Re: [PATCH 1/1] config/{Makefile.SH,get_fltk}: include fltk's CXXFLAGS

On Tue, Aug 01, 2023 at 03:35:31PM -0400, Michael Orlitzky wrote:
> To test for fltk, pari compiles a test program using the output from
> "fltk-config --ldflags". That provides the necessary -l and -L flags,
> but if fltk's headers are in a nonstandard location, then the
> corresponding -I flags will be absent. This can cause a compilation
> failure (and thus feature misdetection) on e.g. Gentoo, where fltk's
> headers are stored in /usr/include/fltk rather than /usr/include.
> To fix the problem, this commit includes the output from "fltk-config
> --cxxflags" in the compilation command.
> 
> The same issue arises when compiling pari (plotfltk.c) itself, and the
> same fix applied to PLOTCFLAGS in Makefile.SH solves it.
> 
> This issue was originally debugged and fixed by François Bissey.

Thanks for your patch.

I think you also need this hunk:

diff --git a/config/get_graphic_lib b/config/get_graphic_lib
index 5e72fbf989..b685c13c58 100644
--- a/config/get_graphic_lib
+++ b/config/get_graphic_lib
@@ -3,7 +3,7 @@ if test "$optimization" = profiling; then
 fi

 _graphic_list="which_graphic_lib X11 X11_INC X11_LIBS \
-FLTK_LIBS QTDIR QTLIB gp_mime_open"
+FLTK_CXXFLAGS FLTK_LIBS QTDIR QTLIB gp_mime_open"

 if test -n "$with_fltk"; then which_graphic_lib=fltk; fi
 if test -n "$with_qt";   then which_graphic_lib=Qt; fi


I have commited the combination as GIT commit
9d84c29705119000fef53d50cbc681c00473a4b1
I hope this fixes your issues.

Cheers,
Bill