The test system is Slackware 14.2, which uses Qt 4.8.7.
* WANT_WIN_QT4 is defined, and has the expected meaning. Qt 5 is still
the default.
* The QT_NO_SOUND macro now excludes all headers and declarations
relating to sound; the multimedia package is not needed to build
(on any Qt 4, 5 or 6).
* A new function, nh_qsprintf, replaces QString::asprintf, for Qt
older than 5.5. These versions do not have QString::asprintf.
* DYNAMIC_STATUSLINES is disabled for Qt older than 5.9. These versions
do not have QSplitter::replaceWidget.
1. remove all window interface bits from compiler.370, and have
the preceding include files set some variables to control
the behavior of compiler.370 when it comes to c++.
2. some more common Makefile lines into sys/unix/hints/include/multiw-3.370.
3. make it so you can pass cppregex=1 on the Make command line to build with
sys/share/cppregex.cpp instead of posixregex.c
4. fix sys/share/cppregex.cpp so that it will build with clang compiler
(required an additional header include). I don't know if it would have
worked with g++ without that change. The include can be placed into an #ifdef
block if there's an issue with the change on other compilers.
5. Anything that needs to compile using c++ (Qt, sys/share/cppregex.cpp) can
just ensure that CPLUSPLUS_NEEDED Makefile variable is set above the lines
in compiler.370 to ensure that things get set up for c++. It no longer
checks specifically for Qt. That is what sys/unix/hints/include/multiw-2.370
does now.
Change the handling for windowing system specific files so that
when building for more than one set, each gets compiled as a set
instead of some being interspersed among rival window systems.
Put differently, handle tile.o specially so that there's no need
for the hints to sort the WINOBJ list in order to avoid tile.o
duplication.
So the order of compilation is
common source files
unix-specific files
tty files
curses files
X11 files
Qt files
tile.c (if applicable), version.c, date.c
Previously, some of the X11 files were scattered around among the
others because of the spelling of their file names.
Only matters if you're watching the progress of a build.
move out-of-date hints files to the outdated folder.
rename the hints files, and hints/include files that are currently
named *.2020 to *.370 (next release number).
