file: Add GET_RUNTIME_DEPENDENCIES mode

Co-Authored-by: Bryon Bean <bryon.bean@kitware.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/Source/cmLDConfigLDConfigTool.cxx b/Source/cmLDConfigLDConfigTool.cxx
new file mode 100644
index 0000000..586ea96
--- /dev/null
+++ b/Source/cmLDConfigLDConfigTool.cxx
@@ -0,0 +1,70 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+
+#include "cmLDConfigLDConfigTool.h"
+#include "cmMakefile.h"
+#include "cmRuntimeDependencyArchive.h"
+#include "cmSystemTools.h"
+#include "cmUVProcessChain.h"
+
+#include "cmsys/RegularExpression.hxx"
+
+#include <istream>
+#include <string>
+#include <vector>
+
+cmLDConfigLDConfigTool::cmLDConfigLDConfigTool(
+  cmRuntimeDependencyArchive* archive)
+  : cmLDConfigTool(archive)
+{
+}
+
+bool cmLDConfigLDConfigTool::GetLDConfigPaths(std::vector<std::string>& paths)
+{
+  std::string ldConfigPath =
+    this->Archive->GetMakefile()->GetSafeDefinition("CMAKE_LDCONFIG_COMMAND");
+  if (ldConfigPath.empty()) {
+    ldConfigPath = cmSystemTools::FindProgram(
+      "ldconfig", { "/sbin", "/usr/sbin", "/usr/local/sbin" });
+    if (ldConfigPath.empty()) {
+      this->Archive->SetError("Could not find ldconfig");
+      return false;
+    }
+  }
+
+  std::vector<std::string> ldConfigCommand;
+  cmSystemTools::ExpandListArgument(ldConfigPath, ldConfigCommand);
+  ldConfigCommand.emplace_back("-v");
+  ldConfigCommand.emplace_back("-N"); // Don't rebuild the cache.
+  ldConfigCommand.emplace_back("-X"); // Don't update links.
+
+  cmUVProcessChainBuilder builder;
+  builder.SetBuiltinStream(cmUVProcessChainBuilder::Stream_OUTPUT)
+    .AddCommand(ldConfigCommand);
+  auto process = builder.Start();
+  if (!process.Valid()) {
+    this->Archive->SetError("Failed to start ldconfig process");
+    return false;
+  }
+
+  std::string line;
+  static const cmsys::RegularExpression regex("^([^\t:]*):");
+  while (std::getline(*process.OutputStream(), line)) {
+    cmsys::RegularExpressionMatch match;
+    if (regex.find(line.c_str(), match)) {
+      paths.push_back(match.match(1));
+    }
+  }
+
+  if (!process.Wait()) {
+    this->Archive->SetError("Failed to wait on ldconfig process");
+    return false;
+  }
+  auto status = process.GetStatus();
+  if (!status[0] || status[0]->ExitStatus != 0) {
+    this->Archive->SetError("Failed to run ldconfig");
+    return false;
+  }
+
+  return true;
+}