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For the most part, save types should now be identified during rom loading and then allow libretro to correctly use flash or eeprom save types and save size.

Fix regex that changes the command to rebuild freetype with harfbuzz for
cross building, as previous commit fixed that command.

Make mac builder use -m32 in CFLAGS etc. to produce a 32 bit binary
targetting 10.7 (Lion.) This provides the greatest backward
compatibility for older macs, and also allows for asm filters.

Fix an issue with m4 on 10.13 using a patch from macports.

Support `-pX` patch level args in DIST_PATCHES in builder.

Fix an issue with bison on 10.13 by bumping the version to 3.0.5.

Build libxslt `--without-crypto` so that it doesn't try to link the brew
libgcrypt.

Invoke cmake for dists with -DCMAKE_C_COMPILER_LAUNCHER=ccache and
-DCMAKE_CXX_COMPILER_LAUNCHER=ccache to use ccache, and set
CMAKE_C_COMPILER and CMAKE_CXX_COMPILER to the actual compilers not
prefixed by ccache.

When checking for ccache in vbam cmake code, check that
CMAKE_CXX_COMPILER_LAUNCHER and CMAKE_C_COMPILER_LAUNCHER were not
already defined (generally on the command line.)

Remove align attributes from sections in 2xSaImmx.asm, macho format on
mac does not support this and the filter works fine without them.

In the Quartz2D renderer, pass the NSRect view.bounds through
NSRectToCGRect when calling CGContextDrawImage(), this is necessary for
the 32 bit API.

Bump openssl to 1.0.2o.

Bump libxml2 to 2.9.8.

Update URL for urw fonts, and improve the dist downloading/unpacking
code to handle URLs that do not contain the filename (for .tar.gz and
.zip as identified by `file`.)

Change post-build for harfbuzz from `rebuild_dist freetype;` to
`rebuild_dist freetype --with-harfbuzz=yes;` as it was supposed to have
been.

Build cmake itself with --parallel and --enable-ccache.

Silence errors from killed jobs due to tmp directory being gone.

Write a couple of string functions, rtrim() and gsub().

Make path_exists() handle globs with spaces in them, by escaping the
space.

Use --host and --build args to autoconf configure to "cross-compile" for
32 bits, this is necessary for some dists, and does not work for others,
remove it for dists where it does not work.

Add COMMAND_MODE=unix2003 to the build environment, this is necessary to
fix some build errors, why I have no clue, found it on stackoverflow.

Pass -Wl,-no_compact_unwind in LDFLAGS to openssl, this is necessary for
32 bits.

Force sfml to compile as 32 bit, it normally does not allow this.

Remove shared-mime-info from this build, it's not necessary for anything
and there are issues XML::Parser linked to our expat and brew perl that
need to be resolved.

Implement the recommendations described in issue #255 by @zzazzdzz:

- Check bounds when reading ELF program header sections.

- Skip reading ELF section headers if the string table pointer is NULL.

- Increase the buffer size for dissassembled instructions in the
  dissassembly view and pass the buffer size to the disArm() and
  disThumb() functions so that rudimentary bounds checking can be done.

Also add the constants WORK_RAM_SIZE and ROM_SIZE to reduce incidence of
magic numbers and make the code a bit cleaner.

Add a job to test compiling the libretro module to the matrix.

fix compile issue in windows

The libxslt and urw URLs were broken, replace them with working ones.

Move the `cache: directories: "$HOME/.ccache"` key from the top of the
file into each specific job, otherwise it does not seem to have an
effect as a global option.

Use a matrix of 4 jobs, linux (ubuntu trusty), mingw i686, mingw x86-64
and mac.

Automatically detect ccache in the cmake config and cache the
`~/.ccache` directory for faster rebuilds.

Instructions for ccache in cmake are here:
https://stackoverflow.com/a/24305849

Change build status badge in README.md to Travis.

Add ccache to list of deps for all platforms.

When cross building for win32, native wxrc is needed to generate xrc
files, add wx-common to mxe dependencies which provides it.

Change cmake executable prefix from `x86-64` to the correct `x86_64` for
the 64 bit architecture.

Add some dependencies for the linux build that apt errors out on,
hopefully this won't affect newer ubuntu or debian.

Do an apt-get update before trying to install mxe dependencies for win32
cross builds, or the packages cannot be found.

In MainFrame::ShowModal, which is used as a wrapper for
wxDialog::ShowModal to also pause emulation, add the current window
style flags to the additional CAPTION and RESIZE_BORDER flags being set
with SetWindowStyle(), otherwise the other style flags of the window are
reset causing erroneous behavior such as save dialogs appearing as open
dialogs on Mac.

Add a note at the top of README.md for windows users on how to find the
config directory and delete it.

Default to GetWindow()->Refresh() to draw the game area on non-GTK
platforms as well, and only use the DrawArea(dc) method in GTK2 and
lower.

When using GTK2, call DrawArea(dc) instead of GetWindow()->Refresh(),
this prevents glib from using huge amounts of CPU (as discovered by
@retro-wertz .)

Switching video drivers sometimes crashes the app, the DrawArea() call
is as safe as possible, the problem is elsewhere.

The expansion must be quoted as "$ENV{WX_CONFIG}" when passed as a
parameter e.g. to if() otherwise it expands to no parameter when empty.

Apparently in cmake empty env vars do not evaluate to false, use
explicit STREQUAL "".

Skip the check for wx-config-gtk3 if the WX_CONFIG environment variable
is set, indicating that the user wants to override the version of wx to
build against.

Use a loop to check for wx-config-gtk4 then wx-config-gtk3 and unset the
config executable variable otherwise.

Also remove gl from the initial wx libraries list.

Change installdeps to install wxgtk3 on arch instead of the wxgtk
package which uses gtk2.

Update the cmake code to check for the renamed wx-config executable
wx-config-gtk3 on arch, first checking for wx-config-gtk4 for the
future.

Compile out the min/max functions in GBALink.cpp when compiling with
clang, clang does not like them because of some sort of changes in the
preprocessor.

Run the mac builder script with homebrew bash, system bash does not work
and dash no longer works.

TODO: fix dash compat

Add couple of file ext on .gitignore

Libretro

Log should only show once during the first write to SRAM or FLASH address using flashSaveDecide()

Libretro use shaders for filters etc.