cmSystemTools: Teach RunSingleCommand to separate stdout and stderr

Extend the RunSingleCommand signature to capture stdout and stderr
separately.  Allow both to be captured to the same std::string
to preserve existing behavior.  Update all call sites to do this
so that this refactoring does not introduce functional changes.

1 files changed, 4 insertions, 2 deletions

diff --git a/Source/CPack/IFW/cmCPackIFWGenerator.cxx b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
index 7f06e2d..0439ff6 100644
--- a/Source/CPack/IFW/cmCPackIFWGenerator.cxx
+++ b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
@@ -92,7 +92,8 @@ int cmCPackIFWGenerator::PackageFiles()
     cmCPackLogger(cmCPackLog::LOG_OUTPUT,
                   "- Generate repository" << std::endl);
     bool res = cmSystemTools::RunSingleCommand(
-      ifwCmd.c_str(), &output, &retVal, 0, this->GeneratorVerbose, 0);
+      ifwCmd.c_str(), &output, &output,
+      &retVal, 0, this->GeneratorVerbose, 0);
     if ( !res || retVal )
       {
       cmGeneratedFileStream ofs(ifwTmpFile.c_str());
@@ -176,7 +177,8 @@ int cmCPackIFWGenerator::PackageFiles()
   int retVal = 1;
   cmCPackLogger(cmCPackLog::LOG_OUTPUT, "- Generate package" << std::endl);
   bool res = cmSystemTools::RunSingleCommand(
-    ifwCmd.c_str(), &output, &retVal, 0, this->GeneratorVerbose, 0);
+    ifwCmd.c_str(), &output, &output,
+    &retVal, 0, this->GeneratorVerbose, 0);
   if ( !res || retVal )
     {
     cmGeneratedFileStream ofs(ifwTmpFile.c_str());