commit 85ab1e7fe79dcc05d2402c4cfc34f324c9ece65f
author Reid Kleckner <reid@kleckner.net> Wed Mar 18 20:09:13 2015 +0000
committer Reid Kleckner <reid@kleckner.net> Wed Mar 18 20:09:13 2015 +0000
tree da5feeba9deff8f1b482975f1a89044329cd451f
parent 325aa050d595b9a1bbf0123ebfef029598624aee

CMake: Disable ENABLE_EXPORTS for executables with MSVC

The MSVC linker won't produce a .lib file for an executable that doesn't
export anything, and LLVM doesn't maintain dllexport annotations or .def
files listing all C++ symbols. It also doesn't support exporting all
symbols, like binutils ld.

CMake 3.2 changed the Ninja generator to list both the .exe and .lib
files as outputs of executable build targets. Ninja would always re-link
executables with ENABLE_EXPORTS because the .lib output file was not
present, and therefore the target was out of date.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232662 91177308-0d34-0410-b5e6-96231b3b80d8