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On 1/23/22 10:12 Evan Laforge wrote:
Hi, this is a minor issue but pretty visible. In latest fltk from
github, every run of fltk-config prints "grep:
/nix/store/c20mk84ykvyfzixcxr0yg41sbrxsrfx4-fltk-1.4-c0f5080cb056919e898ac572e72fd62568dc307a/bin/FL/fl_config.h:
No such file or directory" which is quite frequent if build files are
using it.
I tracked this down to 6546814a23, which inserts a `if grep -q...`
[...]
... presumably it should know if cairo is
configured via @ substitution thing autotools does, rather than trying
to find a header, or at least it could know the absolute path to the
installed header presumably also via magic @s.
Yep, that's the plan. I'm going to change this once I figured out
another Cairo build related issue.
Greg's commit was only a temporary fix as he wrote too in another reply
and he "fixed the fix" in another commit.
Coincidentally, I'm interested in trying out the cairo backend so I'm
glad to see an example in there :)
The current Cairo support is not really a "backend", i.e. it doesn't
turn FLTK into drawing with Cairo.
It only enables users to draw into an Fl_Cairo_Window in a callback
rather than deriving a subclass or setting up drawing with Cairo
manually (which should be possible with the stock FLTK library w/o its
limited Cairo support as well. If that's what you want to do, that
example is applicable.
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