Build with RTTI and exceptions disabled. Only in GCC for now.

llvm-svn: 116682

llvm/cmake/modules/LLVMProcessSources.cmake

@@ -36,6 +36,19 @@ function(llvm_process_sources OUT_VAR)
     add_td_sources(sources)
     add_header_files(sources)
   endif()
+
+  # Set common compiler options:
+  if( NOT LLVM_REQUIRES_EH )
+    if( CMAKE_COMPILER_IS_GNUCXX )
+      add_definitions( -fno-exceptions )
+    endif()
+  endif()
+  if( NOT LLVM_REQUIRES_RTTI )
+    if( CMAKE_COMPILER_IS_GNUCXX )
+      add_definitions( -fno-rtti )
+    endif()
+  endif()
+
   set( ${OUT_VAR} ${sources} PARENT_SCOPE )
 endfunction(llvm_process_sources)
 

llvm/examples/ExceptionDemo/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(LLVM_LINK_COMPONENTS jit nativecodegen)
+set(LLVM_REQUIRES_EH 1)
 
 add_llvm_example(ExceptionDemo
   ExceptionDemo.cpp

llvm/examples/Kaleidoscope/Chapter7/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(LLVM_LINK_COMPONENTS core jit interpreter native)
+set(LLVM_REQUIRES_RTTI 1)
 
 add_llvm_example(Kaleidoscope-Ch7
   toy.cpp

llvm/lib/Support/CMakeLists.txt

@@ -1,3 +1,6 @@
+## FIXME: This only requires RTTI because tblgen uses it.  Fix that.
+set(LLVM_REQUIRES_RTTI 1)
+
 add_llvm_library(LLVMSupport
   APFloat.cpp
   APInt.cpp

llvm/lib/System/CMakeLists.txt

@@ -1,3 +1,8 @@
+set(LLVM_REQUIRES_RTTI 1)
+if( MINGW )
+  set(LLVM_REQUIRES_EH 1)
+endif()
+
 add_llvm_library(LLVMSystem
   Alarm.cpp
   Atomic.cpp

llvm/lib/VMCore/CMakeLists.txt

@@ -1,3 +1,5 @@
+set(LLVM_REQUIRES_RTTI 1)
+
 add_llvm_library(LLVMCore
   AsmWriter.cpp
   Attributes.cpp

llvm/utils/TableGen/CMakeLists.txt

@@ -1,3 +1,6 @@
+set(LLVM_REQUIRES_EH 1)
+set(LLVM_REQUIRES_RTTI 1)
+
 add_executable(tblgen
   ARMDecoderEmitter.cpp
   AsmMatcherEmitter.cpp

llvm/utils/unittest/CMakeLists.txt

@@ -24,6 +24,12 @@ if(SUPPORTS_NO_VARIADIC_MACROS_FLAG)
   add_definitions("-Wno-variadic-macros")
 endif()
 
+set(LLVM_REQUIRES_RTTI 1)
+add_definitions( -DGTEST_HAS_RTTI=0 )
+# libstdc++'s TR1 <tuple> header depends on RTTI and uses C++'0x features not
+# supported by Clang, so force googletest to use its own tuple implementation.
+add_definitions( -DGTEST_USE_OWN_TR1_TUPLE )
+
 add_llvm_library(gtest
   googletest/gtest.cc
   googletest/gtest-death-test.cc