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Win32, MSVC: Enable Multi-processor Compilation (/MP) with Visual Studio 

Makes compiling from the Visual Studio IDE much faster when using the
solution and projects generated by cmake.

For the externals I hijack the `disable_warnings` function.
pull/1273/head
ruevs 2022-07-09 00:11:24 +03:00 committed by Ryan A. Pavlik
parent ce6c4ddeb5
commit bc4244e099
2 changed files with 6 additions and 2 deletions
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4
CMakeLists.txt
View File

@ -377,6 +377,10 @@ if(MSVC)
# Same for the (C99) __func__ special variable; we use it only in C++ code. # Same for the (C99) __func__ special variable; we use it only in C++ code.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /D__func__=__FUNCTION__") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /D__func__=__FUNCTION__")
# Multi-processor Compilation
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
# We rely on these /we flags. They correspond to the GNU-style flags below as # We rely on these /we flags. They correspond to the GNU-style flags below as
# follows: /w4062=-Wswitch # follows: /w4062=-Wswitch
set(WARNING_FLAGS "${WARNING_FLAGS} /we4062") set(WARNING_FLAGS "${WARNING_FLAGS} /we4062")

4
cmake/DisableWarnings.cmake
View File

@ -4,12 +4,12 @@ function(disable_warnings)
if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang") if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w" PARENT_SCOPE) set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w" PARENT_SCOPE)
elseif(CMAKE_C_COMPILER_ID STREQUAL "MSVC") elseif(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W0" PARENT_SCOPE) set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W0 /MP" PARENT_SCOPE)
endif() endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang") if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w" PARENT_SCOPE) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w" PARENT_SCOPE)
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W0" PARENT_SCOPE) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W0 /MP" PARENT_SCOPE)
endif() endif()
endfunction() endfunction()