On MSVC, shared libraries only export symbols that have been explicitly exported
either as part of the symbol prototype or via a module definitions file.
On compilers other than MSVC, all symbols are exported in the shared library by
default and the format for the list of symbols to export is different, so this
is only used with the VisualStudio compiler.
The module defs file path can either be relative to the current source directory
or an absolute path using meson.source_root() + '/some/path'
backend.get_target_private_dir() includes the target directory in the path.
However, we want to treat all paths relative from the target directory,
because that's where our VS project file lives in.
A shebang line on Windows will be resolved to [binary, script_path].
Thus, we need to use both instead of just taking the first element of the
command.
Everything in the VS project file is relative to the project file itself.
The project file gets put in the target.subdir, so to include files from
there we just need to use '.'. To include from the private dir, we
need to use the relative path from the target dir to the target private
dir.
1. Dependencies must be set up with the target's id instead of its
basename.
2. Extracted object output file names must not include the directory
prefix, because MSBuild puts all object files into the same directory
and names them srcfilename.obj instead of dir/filename.obj or
dir_filename.obj.
The 'Rebuild' target fails in mysterious ways if multiple targets use
the same directories because of output files being deleted between two
build steps (e.g. test case 78 fails on Rebuild, whereas Clean + Build
work just fine).
This creates the PrecompiledHeader properties for every source file in the
project if multiple languages are present. Otherwise, the global pch
settings are used.
The pch to use is determined by checking the suffix of the source file.
This makes the following changes:
* Explicitly closes the file for force flushing (this fixes an issue on which the last 2 or 3 lines weren't being written to disk)
* Adds another check on the PBXBuildFile stage to get the file name if the returned source type is a File instead of a string
Fixes issue #337
Jussi Pakkanen
Hemmo Nieminen
Nirbheek Chauhan
Nicolas Schneider
Rogiel Sulzbach