1 files changed, 115 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-core/llvm/llvm/0002-llvm-allow-env-override-of-exe-path.patch b/meta-amd-bsp/recipes-core/llvm/llvm/0002-llvm-allow-env-override-of-exe-path.patch
new file mode 100644
index 00000000..774947ae
--- /dev/null
+++ b/meta-amd-bsp/recipes-core/llvm/llvm/0002-llvm-allow-env-override-of-exe-path.patch
@@ -0,0 +1,115 @@
+From 0570fe02c07244a8724c1e6c0437f893c8aa8e93 Mon Sep 17 00:00:00 2001
+From: Martin Kelly <mkelly@xevo.com>
+Date: Fri, 19 May 2017 00:22:57 -0700
+Subject: [PATCH 2/2] llvm: allow env override of exe path
+
+When using a native llvm-config from inside a sysroot, we need llvm-config to
+return the libraries, include directories, etc. from inside the sysroot rather
+than from the native sysroot. Thus provide an env override for calling
+llvm-config from a target sysroot.
+
+To let it work in multilib environment, we need to provide a knob to supply
+multilib dirname as well
+
+Upstream-Status: Inappropriate [OE-Specific]
+
+Signed-off-by: Martin Kelly <mkelly@xevo.com>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Arsalan H. Awan <Arsalan_Awan@mentor.com>
+---
+ tools/llvm-config/llvm-config.cpp | 35 ++++++++++++++++++++++---------
+ 1 file changed, 25 insertions(+), 10 deletions(-)
+
+diff --git a/tools/llvm-config/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
+index bec89fef98c..91b4d6e4c43 100644
+--- a/tools/llvm-config/llvm-config.cpp
++++ b/tools/llvm-config/llvm-config.cpp
+@@ -226,6 +226,13 @@ Typical components:\n\
+ 
+ /// Compute the path to the main executable.
+ std::string GetExecutablePath(const char *Argv0) {
++  // Hack for Yocto: we need to override the root path when we are using
++  // llvm-config from within a target sysroot.
++  const char *Sysroot = std::getenv("YOCTO_ALTERNATE_EXE_PATH");
++  if (Sysroot != nullptr) {
++    return Sysroot;
++  }
++
+   // This just needs to be some symbol in the binary; C++ doesn't
+   // allow taking the address of ::main however.
+   void *P = (void *)(intptr_t)GetExecutablePath;
+@@ -284,7 +291,7 @@ int main(int argc, char **argv) {
+   // bin dir).
+   sys::fs::make_absolute(CurrentPath);
+   CurrentExecPrefix =
+-      sys::path::parent_path(sys::path::parent_path(CurrentPath)).str();
++      sys::path::parent_path(sys::path::parent_path(sys::path::parent_path(CurrentPath))).str();
+ 
+   // Check to see if we are inside a development tree by comparing to possible
+   // locations (prefix style or CMake style).
+@@ -293,7 +300,7 @@ int main(int argc, char **argv) {
+     DevelopmentTreeLayout = CMakeStyle;
+     ActiveObjRoot = LLVM_OBJ_ROOT;
+   } else if (sys::fs::equivalent(CurrentExecPrefix,
+-                                 Twine(LLVM_OBJ_ROOT) + "/bin")) {
++                                 Twine(LLVM_OBJ_ROOT) + "/bin/llvm9.0.0")) {
+     IsInDevelopmentTree = true;
+     DevelopmentTreeLayout = CMakeBuildModeStyle;
+     ActiveObjRoot = LLVM_OBJ_ROOT;
+@@ -307,37 +314,45 @@ int main(int argc, char **argv) {
+   std::string ActivePrefix, ActiveBinDir, ActiveIncludeDir, ActiveLibDir,
+               ActiveCMakeDir;
+   std::string ActiveIncludeOption;
++  // Hack for Yocto: we need to override the multilib path when we are using
++  // llvm-config from within a target sysroot.
++  std::string Multilibdir = std::getenv("YOCTO_ALTERNATE_MULTILIB_NAME");
++  if (Multilibdir.empty()) {
++    Multilibdir = "/lib/llvm9.0.0" LLVM_LIBDIR_SUFFIX;
++  }
++
+   if (IsInDevelopmentTree) {
+-    ActiveIncludeDir = std::string(LLVM_SRC_ROOT) + "/include";
++    ActiveIncludeDir = std::string(LLVM_SRC_ROOT) + "/include/llvm9.0.0";
+     ActivePrefix = CurrentExecPrefix;
+ 
+     // CMake organizes the products differently than a normal prefix style
+     // layout.
++
+     switch (DevelopmentTreeLayout) {
+     case CMakeStyle:
+-      ActiveBinDir = ActiveObjRoot + "/bin";
+-      ActiveLibDir = ActiveObjRoot + "/lib" + LLVM_LIBDIR_SUFFIX;
++      ActiveBinDir = ActiveObjRoot + "/bin/llvm9.0.0";
++      ActiveLibDir = ActiveObjRoot + "/lib/llvm9.0.0" + LLVM_LIBDIR_SUFFIX;
+       ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
+       break;
+     case CMakeBuildModeStyle:
+       ActivePrefix = ActiveObjRoot;
+-      ActiveBinDir = ActiveObjRoot + "/bin/" + build_mode;
++      ActiveBinDir = ActiveObjRoot + "/bin/llvm9.0.0/" + build_mode;
+       ActiveLibDir =
+-          ActiveObjRoot + "/lib" + LLVM_LIBDIR_SUFFIX + "/" + build_mode;
++          ActiveObjRoot + "/lib/llvm9.0.0" + LLVM_LIBDIR_SUFFIX + "/" + build_mode;
+       ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
+       break;
+     }
+ 
+     // We need to include files from both the source and object trees.
+     ActiveIncludeOption =
+-        ("-I" + ActiveIncludeDir + " " + "-I" + ActiveObjRoot + "/include");
++        ("-I" + ActiveIncludeDir + " " + "-I" + ActiveObjRoot + "/include/llvm9.0.0");
+   } else {
+     ActivePrefix = CurrentExecPrefix;
+-    ActiveIncludeDir = ActivePrefix + "/include";
++    ActiveIncludeDir = ActivePrefix + "/include/llvm9.0.0";
+     SmallString<256> path(StringRef(LLVM_TOOLS_INSTALL_DIR));
+     sys::fs::make_absolute(ActivePrefix, path);
+     ActiveBinDir = path.str();
+-    ActiveLibDir = ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX;
++    ActiveLibDir = ActivePrefix + Multilibdir;
+     ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
+     ActiveIncludeOption = "-I" + ActiveIncludeDir;
+   }
+-- 
+2.20.1
+