[CMake] Allow LLVM to be embedded and built in a subfolder as part of another project.

Patch by Bertrand Bellenot!

Reviewed by Chris Bieneman and me.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272481 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index a40dddfc1c802623e74a2fef23ea2b4be1c83c37..400ce32f835bd29ad155da3c2f4e0f7978f16fcd 100755 (executable)
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -410,12 +410,12 @@ else ()
   set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
 
   # We don't have an ASM parser for all architectures yet.
-  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
+  if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
     set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
   endif ()
 
   # We don't have an disassembler for all architectures yet.
-  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
+  if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
     set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
   endif ()
 endif ()
@@ -526,7 +526,7 @@ else()
   if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
     message(STATUS "Go bindings disabled.")
   else()
-    execute_process(COMMAND ${GO_EXECUTABLE} run ${CMAKE_SOURCE_DIR}/bindings/go/conftest.go
+    execute_process(COMMAND ${GO_EXECUTABLE} run ${PROJECT_SOURCE_DIR}/bindings/go/conftest.go
                     RESULT_VARIABLE GO_CONFTEST)
     if(GO_CONFTEST STREQUAL "0")
       set(LLVM_BINDINGS "${LLVM_BINDINGS} go")