protected override IEnumerable <IncludeWithPrefix> GetPlatformIncludePathsWithPrefixImpl(IGenerationContext context)
{
var includes = new List <IncludeWithPrefix>();
string includePrefix = "/I";
var platformToolset = Options.GetObject <Options.Vc.General.PlatformToolset>(context.Configuration);
DevEnv devEnv = platformToolset.GetDefaultDevEnvForToolset() ?? context.DevelopmentEnvironment;
if (platformToolset.IsLLVMToolchain() && Options.GetObject <Options.Vc.LLVM.UseClangCl>(context.Configuration) == Options.Vc.LLVM.UseClangCl.Enable)
{
// when using clang-cl, mark MSVC includes, so they are properly recognized
includePrefix = "/clang:-isystem";
Options.Vc.General.PlatformToolset overridenPlatformToolset = Options.Vc.General.PlatformToolset.Default;
if (Options.WithArgOption <Options.Vc.General.PlatformToolset> .Get <Options.Clang.Compiler.LLVMVcPlatformToolset>(context.Configuration, ref overridenPlatformToolset))
{
platformToolset = overridenPlatformToolset;
devEnv = platformToolset.GetDefaultDevEnvForToolset() ?? context.DevelopmentEnvironment;
}
string clangIncludePath = platformToolset == Options.Vc.General.PlatformToolset.ClangCL ? ClangForWindows.GetWindowsClangIncludePath(devEnv) : ClangForWindows.GetWindowsClangIncludePath();
includes.Add(new IncludeWithPrefix(includePrefix, clangIncludePath));
}
else
{
// this option is mandatory when using /external:I with msvc, so if the user has selected it
// we consider that the vcxproj supports ExternalIncludePath
if (Options.HasOption <Options.Vc.General.ExternalWarningLevel>(context.Configuration))
{
includePrefix = "/external:I";
}
}
IEnumerable <string> msvcIncludePaths = EnumerateSemiColonSeparatedString(devEnv.GetWindowsIncludePath());
includes.AddRange(msvcIncludePaths.Select(path => new IncludeWithPrefix(includePrefix, path)));
// Additional system includes
OrderableStrings SystemIncludes = new OrderableStrings(context.Configuration.DependenciesIncludeSystemPaths);
SystemIncludes.AddRange(context.Configuration.IncludeSystemPaths);
if (SystemIncludes.Count > 0)
{
SystemIncludes.Sort();
includes.AddRange(SystemIncludes.Select(path => new IncludeWithPrefix(includePrefix, path)));
}
return(includes);
}