不同目标中相同文件的不同编译标志 [英] Different compile flags for same file in different targets

问题描述

我想在两个不同的目标中包含一个.cpp文件（在运行CMake后变成两个VS项目）。我想为这些项目设置不同的COMPILE_FLAGS。

I would like to include a .cpp-file in two different targets (becoming two VS projects after running CMake). I would like to set different COMPILE_FLAGS for these projects.

但是，当我做

SET_TARGET_PROPERTIES(myfile.cpp PROPERTIES COMPILE_FLAGS "flags1")
ADD_EXECUTABLE(project1 myfile.cpp)
SET_TARGET_PROPERTIES(myfile.cpp PROPERTIES COMPILE_FLAGS "flags2")
ADD_EXECUTABLE(project2 myfile.cpp)

flags2适用于这两个项目，因此看起来属性被覆盖第3行，不在第2行。这是真的还是我错过了什么？有办法解决这个问题吗？

the "flags2" applies for both projects, so it seems like the properties are overwritten in line 3 and not considered in line 2. Is this true or am I missing something? Is there a way to solve this?

谢谢！

推荐答案

应用 set_target_properties 命令到项目，而不是源文件：

Apply the set_target_properties command to the projects and not to the source files:

add_executable(project1 myfile.cpp)
set_target_properties(project1 PROPERTIES COMPILE_FLAGS "flags1")
add_executable(project2 myfile.cpp)
set_target_properties(project2 PROPERTIES COMPILE_FLAGS "flags2")

目标上设置的标志将应用于目标中的所有源。

The flags set on the target will apply to all sources within the target.

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