MinGW environment, for that matter).  They tend to royally 
screw up make's usual interpretation of ':' for starters.

Is that raw MinGW, as opposed to MSYS+MinGW you're using?  AFAICS, 
that's not been the typical setup for quite some time now.