[CMake] don't build libLTO when LLVM_ENABLE_PIC is OFF
When cmake is run with -DLLVM_ENABLE_PIC=OFF, build fails while
linking shared library libLTO.so, because its dependencies are built
with -fno-PIC. More details here: https://llvm.org/bugs/show_bug.cgi?id=26484.
This diff reverts r252652 (git 9fd4377ddb83aee3c049dc8757e7771edbb8ee71),
which removed check NOT LLVM_ENABLE_PIC before disabling build for libLTO.so.
Patch by Igor Sugak!
Differential Revision: http://reviews.llvm.org/D17049
llvm-svn: 260703
diff --git a/llvm/tools/CMakeLists.txt b/llvm/tools/CMakeLists.txt
index 9b89d87..f50382b 100644
--- a/llvm/tools/CMakeLists.txt
+++ b/llvm/tools/CMakeLists.txt
@@ -25,7 +25,7 @@
set(LLVM_TOOL_LLVM_JITLISTENER_BUILD Off)
endif()
-if(CYGWIN)
+if(CYGWIN OR NOT LLVM_ENABLE_PIC)
set(LLVM_TOOL_LTO_BUILD Off)
set(LLVM_TOOL_LLVM_LTO_BUILD Off)
endif()