From 9d505591b46e8a0f37713266efe9ee7a5dd66f41 Mon Sep 17 00:00:00 2001
From: Ovidiu Panait <ovidiu.panait@windriver.com>
Date: Fri, 31 Jan 2020 10:56:11 +0200
Subject: [PATCH] clang,llvm: cmake: Fix configure for packages using
 find_package()

Currently, when a package (i.e. bcc [https://github.com/iovisor/bcc.git])
that depends on LLVM/Clang tries to run cmake find_package() during
do_configure, it will fail with a similar error:

|   The imported target "llvm-tblgen" references the file
|      ".../recipe-sysroot/usr/bin/llvm-tblgen"
|
|   but this file does not exist.  Possible reasons include:
|   * The file was deleted, renamed, or moved to another location.
|   * An install or uninstall procedure did not complete successfully.
|   * The installation package was faulty and contained
|      ".../recipe-sysroot/usr/lib/cmake/LLVMExports.cmake"
|   but not all the files it references.

This is due to the fact that currently the cmake scripts look for target
binaries in sysroot. Work around this by not exporting the target binaries in
Exports-* cmake files.

Upstream-Status: Innapropriate [oe-specific]

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
---
 clang/cmake/modules/AddClang.cmake | 2 --
 llvm/cmake/modules/AddLLVM.cmake   | 6 ------
 llvm/cmake/modules/TableGen.cmake  | 7 -------
 3 files changed, 15 deletions(-)

diff --git a/clang/cmake/modules/AddClang.cmake b/clang/cmake/modules/AddClang.cmake
index 5752f4277444..f40ea35faf46 100644
--- a/clang/cmake/modules/AddClang.cmake
+++ b/clang/cmake/modules/AddClang.cmake
@@ -158,7 +158,6 @@ macro(add_clang_tool name)
   if (CLANG_BUILD_TOOLS)
     get_target_export_arg(${name} Clang export_to_clangtargets)
     install(TARGETS ${name}
-      ${export_to_clangtargets}
       RUNTIME DESTINATION bin
       COMPONENT ${name})
 
@@ -167,7 +166,6 @@ macro(add_clang_tool name)
                                DEPENDS ${name}
                                COMPONENT ${name})
     endif()
-    set_property(GLOBAL APPEND PROPERTY CLANG_EXPORTS ${name})
   endif()
 endmacro()
 
diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
index 3e009f5061d3..1d40ad3e7ecc 100644
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -1232,7 +1232,6 @@ macro(add_llvm_tool name)
     if( LLVM_BUILD_TOOLS )
       get_target_export_arg(${name} LLVM export_to_llvmexports)
       install(TARGETS ${name}
-              ${export_to_llvmexports}
               RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}
               COMPONENT ${name})
 
@@ -1243,9 +1242,6 @@ macro(add_llvm_tool name)
       endif()
     endif()
   endif()
-  if( LLVM_BUILD_TOOLS )
-    set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
-  endif()
   set_target_properties(${name} PROPERTIES FOLDER "Tools")
 endmacro(add_llvm_tool name)
 
@@ -1285,7 +1281,6 @@ macro(add_llvm_utility name)
     if (LLVM_INSTALL_UTILS AND LLVM_BUILD_UTILS)
       get_target_export_arg(${name} LLVM export_to_llvmexports)
       install(TARGETS ${name}
-              ${export_to_llvmexports}
               RUNTIME DESTINATION ${LLVM_UTILS_INSTALL_DIR}
               COMPONENT ${name})
 
@@ -1294,7 +1289,6 @@ macro(add_llvm_utility name)
                                  DEPENDS ${name}
                                  COMPONENT ${name})
       endif()
-      set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
     elseif(LLVM_BUILD_UTILS)
       set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS_BUILDTREE_ONLY ${name})
     endif()
diff --git a/llvm/cmake/modules/TableGen.cmake b/llvm/cmake/modules/TableGen.cmake
index 5e9e2674405e..3c72df35b308 100644
--- a/llvm/cmake/modules/TableGen.cmake
+++ b/llvm/cmake/modules/TableGen.cmake
@@ -179,14 +179,8 @@ macro(add_tablegen target project)
   endif()
 
   if ((${project} STREQUAL LLVM OR ${project} STREQUAL MLIR) AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY AND LLVM_BUILD_UTILS)
-    set(export_to_llvmexports)
-    if(${target} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
-        NOT LLVM_DISTRIBUTION_COMPONENTS)
-      set(export_to_llvmexports EXPORT LLVMExports)
-    endif()
 
     install(TARGETS ${target}
-            ${export_to_llvmexports}
             COMPONENT ${target}
             RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR})
     if(NOT LLVM_ENABLE_IDE)
@@ -195,5 +189,4 @@ macro(add_tablegen target project)
                                COMPONENT ${target})
     endif()
   endif()
-  set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target})
 endmacro()