We upgrade only the first listed package to upgrade for vcpkg to not
overrun the CI time limit.
Sometimes these packages are up-to-date but are listed for rebuild due
to depending on other packages that would be upgraded.
Find the first package in the upgrade list that is not up-to-date and
use that as the package to upgrade.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
vcpkg upgrade is fixed via:
f6d52648ec
Use upgrade --no-dry-run again to install the first package to upgrade.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Add the -DUPDATE_APPCAST=TRUE option to invoke the UpdateAppcast.cmake
script, which clones the github pages repo and sets the version in the
appcast.xml to the last tag, presumably made with -DTAG_RELEASE.
The script prints out a final set of instructions to actually push the
change to git.
If the option -DUPDATE_APPCAST=UNDO is used, the clone is removed and no
changes are made.
Also use the correct method of splitting the tag list output into
multiple lines.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
vcpkg upgrade is currently broken, see:
https://github.com/microsoft/vcpkg/issues/9916
Use remove followed by install, which does practically the same thing,
as a workaround.
Hopefully fix current appveyor build failures.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Search the lib-prefixed names of intl/iconv/charset libraries first to
avoid dlls being linked.
Update toolchain files to include the common source by full path, fixes
using them as toolchains for other projects broken in 3edd9ba7.
Update URL for nasm, use newer jpeg-turbo, tiff and wx.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Use the 3.x wxwidgets mingw package in installdeps.
Add the win64 alias to installdeps for 64 bit mingw builds, like the
win32 alias for 32 bit mingw builds.
Check CROSS_ARCH in Architecture.cmake, set by our mingw toolchains.
Disable LTO by default for all mingw builds, not just amd64, because it
is unfortunately broken on i686 as well now.
Search for heuristically the most appropriate wx-config and set
wxWidgets_CONFIG_EXECUTABLE accordingly in the mingw toolchains.
Refactor the mingw toolchains somewhat, put common code into a common
file, add static toolchains.
For static toolchains, also search for a static zlib and set ZLIB_ROOT.
Change installdeps instructions to use ninja instead of make. Add ninja
to all target dependencies where it was missing, this may be incorrect
in a couple of the rarely used targets, if this is the case the affected
users are free to open an issue.
Also start using ninja on travis instead of make, except for libretro
which uses a GNU Makefile.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Add macro fi_check_done() to set fi_done if leftover contents is empty,
use it in both fi_open_file() and fi_get_next_line().
This fixes the behavior when the opened file is empty and makes the code
cleaner.
Add a usage example to top comment.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Remove LDFLAGS from list of required variables for finding ffmpeg to
succeed. Both main and component LDFLAGS.
Added by f7f424ea.
This is necessary because of platforms lacking pkg-config, like vcpkg +
Visual Studio, no LDFLAGS are found.
Fixes finding ffmpeg in the vcpkg + Visual Studio configuration.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
This is a followup on 93f906e2.
Simplify the FileIterator interface by doing the eof check in
fi_get_next_line().
Add rollback instructions to final instructions message.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Add a TAG_RELEASE cmake variable which engages a cmake script to
generate a signed release commit with changelog entries from git and
signed tag.
The value can be ON/TRUE/1 or a specific next version number, or UNDO to
rollback changes just made with this script.
The script tries to make sure all the preliminaries are in the right
state to do a release, the source is a git clone, on branch master, with
a clean working tree and gpg is available.
Also add a utility script FileIterator.cmake which is an OO-like line
iterator interface for text files, used by the release commit script.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Wrap the main body of code in Set-Toolchain-vcpkg.cmake in the
vcpkg_set_toolchain() function to not pollute the global variable
namespace with helper variables.
VCPKG_ROOT and toolchain variables are set in the cache.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
In order to not overrun the appveyor time limit of one hour, limit vcpkg
port upgrades to only the first port. This way the cache will be rebuilt
gradually instead of all at once, and the job won't fail due to
overrunning the time limit.
Also do a bit of refactoring and code improvements for
Set-Toolchain-vcpkg.cmake.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Followup on e98d8931.
Set the BITS variable in Architecture.cmake even if
CMAKE_SYSTEM_PROCESSOR is not set, and it often isn't. This allows for
generating the right release zip for 32 bit MinGW builds.
When invoking zip to make the translations.zip, use `.` instead of `*`
as the argument, with the correct WORKING_DIRECTORY, so as not to rely
on shell globbing of any sort. This broke for the 32 bit MinGW cross
build.
Fix the keychain unlock command on mac, the keychain must be unlocked to
use the codesigning certificate.
Fix the translations.zip.asc signature overwrite prompt on Windows.
For the mac builder, automatically use Xcode 9 for 32 bit builds if
installed, this is necessary on 10.14 (Mojave) and later.
Add interactive-pause.cmake script to wait for the user to press enter
before continuing, invoke it before gpg commands so that waiting for the
passphrase does not time out. It will not run if ENV{CI} is set or
ENV{VBAM_NO_PAUSE} is set, this is so that later we can set up automated
builds.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Add support for setting the <component>_LDFLAGS and FFMPEG_LDFLAGS cmake
variables based on pkg-config in FindFFmpeg.cmake.
The LDFLAGS can be necessary when linking FFmpeg statically, as is the
case for the mac builder script.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Use ENV{MSYSTEM_PREFIX} instead of ENV{MSYSTEM} to check for msys2 as
that is more reliable.
Generate the translations.zip when building for Windows from the
generated .gmo files.
Add the UPSTREAM_RELEASE option to perform some additional release
automation steps:
- Codesign for Windows with either the Visual Studio signtool or
osslsigncode when using MinGW.
- On Windows zip up the .exe into the appropriate zip file for release.
- Generate the gpg signature .asc files for the translations zip and the
.exe zip on Windows.
- On Mac codesign the app, zip it and sign the zip.
- On all platforms try to strip the binary.
Remove the release automation steps from the builder script as they are
now in cmake.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Only check for ffmpeg if it's not explicitly turned off and the target
is not 32 bit Windows.
This is done because Windows XP does not have bcrypt.dll which ffmpeg
requires and the 32 bit builds are more likely to be used on older
systems which would also benefit from the smaller binary size.
Also add the X86 and X64 cmake architecture variable flags.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Followup on 49ca52ba.
Improve the code that shows a fatal error if the vcpkg target
architecture does not match the build environment, by showing both the
target architecture and the build environment architecture.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Fix the vcpkg root setting, which was trying to use CMAKE_PROJECT_DIR
before a project is defined by switching back to CMAKE_SOURCE_DIR. Also
check if the user has \vcpkg or c:\vcpkg and use those if found. Use
\vcpkg if ENV{CI} is set, e.g. on Appveyor.
Enable nasm for visual studio builds by using the nuget nasm2 package.
In Architecture.cmake check that the vcpkg arch matches the compiler
arch, and throw a fatal error otherwise.
When using GLOB to find the nuget package directory, use the package
name as the prefix, this is quite necessary when using multiple nuget
packages.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Add support for vcpkg ffmpeg, this requires using someone's
FindFFmpeg.cmake instead of relying on pkg-config, since vcpkg does not
have pkg-config.
Do not use the ffmpeg from vcpkg on appveyor however, because that
pushes the build cache generation over the time limit for jobs.
Add secur32 and bcrypt to the list of ffmpeg libs on windows, these are
standard windows libraries.
Change some code in ffmpeg.cpp to remove C-style casts of struct
initializers, which are illegal in MSVC.
Add the INT64_C and UINT64_C macros missing in MSVC's stdint.h (if not
defined) to ffmpeg.h before the ffmpeg headers are included, because
they rely on them.
Rewrite the wxWidgets finding code for the vcpkg wxWidgets to be nicer
and work correctly for debug and static builds.
Remove all /W* and /w* warnings options from cmake compiler flags, and
replace them with /W4 for debug builds, and /w (no warnings) for release
modes.
When building a static binary, remove all /MD* flags from cmake compiler
flags, and use /MT for static release builds and /MTd for static debug
builds.
Improve the vcpkg toolchain wrapper to only rebuild the vcpkg binary if
there were git updates.
Redo the handling of SDL2 and SDL_main. Only link SDL2Main to the SDL
binary and don't use the definitions.
Update CMakeSettings.json to use Ninja and include static
configurations.
Use CMAKE_PROJECT_DIR instead of CMAKE_SOURCE_DIR to determine the vcpkg
root, as CMAKE_SOURCE_DIR is sometimes set incorrectly in the 2017 GUI.
Add /nodefaultlib:libcmt to the debug build link flags, as in debug
builds libcmtd is used and libcmt should not be.
Add /subsystem:console to debug build link flags to produce a windows
console app for debug builds, like we do for mingw builds. To do this,
define a WIN32_CONSOLE_APP macro and if set, define a main() that calls
WinMain().
Call wxMesdsageOutput::Set() in OnInit with an instance of
wxMessageOutputStderr for windows debug builds to make sure the --help
text etc. goes to the console instead of a popup box.
Update the Visual Studio related text in README.md.
Fix dynamic debug builds by linking to the debug version of SDL2 and
copying the debug version of the dll to the build dir.
Fix issue in MainFrame::BindAppIcon with the function we are using not
being found in a Windows DLL in debug builds by using
wxDynamicLibrary::GetSymboolAorW() instead of GetSymbol().
Enable LTO for MSVC in Release modes, if the option is set.
Change appveyor config to use an 8 item build matrix of
x64/x86 / Release/Debug / Static/Dynamic. And test the binary in debug
modes by running --help.
When copying the wxrc.exe out of the build tree, copy both the release
and debug versions, this is so that appveyor caching of vcpkg works,
since the build trees are not cached.
Add some necessary win32 libraries to the SDL binary. And enable
building it on appveyor.
Fix#465.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Only set CMAKE_GENERATOR_PLATFORM to "x64" for 64 bit toolchains for any
of the "Visual Studio" generators, which use msbuild.
For other generators such as Ninja or NMake (jom) set
CMAKE_C[XX]_COMPILER to "cl" to let cmake find the compiler in the
user's PATH and set up the toolchain appropriately. On the user's part,
all that is required is running the 64 bit dev tools command prompt, or
setting up the equivalent environment in powershell.
We are no longer restricted to msbuild, and other generators such as
Ninja will work correctly.
Switch the appveyor job to Ninja, this requires some wrangling because
the appveyor environment does not include ninja. I used this:
https://github.com/boostorg/hana/blob/master/.appveyor.yml
Also update the README.md instructions to use Ninja.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
In the vcpkg module, call vcpkg update to update the portfiles and vcpkg
upgrade to upgrade any installed ports to make sure we are using the
latest versions.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
On appveyor we only cache the `vcpkg/installed` directory, so vcpkg
itself still needs to be pulled from git.
Also update vcpkg from git if it has already been cloned, and always
rebuild vcpkg itself.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Only add the macro `-D_FORTIFY_SOURCE=2` if we are linking to libssp
with gcc, do not use it at all on clang.
For `HostCompile.cmake` add the macro `-Dmain=main` to redefine the
macro added by SDL2 to compile flags `-Dmain=SDL_main`.
Fix#548.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
See #465
To compile the build tool `bin2c`, add a target with `add_executable()`
on visual studio instead of using `HostCompile.cmake` because running
`cl.exe` fails in the appveyor visual studio environment, see:
https://developercommunity.visualstudio.com/content/problem/325122/c1356-unable-to-find-mspdbcoredll.html
Also update the dependencies module to latest.
appveyor build now tested to work.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Replace the vcpkg code with a newer and better version. In this version
the `vcpkg` directory is on the same level as the source directory, so
that IntelliSense does not get confused scanning for files.
The cmake variable `VCPKG_TARGET_TRIPLET` is required to activate vcpkg
support, it must be set to e.g. `x64-windows` or `x86-windows`.
Update `CMakeSettings.json` for the new code for the GUI.
Fix a problem copying the `SDL2.dll` file to the binary directory.
Update `README.md` with commandline instructions.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Make some changes to support out-of-the-box builds on FreeBSD:
- set cmake OpenGL type to `LEGACY`, the new `GLVND` type produces
unusable binaries on FreeBSD
- on FreeBSD add -I/usr/local/include to compiler flags, why this is
necessary I don't know
- look for llvm tools such as `llvm-ar` in `/usr/local/llvm-devel/bin`,
LTO works
- improve the `find_wx_util()` cmake function to handle `wx-config`
scripts named in the form e.g. `wxgtk3u-3.1-config`
- add FreeBSD support to `installdeps`
- make some minor changes to included headers based on macros such as
`__FreeBSD__` to compile on FreeBSD, including adding a `BSD.h` header
with some defines for e.g. `fseeko64`
- move the cmake X11 detection to before the wx compile tests, because
otherwise the extra compile flags for the wx tests make the X11 tests
fail
- make some minor changes to fix wx 2.8 compatibilty again, we don't
actually use 2.8 for FreeBSD but I was testing it
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
In 2097b5aa I added a function that is used both in the non-vcpkg block
and outside of it, but the function was defined in the non-vcpkg block,
and this broke the visual studio build.
Move functions and macros into an include file so that they are globally
available.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
In a construct such as:
```cmake
if($ENV{FOO} MATCHES bar)
...
endif()
```
if the environment variable is not set, the if statement becomes a
syntax error because there is nothing being compared.
Fix this by quoting the environment variable like so:
```cmake
if("$ENV{FOO}" MATCHES bar)
...
endif()
```
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Use vcpkg to build deps when Visual Studio on Windows is detected, this
only happens on first build, but does take a while because things like
wxWidgets need to be built. Building from the developer command line is
also supported.
I considered making a pre-built tarball available, but the resulting
files are just too big for this to be practical.
Make the necessary cmake code changes for this to work and to use the
vcpkg packages, which work just like on linux or have other cmake glue
code available.
To do this, we make vcpkg a submodule, use git to checkout all
submodules, then just build and use the `vcpkg.exe`. Then we set the
CMAKE_TOOLCHAIN_FILE to the vcpkg toolchain and also include it
directly, why this is necessary I don't know, without it it doesn't work
in the IDE but does on the command line.
All of this requires no vcpkg integration with either the user or the
project. A user-wide `ENV{VCPKG_ROOT}` is also supported.
Fix the dynamic arrays in the GBA core, MSVC follows the C++ standard on
this and gcc does not.
TODO: add the necessary gcc flags to make this an error in cmake.
Use `wxArrayString` instead of `std::vector<wxString>` in
`src/wx/strutils.cpp` which is used in options parsing. This was
necessary because of a bizarre linker error with wxWidgets when using
Visual Studio:
https://trac.wxwidgets.org/ticket/10884#comment:46
In `src/wx/panel.cpp` make sure the unimplemented D3D renderer code does
not get compiled if it's actually `OFF`.
Also fix the new spacer code for the drawing panel to not combine
`wxEXPAND` with `wxALIGN_CENTER`, which is an error on wxWidgets 3.1.2,
which is what vcpkg uses. The drawing panel seems to be automatically
stretched to the max size automatically anyway.
TODO: if all of this works, we'll need an Appveyor set up for visual
studio.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Use `clang -print-prog-path=<tool>` to find the locations of llvm
toolchain utilities such as `llvm-ranlib` and set the appropriate cmake
variables to the resultant paths.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Generalize regex and glob against `wx/config` scripts in
`Toolchain-cross-m32.cmake` to work on gentoo, which can append the
`-gtk3` suffix.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
For some reason on Ubuntu 14 (trusty) cmake translates `<INCLUDES>` in
`CMAKE_ASM_NASM_COMPILE_OBJECT` as a literal `INCLUDES` which produces
an error, remove it because we are not using it anyway.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
Support the gentoo crossdev mingw environment for the mingw cross
builder:
- For the cmake toolchains, add /usr/<arch>/usr to root paths, as this
is the mingw root for crossdev.
- -Wno-error=all no longer works with gcc 8.2, instead remove all
-Werror flags in dist_post_configure().
- Also remove all -I/usr/include flags in dist_post_configure().
- Don't prepend ROOT/host/bin to the PATH globally, only in
set_host_env(). This way the target config scripts are correctly found
in PATH.
- Bump openssl 1.0.2o -> 1.0.2p, cmake 3.10.3 -> 3.13.0-rc1, gd 2.2.4 ->
2.2.5 and glib 2.57.2 -> 2.58.1.
- Add libicu unicode handling library, needed by some deps. Put into the
list of dists that must be built for both the host and the target. Use
a whole bunch of patches from MSys2 for it.
- Make openssl build in parallel by using a sed script to prepend a + to
the appropriate make rules.
- Replace fontconfig EXTRA_LIBS with MAKE_ARGS: LIBS="-lintl -liconv"
because these libs were being stripped out from LIBS and LDFLAGS.
- Add V=1 VERBOSE=1 to all make invocations for extra verbosity (to see
compile/link invocations.)
- As a consequence, use dist_ninja_args() for ninja, it will still take
options in DIST_MAKE_ARGS.
- Add CONFIGURE_TYPE "cmakeninja" which is like the "cmake" type except
with -G Ninja to use the ninja generator and built with ninja. Nothing
uses this yet.
- Fix dist_patch() output for already applied patches.
- Add -L/usr/<arch>/usr/lib64 to CFLAGS/CXXFLAGS/OBJCXXFLAGS/LDFLAGS,
because crossdev libpthreads.a is in that directory and it's not in
gcc search paths. It cannot go into CPPFLAGS because those are used
for windres invocations, and windres errors out with non-cpp flags.
- Add -DMINGW_HAS_SECURE_API to all flags to fix a problem with the
mingw headers in crossdev.
- Add -lpthread to a default LIBS env var so that it's often linked last
against any libraries that may need it, at least for autoconf.
- Set the PKG_CONFIG env var to the path of the built pkg-config binary,
not exactly sure why this was necessary.
- Overhaul environment variable saving/restoring for set_host_env() so
that more variables are covered and have good host defaults.
- Add the dlfcn-win32 for mingw for dependencies that need -ldl.
- Add some MSys2 patches for fontconfig.
- Use a sed script to fix the native tools compilation when cross
compiling openal.
- Replace the fedora glib patches for mingw with MSys2 ones for the
newer glib.
- Add --with-threads=posix --disable-libelf to glib DIST_ARGS.
Update the po files with the transifex client and do a msgmerge.
Replace cmake/FindGettext.cmake with the current version, and fix a bug
in it that would not allow files with multiple periods such as
zh_TW.Big5.po. Also disable msgmerge in GETTEXT_CREATE_TRANSLATIONS
otherwise it would create too many very spammy commits.
Replace language list in po/wxvbam/CMakeLists.txt (where the .pot and
.po files are) with a list made with file(GLOB ...), so that all the new
languages are pulled in.
- Add the cross root from the mingw-w64 mac brew to the cmake toolchain
files.
- Remove strerror_r/strerror_s from ConfigManager.cpp because the
mingw-w64 brew does not support strerror_s for some reason.
- Strip the vbam executable from the builder script in the build_project
phase.
- Change the bzip2 URL to the github mirror because the bzip.org domain
expired.
- Add libuuid as it's required by the new fontconfig, use the mingw
version for mingw builds, for mingw also set UUID_LIBS to
'-luuid_mingw -luuid' in mingw.sh for fontconfig, the mingw version
is called uuid_mingw because uuid is a core win32 library.
- Lower glib version to 2.57.2 stable.
- Update wxwidgets version to current master sha.
- Fix a bug in flex-2.5.3 post_build where it tries to build flex
current but flex has been removed, and it was just rebuilding 2.5.3.
- Fix "aggressive" relocation and the relocation of .l[ao] and .pc files
in install_dist to ignore /usr/local, and only match /usr.
- Add a "project" pre_build and post_build hooks.
- Add getopt to host-only dists in mingw-cross.sh.
- Use perl instead of readlink -f to get the absolute path of the cmake
toolchain files in mingw-cross.sh, as readlink -f is linux-only.
- In mingw-cross.sh, replace the glib post_build to rebuild
gettext-target instead of gettext --without-included-glib.
- Add overridable functions set_host_env_hook and unset_host_env_hook in
mingw.sh to override in other scripts, in this case mac-cross-builder.
- Update mingw glib patches to current fedora versions.
- Add tools/win/mac-cross-builder script to build mingw windows binaries
on mac, it borrows some necessary parts from the mac native builder
for host dists, and inherits from mingw-cross.sh.
TODO: currently the resulting mac-built binary segfaults due to gcc
8.2.0, just as the msys2-built binary does, this is a separate issue.
Update mingw cmake toolchain files to work-around a bug in cmake where
find_program() would return the current working directory instead of the
executable path if CMAKE_C_COMPILER and related are passed on the
command line.
Fix $CC/$CC_ORIG and $CXX/$CXX_ORIG handling for the core and
mingw-cross (_ORIG is without ccache.)
under `tools/` add some scripts to invoke the build system to build all
deps for vbam and vbam itself:
- `tools/linux/builder`
This builds a mostly static linux binary with a few dynamic deps for
xorg and wayland. Using gtk3. This will run on just about any dist.
- `tools/osx/builder`
Builds a static mac app targetting 10.7.
- `tools/win/linux-cross-builder`
Builds a static windows binary using the mingw-w64 toolchain.
- `tools/win/msys2-builder`
Builds a static windows binary in the MSYS2 environment, this may be
suffering from a few regressions.
Change some cmake code to support the build system, refactor a few
things in it.
Improve, refactor and clean up `tools/osx/builder` to build a relatively
full-featured ffmpeg as well. This requires lots of other dists. It's
kind of like a mini port system now. Will generalize it shortly to a
sourced library for using with both the mac and the mingw builds. Will
hopefully become a separate repo on github at some point.
Add perl dist support to the builder.
Add an `--env` flag to the builder to print the build environment
variables so that they can be read in with `eval` for debugging
purposes.
Also add the `FFMPEG_STATIC` cmake option to link static ffmpeg
libraries correctly.
Move the codesigning and zipping of the `.app` bundle to the builder
script and out of cmake, as this is something most users don't need.
Add `tools/osx/builder`, a POSIX sh script to build all dependant
libraries as static, targetted to OS X 10.7, and build the project with
them (also targetted to OS X 10.7.)
ffmpeg currently does not link, as recording functionality is currently
non-functional anyway, this will be fixed later.
MISC:
- set WORKING_DIRECTORY and ERROR_QUIET for all git commands, for the
cases when the build directory is not under the git checkout
- #include <cerrno> in ConfigManager.cpp as it uses errno
- change `build*` in `.gitignore` to `build/*` so that files starting
with "build" are not affected
If git tags are not available, set the version and revision by finding
the first version tag in `CHANGELOG.md` of the form
```
```
Where N.N.N is the number version (number of components can vary) and
the revision (as speicified by -REV) is optional.
TODO: support named revision without a version number of the form
`[REV]`.
Run just one `git tag` command instead of two (with tags and refs) and
break it into the form [tag0, ref0, tag1, ref1, ...]. Iterate over the
list with two counters for tag and ref.
Fix `cmake/GitTagVersion.cmake` to not throw errors when in a shallow
git clone, or any git clone that has no tags.
And when either git or git tag version info is not available, set the
version variables to the defaults, which are:
```
VERSION = '2.0.0'
REVISION = 'unknown'
VERSION_RELEASE = 0
```
To get the version, find the last tag in git tag of the form "v2.0.0" or
"2.0.0". If this is the last tag and the current commit matches the ref
of this tag, the revision will be empty.
In the case that the current commit is not tagged with a version, to get
the revision, use the short sha unless the current commit is tagged with
something that is not a version string, e.g. "feature-foo", in which
case the revision will be "feature-foo".
If the current commit is tagged as e.g. "v2.0.1-foo" or "2.0.1-foo" then
the version will be "2.0.1" and the revision will be "foo". Tags of this
form are also checked when finding the current version.
This is all done in cmake. If there is no git detected, the version will
be "2.0.0" and the revision will be "unknown".
gcc lto wrapper commands such as `gcc-ar` will segfault with some
versions of gcc 7.x when called via an absolute path, see:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80717
Generalize the mechanism for compiling a small C program on the host
(currently used for bin2c for Wx resources) and use it to wrap the gcc
wrappers in a little executable that prepends their dirname to PATH and
runs them with `execvp()`.
Make LTO default to ON again, except on win32 with gcc < 7, because
those toolchains produce broken binaries with LTO enabled.
Also add `-ffat-lto-objects` to compiler flags for gcc when LTO is
enabled, this will increase the chances that the LTO build will succeed
even if there are issues with the binutils wrappers. Clang does not
support this.
Rafael Kitover