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| author | Aaron Ballman <aaron@aaronballman.com> | 2017-05-25 21:01:30 +0000 |
|---|---|---|
| committer | Aaron Ballman <aaron@aaronballman.com> | 2017-05-25 21:01:30 +0000 |
| commit | f906b5846ebe481dfc44ce43046ffe2641cf84ba (patch) | |
| tree | b0e82190267f16021779ad783262637cc2e56b90 /CMakeLists.txt | |
| parent | 8f60438bd2fae11c5388a51372e4b6e07da58b1c (diff) | |
Update the documentation and CMake file for Visual Studio generators.
By default, CMake uses a 32-bit toolchain, even when on a 64-bit platform targeting a 64-bit build. However, due to the size of the binaries involved, this can cause linker instabilities (such as the linker running out of memory). Guide people to the correct solution to get CMake to use the native toolchain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303912 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 78e2e016625..a5b96569f9c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -44,6 +44,13 @@ if (NOT PACKAGE_VERSION) "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}") endif() +if ((CMAKE_GENERATOR MATCHES "Visual Studio") AND (CMAKE_GENERATOR_TOOLSET STREQUAL "")) + message(WARNING "Visual Studio generators use the x86 host compiler by " + "default, even for 64-bit targets. This can result in linker " + "instability and out of memory errors. To use the 64-bit " + "host compiler, pass -Thost=x64 on the CMake command line.") +endif() + project(LLVM ${cmake_3_0_PROJ_VERSION} ${cmake_3_0_LANGUAGES} |