We need this option to make snapshot/nightly builds compatible with
older distros and runtimes (which might not provide libpng 1.6 by
default). Examples are: Ubuntu 16.04 LTS (and derived distros, such as
LTS Mint) or e.g. Steam Runtime.
In the current code, we assess the --disable-opus-cdda argument,
and if it's not present we run pkg-config to get the Opus CFLAGS
and LIBS. If it finds them, it sets the OPUSFILE_CFLAGS and
OPUSFILE_LIBS variables. We finally check for the presense of
one of these before actually enabling Opus.
However, if the user directly sets OPUSFILE_LIBS, then this final
check will become true regardless if the user passed --disable-opus-cdda
to configure.
The obvious fix is to move the final Opus check inside the
prior checks (for example, moving AM_CONDITIONAL(USE_OPUS) inside
AS_IF(..), however that results in the OPUS_USE conditional not
existing if the AS_IF test fails its check.
Therefore, we set a new variable HAVE_OPUS, if the pkg-config
check passes, and look for that instead of OPUSFILE_LIBS.
(Of course, the user could export HAVE_OPUS=yes in their
environment as well, but at that point they're deliberately
circumenting configure, in which case they can have at it!).
The new output type `texturepp' was added, which implements
pixel-perfect scaling using SDL's hardware-accelerated texture output.
In pixel-pefect mode, each original pixel is displayed as a rectangle m
by n pixels, so that m:n yields a reasonably good approximation of the
pixel aspect ratio (PAR) of the emulated graphical mode while using as
much screen space as possible. The balance between the precision of
aspect ratio and the utilisation of screen space is specified as the
`parweight' parameter to pp_getscale() and is currently hard-coded in
sdlmain.cpp.
This implementation emulatates pixel-perfect mode as a special case of
nearest-neighbor interpolation when the horisontal and vertical scaling
factors are integers.
Pass --disable-network to disable modem and ipx features during
configuration step (and avoid linking SDL2_net without actually removing
it from the system).
Most MinGW versions work correctly with and without _POSIX_C_SOURCE
or XOPEN macros [1] and don't need any special handling, but some
installations refuse to work correctly.
To be more precise: *some* MinGW installations turn off POSIX support
after turning on -std=c++11 WITHOUT -ansi -Wpedantic, -pedantic-errors
and similar. This behaviour is inconsistent between various Windows
versions and MinGW distributions and manifests itself only when using
GCC (Clang behaves correctly).
[1] https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
Adds a `--disable-opus-cdda` flag that explicitly disables support
for Ogg Opus CDDA tracks and in turn avoid the need for the Opus package
dependencies such as the opusfile, opus, and ogg libraries.
This feature does not alter the default operation of ./configure, which
is to enable Opus CDDA support and quit if the Opus dependency package,
opusfile, is not found. The user can then choose to either a) install
the package or b) explicitly disable Opus support.
This commit also includes:
- fixes for a double-free in the MP3 close routine that
was discovered during testing
- a message if a CD audio track cannot be added during CDROM
mounting (such as attempting to use Opus tracks when the binary
does not support them).
- the --disable-opus-cdda flag in our config heavy workflow
Users, who try to compile keep tripping over it, despite documentation
in the INSTALL file. Also, autoconf-archive might be hard to install
for users, who opted not to use MSYS2 and stick to MinGW only.
This commit bundles macros:
AX_CXX_COMPILE_STDCXX (version/serial 10)
AX_CXX_COMPILE_STDCXX_11 (version/serial 18)
This fixes the prior logic that relies on the (*)curses library
and header existing in compiler-derived default locations
such as /usr/include, and /usr/lib. However, if the package manager
happens to not install them there, then they will not be found
and the check will fail.
Four scenarios:
1. `./configure` or `./configure --enable-debug=no` produce:
(no mention of debugger; configure continues)
2. `./configure --enable-debug=wrong` produces:
configure: error: --enable-debug=wrong was requested but the value "wrong" is invalid
(terminates with exit code 1)
3. `./configure --enable-debug` produces:
config.h:
defines C_DEBUG 1
With only ncurses library installed:
configure: debugger was requested, finding curses library ...
checking for NCURSES... yes
configure: debugger enabled using the ncurses library
Makefile:
CPPFLAGS = ... -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 -I/usr/local/ncurses ...
LIBS = ... -L/usr/local/ncurses -lncurses -ltinfo ...
With only ncursesw installed:
configure: debugger was requested, finding curses library ...
checking for NCURSES... no
checking for NCURSESW... yes
configure: debugger enabled using the ncursesw library
Makefile:
CPPFLAGS = ... -I/opt/ncursesw ...
LIBS = ... -L/opt/ncursesw -lncursesw ...
With only pdcurses isntalled:
configure: debugger was requested, finding curses library ...
checking for NCURSES... no
checking for NCURSESW... no
checking for PDCURSES... yes
configure: debugger enabled using the pdcurses library
Makefile:
CPPFLAGS = ... -I/usr/local/pdcurses ...
LIBS = ... -L/usr/local/pdcurses -lpdcurses -ltinfo ...
Without any curses library installed:
configure: debugger was requested, finding curses library ...
checking for NCURSES... no
checking for NCURSESW... no
checking for PDCURSES... no
configure: error: Package requirements were not met:
<pkg-info prints info about missing package>
(terminates with exit code 1)
4. `./configure --enable-debug=heavy` produces same as above, but:
config.h:
defines C_DEBUG 1
defines C_HEAVY_DEBUG 1
The configure message mentions heavy, for example:
configure: debugger was requested, finding curses library ...
checking for NCURSES... yes
configure: debugger with heavy debugging enabled using the ncurses library
Cleanup before replacing SDL1.2 with SDL2.
OS/2 support was introduced in DOSBox in March 2006. OS/2 reached EOL
in December 2006.
As of 2019, OS/2 is being continued by proprietary 32-bit only ArcaOS,
although there is no official SDL2 support, despite pledges from SDL2
maintainers.
Name 'visualc_net' invokes old names for Visual Studio
(Visual Studio .NET 2002 or 2003), which has no relation to content of
this subdirectory.
Also, by renaming this directory we mitigate chance, that during
merge-in from svn/trunk git will automatically inject some values from
from upstream, incompatible version of solution files. By sheer
luck this might happen without causing a conflict. Never happened so
far, but there's no point in risking it.
Autoconf enforces these files only for GNU projects. ATM these files are
out of date and might be misleading to the users.
As long as we'll not place files with the same names in this repo, git
will automatically update moved files when new commits from SVN will be
merged in.
For releases, it would probably be the best to write our own NEWS.md
file and generate CHANGES.md file out of git log.
Issue reported by Dagar and Pr3tty F1y, and confirmed as a bug by ripsaw8080.
Thank you!
This fixes the GoG release of Betrayal at Krondor which (either due to CD mastering
issues or a faulty rip), requests playback of a given track at the tail end
of the prior track.
In debugging and performing this fix, many debug messages were improved as well
as making some small small code adjustments, such as using iterators to point to
individual tracks (track->attribute) instead of using the tracks array
(tracks[track -1].attribute).
Otherwise compilation fails on GCC 5.4 in Steam Runtime environment.
As of 2019, all up-to-date compilers support C++11, most of them
use C++14 as default standard, but C++14 is not fully supported by
autoconf in Ubuntu 16.04 LTS.
Full C++11 support was introduced in GCC 4.8.1 and Clang 3.3.
