commit 1d21dc7a38180d0e0257c5419762694c9975367e
Author:     Albrecht Schlosser <albrechts.fltk@online.de>
AuthorDate: Fri Sep 18 17:07:27 2020 +0200
Commit:     Albrecht Schlosser <albrechts.fltk@online.de>
CommitDate: Fri Sep 18 17:07:27 2020 +0200

    Fix doxygen warnings for newer doxygen versions
    
    Paper type "a4wide" is no longer accepted (by doxygen or latex)
    for PDF generation, the other settings have been obsoleted by
    doxygen 1.8.16.
    
    Commented out for now to keep backwards compatibility with doxygen
    versions 1.8.15 and earlier.

 documentation/Doxyfile.in | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git documentation/Doxyfile.in documentation/Doxyfile.in
index 80c9daf..6697957 100644
--- documentation/Doxyfile.in
+++ documentation/Doxyfile.in
@@ -1007,7 +1007,7 @@ COMPACT_LATEX          = NO
 # by the printer. Possible values are: a4, a4wide, letter, legal and
 # executive. If left blank a4wide will be used.
 
-PAPER_TYPE             = a4wide
+PAPER_TYPE             = a4
 
 # The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
 # packages that should be included in the LaTeX output.
@@ -1312,7 +1312,8 @@ EXTERNAL_GROUPS        = YES
 # The PERL_PATH should be the absolute path and name of the perl script
 # interpreter (i.e. the result of `which perl').
 
-PERL_PATH              = /usr/bin/perl
+#** obsolete as of Doxygen 1.8.16 (use default for older versions)
+#** PERL_PATH              = /usr/bin/perl
 
 #---------------------------------------------------------------------------
 # Configuration options related to the dot tool
@@ -1334,7 +1335,8 @@ CLASS_DIAGRAMS         = YES
 # the mscgen tool resides. If left empty the tool is assumed to be found in the
 # default search path.
 
-MSCGEN_PATH            =
+#** obsolete as of Doxygen 1.8.16, not used by FLTK anyway
+#** MSCGEN_PATH            =
 
 # If set to YES, the inheritance and collaboration graphs will hide
 # inheritance and usage relations if the target is undocumented