Hi all,
I pulled in recent changes to upstream llvm, clang and lldb and it seems
to have tipped my windows build over the edge, and its complaining that
my object files have exceeded the section limit.
This error is raised while building the clang libraries. Has anyone
else seen this problem while doing an x64 build with with Visual Studio
2015?
This problem can be fixed however by specifying /bigobj as a compiler
flag. The problem is however that this needs to be given to clang,
which in turn inherits most of its cmake from llvm.
I have attached my prospective patch for this issue, but wanted to check
in with the lldb folk first to see if anyone has hit this issue, and if
they would have any feedback before I submit it to llvm.
Thanks,
Aidan
--
Aidan Dodds
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diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index d825c58..f097fc3 100644
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -8,6 +8,12 @@ function(llvm_update_compile_flags name)
set(update_src_props ON)
endif()
+ # Visual Studio 2015 builds can hit the object file format section limit.
+ # Building with the /bigobj flag lifts this size restriction.
+ if(MSVC14)
+ list(APPEND LLVM_COMPILE_FLAGS "/bigobj")
+ endif()
+
# LLVM_REQUIRES_EH is an internal flag that individual
# targets can use to force EH
if((LLVM_REQUIRES_EH OR LLVM_ENABLE_EH) AND NOT CLANG_CL)
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