ISPC: Support ISPC header generation byproducts and parallel builds

1 files changed, 42 insertions, 0 deletions

diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 2ef202d..9a87e18 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -680,6 +680,9 @@ void cmGlobalNinjaGenerator::CheckNinjaFeatures()
   this->NinjaSupportsRestatTool = !cmSystemTools::VersionCompare(
     cmSystemTools::OP_LESS, this->NinjaVersion.c_str(),
     RequiredNinjaVersionForRestatTool().c_str());
+  this->NinjaSupportsMultipleOutputs = !cmSystemTools::VersionCompare(
+    cmSystemTools::OP_LESS, this->NinjaVersion.c_str(),
+    RequiredNinjaVersionForMultipleOutputs().c_str());
 }
 
 bool cmGlobalNinjaGenerator::CheckLanguages(
@@ -688,6 +691,9 @@ bool cmGlobalNinjaGenerator::CheckLanguages(
   if (cm::contains(languages, "Fortran")) {
     return this->CheckFortran(mf);
   }
+  if (cm::contains(languages, "ISPC")) {
+    return this->CheckISPC(mf);
+  }
   if (cm::contains(languages, "Swift")) {
     const std::string architectures =
       mf->GetSafeDefinition("CMAKE_OSX_ARCHITECTURES");
@@ -721,6 +727,25 @@ bool cmGlobalNinjaGenerator::CheckFortran(cmMakefile* mf) const
   return false;
 }
 
+bool cmGlobalNinjaGenerator::CheckISPC(cmMakefile* mf) const
+{
+  if (this->NinjaSupportsMultipleOutputs) {
+    return true;
+  }
+
+  std::ostringstream e;
+  /* clang-format off */
+  e <<
+    "The Ninja generator does not support ISPC using Ninja version\n"
+    "  " << this->NinjaVersion << "\n"
+    "due to lack of required features.  Ninja 1.10 or higher is required."
+    ;
+  /* clang-format on */
+  mf->IssueMessage(MessageType::FATAL_ERROR, e.str());
+  cmSystemTools::SetFatalErrorOccured();
+  return false;
+}
+
 void cmGlobalNinjaGenerator::EnableLanguage(
   std::vector<std::string> const& langs, cmMakefile* mf, bool optional)
 {
@@ -1127,6 +1152,21 @@ void cmGlobalNinjaGenerator::AppendTargetDepends(
     }
   } else {
     cmNinjaDeps outs;
+
+    auto computeISPCOuputs = [](cmGlobalNinjaGenerator* gg,
+                                cmGeneratorTarget const* depTarget,
+                                cmNinjaDeps& outputDeps,
+                                const std::string& targetConfig) {
+      if (depTarget->CanCompileSources()) {
+        auto headers = depTarget->GetGeneratedISPCHeaders(targetConfig);
+        if (!headers.empty()) {
+          std::transform(headers.begin(), headers.end(), headers.begin(),
+                         gg->MapToNinjaPath());
+          outputDeps.insert(outputDeps.end(), headers.begin(), headers.end());
+        }
+      }
+    };
+
     for (cmTargetDepend const& targetDep :
          this->GetTargetDirectDepends(target)) {
       if (!targetDep->IsInBuildSystem()) {
@@ -1134,8 +1174,10 @@ void cmGlobalNinjaGenerator::AppendTargetDepends(
       }
       if (targetDep.IsCross()) {
         this->AppendTargetOutputs(targetDep, outs, fileConfig, depends);
+        computeISPCOuputs(this, targetDep, outs, fileConfig);
       } else {
         this->AppendTargetOutputs(targetDep, outs, config, depends);
+        computeISPCOuputs(this, targetDep, outs, config);
       }
     }
     std::sort(outs.begin(), outs.end());