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