Avoid some failures from MicrosoftTools when running on Linux

Don't try to run vswhere.exe if it isn't found.  If running on WSL, map
its result to the mount location to the Windows drive.

diff --git a/plugins/msvc/microsofttools.cpp b/plugins/msvc/microsofttools.cpp
index af435bb2e85d73380343cd3f101bf61d119205e5..0370f455d34b5c6a0bae7c1720bd0fa5de922354 100644 (file)
--- a/plugins/msvc/microsofttools.cpp
+++ b/plugins/msvc/microsofttools.cpp
@@ -4,6 +4,7 @@
 #include <msp/builder/sysutils.h>
 #include <msp/core/algorithm.h>
 #include <msp/fs/dir.h>
+#include <msp/fs/stat.h>
 #include <msp/strings/utils.h>
 #include "microsofttools.h"
 #include "msvcarchiver.h"
@@ -17,7 +18,8 @@ MicrosoftTools::MicrosoftTools(Builder &builder, const Architecture &arch):
        Toolchain("msvc", get_priority(arch))
 {
        find_vc_bin_dir(builder, arch);
-       find_windows_sdk_dir(builder);
+       if(!vc_base_dir.empty())
+               find_windows_sdk_dir(builder);
 
        add_tool(new MsvcCompiler(builder, arch, "CC", *this));
        add_tool(new MsvcCompiler(builder, arch, "CXX", *this));
@@ -29,8 +31,12 @@ void MicrosoftTools::find_vc_bin_dir(Builder &builder, const Architecture &arch)
 {
        FS::Path program_files_x86 = get_program_files_x86_dir();
 
+       FS::Path vswhere = program_files_x86/"Microsoft Visual Studio"/"Installer"/"vswhere.exe";
+       if(!FS::exists(vswhere))
+               return;
+
        ExternalTask::Arguments argv;
-       argv.push_back((program_files_x86/"Microsoft Visual Studio"/"Installer"/"vswhere.exe").str());
+       argv.push_back(vswhere.str());
        argv.push_back("-latest");
        argv.push_back("-property");
        argv.push_back("installationPath");
@@ -39,6 +45,12 @@ void MicrosoftTools::find_vc_bin_dir(Builder &builder, const Architecture &arch)
 
        string output = ExternalTask::run_and_capture_output(argv, FS::Path(), true);
        FS::Path vs_path = strip(output);
+       if(!vs_path.is_absolute())
+       {
+               string drive = vs_path[1];
+               if(drive.size()==2 && drive[0]>='A' && drive[0]<='Z' && drive[1]==':')
+                       vs_path = FS::Path("/mnt")/string(1, tolower(drive[0]))/vs_path.subpath(2);
+       }
 
        builder.get_logger().log("tools", "Visual Studio found in %s", vs_path);