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Diffstat (limited to 'cmake/SelectMSVCRuntime.cmake')
| -rw-r--r-- | cmake/SelectMSVCRuntime.cmake | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/cmake/SelectMSVCRuntime.cmake b/cmake/SelectMSVCRuntime.cmake new file mode 100644 index 000000000000..eb7f8f9e954b --- /dev/null +++ b/cmake/SelectMSVCRuntime.cmake @@ -0,0 +1,46 @@ +# ~~~ +# Copyright 2019 Google LLC +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# ~~~ + +# When compiling against *-static vcpkg packages we need to use the static C++ +# runtime with MSVC. The default is to use the dynamic runtime, which does not +# work in this case. This seems to be the recommended way to change the +# runtime: +# +# ~~~ +# https://gitlab.kitware.com/cmake/community/wikis/FAQ#how-can-i-build-my-msvc-application-with-a-static-runtime +# ~~~ +# +# Note that currently we use VCPKG_TARGET_TRIPLET to determine if the static +# runtime is needed. In the future we may need to use a more complex expression +# to determine this, but this is a good start. +# +if (MSVC AND VCPKG_TARGET_TRIPLET MATCHES "-static$") + foreach (flag_var + CMAKE_CXX_FLAGS + CMAKE_CXX_FLAGS_DEBUG + CMAKE_CXX_FLAGS_RELEASE + CMAKE_CXX_FLAGS_MINSIZEREL + CMAKE_CXX_FLAGS_RELWITHDEBINFO) + if (${flag_var} MATCHES "/MD") + string(REGEX + REPLACE "/MD" + "/MT" + ${flag_var} + "${${flag_var}}") + endif () + endforeach (flag_var) + unset(flag_var) +endif () |