Function FindInstallSource

Source/cmInstallFilesCommand.cxx:137–160

* Find a file in the build or source tree for installation given a * relative path from the CMakeLists.txt file. This will favor files * present in the build tree. If a full path is given, it is just * returned. */

 * returned.
 */
static std::string FindInstallSource(cmMakefile& makefile, char const* name)
{
  if (cmSystemTools::FileIsFullPath(name) ||
      cmGeneratorExpression::Find(name) == 0) {
    // This is a full path.
    return name;
  }

  // This is a relative path.
  std::string tb = cmStrCat(makefile.GetCurrentBinaryDirectory(), '/', name);
  std::string ts = cmStrCat(makefile.GetCurrentSourceDirectory(), '/', name);

  if (cmSystemTools::FileExists(tb)) {
    // The file exists in the binary tree.  Use it.
    return tb;
  }
  if (cmSystemTools::FileExists(ts)) {
    // The file exists in the source tree.  Use it.
    return ts;
  }
  // The file doesn't exist.  Assume it will be present in the
  // binary tree when the install occurs.
  return tb;
}