cmExportBuildFileGenerator: handle genex-wrapped source paths

Previously a fileset with `$<$<CONFIG:Debug>:some_file>` would show up
as-is (with escaping) in the build directory export. Instead, evaluate
all fileset entries as generator expressions and list them as they are
similar to the installation information.

1 files changed, 85 insertions, 8 deletions

diff --git a/Source/cmExportBuildFileGenerator.cxx b/Source/cmExportBuildFileGenerator.cxx
index a47f1e5..2773b3b 100644
--- a/Source/cmExportBuildFileGenerator.cxx
+++ b/Source/cmExportBuildFileGenerator.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmExportBuildFileGenerator.h"
 
+#include <algorithm>
 #include <map>
 #include <memory>
 #include <set>
@@ -15,7 +16,6 @@
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalGenerator.h"
-#include "cmListFileCache.h"
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmMessageType.h"
@@ -362,16 +362,93 @@ std::string cmExportBuildFileGenerator::InstallNameDir(
   return install_name_dir;
 }
 
+namespace {
+bool EntryIsContextSensitive(
+  const std::unique_ptr<cmCompiledGeneratorExpression>& cge)
+{
+  return cge->GetHadContextSensitiveCondition();
+}
+}
+
 std::string cmExportBuildFileGenerator::GetFileSetDirectories(
-  cmGeneratorTarget* /*gte*/, cmFileSet* fileSet, cmTargetExport* /*te*/)
+  cmGeneratorTarget* gte, cmFileSet* fileSet, cmTargetExport* /*te*/)
 {
-  return cmOutputConverter::EscapeForCMake(
-    cmJoin(fileSet->GetDirectoryEntries(), ";"));
+  std::vector<std::string> resultVector;
+
+  auto configs =
+    gte->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
+  auto directoryEntries = fileSet->CompileDirectoryEntries();
+
+  for (auto const& config : configs) {
+    auto directories = fileSet->EvaluateDirectoryEntries(
+      directoryEntries, gte->LocalGenerator, config, gte);
+
+    bool const contextSensitive =
+      std::any_of(directoryEntries.begin(), directoryEntries.end(),
+                  EntryIsContextSensitive);
+
+    for (auto const& directory : directories) {
+      auto dest = cmOutputConverter::EscapeForCMake(
+        directory, cmOutputConverter::WrapQuotes::NoWrap);
+
+      if (contextSensitive && configs.size() != 1) {
+        resultVector.push_back(
+          cmStrCat("\"$<$<CONFIG:", config, ">:", dest, ">\""));
+      } else {
+        resultVector.push_back(cmStrCat('"', dest, '"'));
+        break;
+      }
+    }
+  }
+
+  return cmJoin(resultVector, " ");
 }
 
-std::string cmExportBuildFileGenerator::GetFileSetFiles(
-  cmGeneratorTarget* /*gte*/, cmFileSet* fileSet, cmTargetExport* /*te*/)
+std::string cmExportBuildFileGenerator::GetFileSetFiles(cmGeneratorTarget* gte,
+                                                        cmFileSet* fileSet,
+                                                        cmTargetExport* /*te*/)
 {
-  return cmOutputConverter::EscapeForCMake(
-    cmJoin(fileSet->GetFileEntries(), ";"));
+  std::vector<std::string> resultVector;
+
+  auto configs =
+    gte->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
+
+  auto fileEntries = fileSet->CompileFileEntries();
+  auto directoryEntries = fileSet->CompileDirectoryEntries();
+
+  for (auto const& config : configs) {
+    auto directories = fileSet->EvaluateDirectoryEntries(
+      directoryEntries, gte->LocalGenerator, config, gte);
+
+    std::map<std::string, std::vector<std::string>> files;
+    for (auto const& entry : fileEntries) {
+      fileSet->EvaluateFileEntry(directories, files, entry,
+                                 gte->LocalGenerator, config, gte);
+    }
+
+    bool const contextSensitive =
+      std::any_of(directoryEntries.begin(), directoryEntries.end(),
+                  EntryIsContextSensitive) ||
+      std::any_of(fileEntries.begin(), fileEntries.end(),
+                  EntryIsContextSensitive);
+
+    for (auto const& it : files) {
+      for (auto const& filename : it.second) {
+        auto escapedFile = cmOutputConverter::EscapeForCMake(
+          filename, cmOutputConverter::WrapQuotes::NoWrap);
+        if (contextSensitive && configs.size() != 1) {
+          resultVector.push_back(
+            cmStrCat("\"$<$<CONFIG:", config, ">:", escapedFile, ">\""));
+        } else {
+          resultVector.push_back(cmStrCat('"', escapedFile, '"'));
+        }
+      }
+    }
+
+    if (!(contextSensitive && configs.size() != 1)) {
+      break;
+    }
+  }
+
+  return cmJoin(resultVector, " ");
 }