fixes for Debian 9

- search for libdwarf.h in new locations (e.g., /usr/include/libdwarf/)
- build Bochs with -std=gnu++98 (gnu++14 is default since GCC 6.1)
- specify "proto2" syntax for protobuf messages
- minor build-system and C++ namespace fixes

Change-Id: I16dbc622c797ef8e936fe3c0fb9b03029d27529d

cmake/FindLibDwarf.cmake

@@ -18,12 +18,16 @@ endif (LIBDWARF_LIBRARIES AND LIBDWARF_INCLUDE_DIRS)
 
 find_path (DWARF_INCLUDE_DIR
     NAMES
-      dwarf.h
+      libdwarf.h
     PATHS
       /usr/include
+      /usr/include/libdwarf
       /usr/local/include
+      /usr/local/include/libdwarf
       /opt/local/include
+      /opt/local/include/libdwarf
       /sw/include
+      /sw/include/libdwarf
       ENV CPATH) # PATH and INCLUDE will also work
 #find_path (LIBDW_INCLUDE_DIR
 #    NAMES

cmake/bochs.cmake

@@ -79,7 +79,7 @@ if(BUILD_BOCHS)
   set(bochs_configure_params --enable-a20-pin --enable-x86-64 --enable-cpu-level=6 --enable-ne2000 --enable-acpi --enable-pci --enable-usb --enable-trace-cache --enable-fast-function-calls --enable-host-specific-asms --enable-disasm --enable-readline --enable-clgd54xx --enable-fpu --enable-vmx=2 --enable-monitor-mwait --enable-cdrom --enable-sb16=linux --enable-gdb-stub --disable-docbook --with-nogui --with-x11 --with-wx --with-sdl CACHE STRING "Bochs configure parameters")
 
   ## Bochs CXX args for calling make
-  set(bochs_build_CXX CXX=${AGXX}\ -p\ ${PROJECT_SOURCE_DIR}/src\ -p\ ${PROJECT_SOURCE_DIR}/simulators\ -p\ ${PROJECT_SOURCE_DIR}/debuggers\ -p\ ${PROJECT_SOURCE_DIR}/tools\ -p\ ${PROJECT_BINARY_DIR}/src\ -I${PROJECT_SOURCE_DIR}/src/core\ -I${CMAKE_BINARY_DIR}/src/core\ ${CMAKE_AGPP_FLAGS}\ --Xcompiler)
+  set(bochs_build_CXX CXX=${AGXX}\ -p\ ${PROJECT_SOURCE_DIR}/src\ -p\ ${PROJECT_SOURCE_DIR}/simulators\ -p\ ${PROJECT_SOURCE_DIR}/debuggers\ -p\ ${PROJECT_SOURCE_DIR}/tools\ -p\ ${PROJECT_BINARY_DIR}/src\ -I${PROJECT_SOURCE_DIR}/src/core\ -I${CMAKE_BINARY_DIR}/src/core\ ${CMAKE_AGPP_FLAGS}\ --Xcompiler\ -std=gnu++98)
   ## Bochs libtool command.
   set(bochs_build_LIBTOOL LIBTOOL=/bin/sh\ ./libtool\ --tag=CXX)
 

cmake/doxygen.cmake

@@ -1,5 +1,6 @@
 
 ### Setup doxygen documentation 
+include(CMakeParseArguments) # work around internal FindDoxygen bug
 find_package(Doxygen)
 if(DOXYGEN_FOUND)
 # Using a .in file means we can use CMake to insert project settings