doxygen build (current git version) fails "suddenly" (bison problem)

Hi,

just a small remark: I tried to compile the current git version of doxygen 
under Linux (openSUSE Leap 42.3) and got "suddenly" (before it works many 
times without any problems) the following error:

  [ 23%] Building CXX object vhdlparser/CMakeFiles/vhdlparser.dir/VhdlParserIF.cpp.o
  [ 24%] Linking CXX static library ../lib/libvhdlparser.a
  [ 24%] Built target vhdlparser
  [ 24%] [BISON][constexp] Building parser with bison 2.7
  /usr/bin/bison: invalid argument ‘deprecated’ for ‘--warnings’
  Valid arguments are:
    - ‘none            - no warnings’
    - ‘midrule-values  - unset or unused midrule values’
    - ‘yacc            - incompatibilities with POSIX Yacc’
    - ‘conflicts-sr    - S/R conflicts’
    - ‘conflicts-rr    - R/R conflicts’
    - ‘other           - all other warnings’
    - ‘all             - all of the above’
    - ‘error           - warnings are errors’
  src/CMakeFiles/_doxygen.dir/build.make:303: recipe for target 'generated_src/ce_parse.cpp' failed

I don't have clue about "cmake" but that problem may eventually be caused 
by a recent change in src/CMakeLists.txt:

  66c66
  <     COMMAND ${BISON_EXECUTABLE} -l -d -p ce_parsexpYY
  ${CMAKE_SOURCE_DIR}/src/constexp.y -o ce_parse.c
  ---
  >     COMMAND ${BISON_EXECUTABLE} -l -d -p ce_parsexpYY -Wno-deprecated
  ${CMAKE_SOURCE_DIR}/src/constexp.y -o ce_parse.c
  122c122
  < BISON_TARGET(constexp      constexp.y
  ${GENERATED_SRC}/ce_parse.cpp       COMPILE_FLAGS "${YACC_FLAGS}")
  ---
  > BISON_TARGET(constexp      constexp.y
  ${GENERATED_SRC}/ce_parse.cpp       COMPILE_FLAGS "-Wno-deprecated
  ${YACC_FLAGS}")

So just for testing I replaced that file with the old one (9718 bytes,
Aug 21 11:59) and the build process runs well.

Maybe the version of the used "bison" program (2.7) is too old
(current version is 3.0.4).

Regards

Jens


-- 
Dr. Jens Schleusener
Schillerstr. 49
D-37083 Göttingen
[email protected]

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